Line data Source code
1 : /*
2 : Unix SMB/Netbios implementation.
3 : SMB client library implementation
4 : Copyright (C) Andrew Tridgell 1998
5 : Copyright (C) Richard Sharpe 2000, 2002
6 : Copyright (C) John Terpstra 2000
7 : Copyright (C) Tom Jansen (Ninja ISD) 2002
8 : Copyright (C) Derrell Lipman 2003-2008
9 : Copyright (C) Jeremy Allison 2007, 2008
10 :
11 : This program is free software; you can redistribute it and/or modify
12 : it under the terms of the GNU General Public License as published by
13 : the Free Software Foundation; either version 3 of the License, or
14 : (at your option) any later version.
15 :
16 : This program is distributed in the hope that it will be useful,
17 : but WITHOUT ANY WARRANTY; without even the implied warranty of
18 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 : GNU General Public License for more details.
20 :
21 : You should have received a copy of the GNU General Public License
22 : along with this program. If not, see <http://www.gnu.org/licenses/>.
23 : */
24 :
25 : #include "includes.h"
26 : #include "libsmb/libsmb.h"
27 : #include "libsmbclient.h"
28 : #include "libsmb_internal.h"
29 : #include "../libcli/smb/smbXcli_base.h"
30 :
31 : /*
32 : * Routine to open() a file ...
33 : */
34 :
35 : SMBCFILE *
36 0 : SMBC_open_ctx(SMBCCTX *context,
37 : const char *fname,
38 : int flags,
39 : mode_t mode)
40 : {
41 0 : char *server = NULL;
42 0 : char *share = NULL;
43 0 : char *user = NULL;
44 0 : char *password = NULL;
45 0 : char *workgroup = NULL;
46 0 : char *path = NULL;
47 0 : char *targetpath = NULL;
48 0 : struct cli_state *targetcli = NULL;
49 0 : SMBCSRV *srv = NULL;
50 0 : SMBCFILE *file = NULL;
51 : uint16_t fd;
52 0 : uint16_t port = 0;
53 0 : NTSTATUS status = NT_STATUS_OBJECT_PATH_INVALID;
54 0 : TALLOC_CTX *frame = talloc_stackframe();
55 :
56 0 : if (!context || !context->internal->initialized) {
57 0 : errno = EINVAL; /* Best I can think of ... */
58 0 : TALLOC_FREE(frame);
59 0 : return NULL;
60 : }
61 :
62 0 : if (!fname) {
63 0 : errno = EINVAL;
64 0 : TALLOC_FREE(frame);
65 0 : return NULL;
66 : }
67 :
68 0 : if (SMBC_parse_path(frame,
69 : context,
70 : fname,
71 : &workgroup,
72 : &server,
73 : &port,
74 : &share,
75 : &path,
76 : &user,
77 : &password,
78 : NULL)) {
79 0 : errno = EINVAL;
80 0 : TALLOC_FREE(frame);
81 0 : return NULL;
82 : }
83 :
84 0 : if (!user || user[0] == (char)0) {
85 0 : user = talloc_strdup(frame, smbc_getUser(context));
86 0 : if (!user) {
87 0 : errno = ENOMEM;
88 0 : TALLOC_FREE(frame);
89 0 : return NULL;
90 : }
91 : }
92 :
93 0 : srv = SMBC_server(frame, context, True,
94 : server, port, share, &workgroup, &user, &password);
95 0 : if (!srv) {
96 0 : if (errno == EPERM) errno = EACCES;
97 0 : TALLOC_FREE(frame);
98 0 : return NULL; /* SMBC_server sets errno */
99 : }
100 :
101 : /* Hmmm, the test for a directory is suspect here ... FIXME */
102 :
103 0 : if (strlen(path) > 0 && path[strlen(path) - 1] == '\\') {
104 0 : status = NT_STATUS_OBJECT_PATH_INVALID;
105 : } else {
106 0 : struct cli_credentials *creds = NULL;
107 :
108 0 : file = SMB_MALLOC_P(SMBCFILE);
109 0 : if (!file) {
110 0 : errno = ENOMEM;
111 0 : TALLOC_FREE(frame);
112 0 : return NULL;
113 : }
114 :
115 0 : ZERO_STRUCTP(file);
116 :
117 0 : creds = context->internal->creds;
118 : /*d_printf(">>>open: resolving %s\n", path);*/
119 0 : status = cli_resolve_path(
120 : frame, "",
121 : creds,
122 : srv->cli, path, &targetcli, &targetpath);
123 0 : if (!NT_STATUS_IS_OK(status)) {
124 0 : d_printf("Could not resolve %s\n", path);
125 0 : errno = ENOENT;
126 0 : SAFE_FREE(file);
127 0 : TALLOC_FREE(frame);
128 0 : return NULL;
129 : }
130 : /*d_printf(">>>open: resolved %s as %s\n", path, targetpath);*/
131 :
132 0 : status = cli_open(targetcli, targetpath, flags,
133 0 : context->internal->share_mode, &fd);
134 0 : if (!NT_STATUS_IS_OK(status)) {
135 :
136 : /* Handle the error ... */
137 :
138 0 : SAFE_FREE(file);
139 0 : TALLOC_FREE(frame);
140 0 : errno = cli_status_to_errno(status);
141 0 : return NULL;
142 : }
143 :
144 : /* Fill in file struct */
145 :
146 0 : file->cli_fd = fd;
147 0 : file->fname = SMB_STRDUP(fname);
148 0 : file->srv = srv;
149 0 : file->offset = 0;
150 0 : file->file = True;
151 : /*
152 : * targetcli is either equal to srv->cli or
153 : * is a subsidiary DFS connection. Either way
154 : * file->cli_fd belongs to it so we must cache
155 : * it for read/write/close, not re-resolve each time.
156 : * Re-resolving is both slow and incorrect.
157 : */
158 0 : file->targetcli = targetcli;
159 :
160 0 : DLIST_ADD(context->internal->files, file);
161 :
162 : /*
163 : * If the file was opened in O_APPEND mode, all write
164 : * operations should be appended to the file. To do that,
165 : * though, using this protocol, would require a getattrE()
166 : * call for each and every write, to determine where the end
167 : * of the file is. (There does not appear to be an append flag
168 : * in the protocol.) Rather than add all of that overhead of
169 : * retrieving the current end-of-file offset prior to each
170 : * write operation, we'll assume that most append operations
171 : * will continuously write, so we'll just set the offset to
172 : * the end of the file now and hope that's adequate.
173 : *
174 : * Note to self: If this proves inadequate, and O_APPEND
175 : * should, in some cases, be forced for each write, add a
176 : * field in the context options structure, for
177 : * "strict_append_mode" which would select between the current
178 : * behavior (if FALSE) or issuing a getattrE() prior to each
179 : * write and forcing the write to the end of the file (if
180 : * TRUE). Adding that capability will likely require adding
181 : * an "append" flag into the _SMBCFILE structure to track
182 : * whether a file was opened in O_APPEND mode. -- djl
183 : */
184 0 : if (flags & O_APPEND) {
185 0 : if (SMBC_lseek_ctx(context, file, 0, SEEK_END) < 0) {
186 0 : (void) SMBC_close_ctx(context, file);
187 0 : errno = ENXIO;
188 0 : TALLOC_FREE(frame);
189 0 : return NULL;
190 : }
191 : }
192 :
193 0 : TALLOC_FREE(frame);
194 0 : return file;
195 : }
196 :
197 : /* Check if opendir needed ... */
198 :
199 0 : if (!NT_STATUS_IS_OK(status)) {
200 0 : file = smbc_getFunctionOpendir(context)(context, fname);
201 0 : TALLOC_FREE(frame);
202 0 : if (file == NULL) {
203 0 : errno = cli_status_to_errno(status);
204 : }
205 0 : return file;
206 : }
207 :
208 0 : errno = EINVAL; /* FIXME, correct errno ? */
209 0 : TALLOC_FREE(frame);
210 0 : return NULL;
211 : }
212 :
213 : /*
214 : * Routine to create a file
215 : */
216 :
217 : SMBCFILE *
218 0 : SMBC_creat_ctx(SMBCCTX *context,
219 : const char *path,
220 : mode_t mode)
221 : {
222 0 : if (!context || !context->internal->initialized) {
223 0 : errno = EINVAL;
224 0 : return NULL;
225 : }
226 :
227 0 : return SMBC_open_ctx(context, path,
228 : O_WRONLY | O_CREAT | O_TRUNC, mode);
229 : }
230 :
231 : /*
232 : * Routine to read() a file ...
233 : */
234 :
235 : ssize_t
236 0 : SMBC_read_ctx(SMBCCTX *context,
237 : SMBCFILE *file,
238 : void *buf,
239 : size_t count)
240 : {
241 : size_t ret;
242 0 : TALLOC_CTX *frame = talloc_stackframe();
243 : NTSTATUS status;
244 :
245 : /*
246 : * offset:
247 : *
248 : * Compiler bug (possibly) -- gcc (GCC) 3.3.5 (Debian 1:3.3.5-2) --
249 : * appears to pass file->offset (which is type off_t) differently than
250 : * a local variable of type off_t. Using local variable "offset" in
251 : * the call to cli_read() instead of file->offset fixes a problem
252 : * retrieving data at an offset greater than 4GB.
253 : */
254 : off_t offset;
255 :
256 0 : if (!context || !context->internal->initialized) {
257 0 : errno = EINVAL;
258 0 : TALLOC_FREE(frame);
259 0 : return -1;
260 : }
261 :
262 0 : DEBUG(4, ("smbc_read(%p, %zu)\n", file, count));
263 :
264 0 : if (!SMBC_dlist_contains(context->internal->files, file)) {
265 0 : errno = EBADF;
266 0 : TALLOC_FREE(frame);
267 0 : return -1;
268 : }
269 :
270 0 : offset = file->offset;
271 :
272 : /* Check that the buffer exists ... */
273 :
274 0 : if (buf == NULL) {
275 0 : errno = EINVAL;
276 0 : TALLOC_FREE(frame);
277 0 : return -1;
278 : }
279 :
280 0 : status = cli_read(file->targetcli, file->cli_fd, (char *)buf, offset,
281 : count, &ret);
282 0 : if (!NT_STATUS_IS_OK(status)) {
283 0 : TALLOC_FREE(frame);
284 0 : errno = cli_status_to_errno(status);
285 0 : return -1;
286 : }
287 :
288 0 : file->offset += ret;
289 :
290 0 : DEBUG(4, (" --> %zu\n", ret));
291 :
292 0 : TALLOC_FREE(frame);
293 0 : return ret; /* Success, ret bytes of data ... */
294 : }
295 :
296 : off_t
297 0 : SMBC_splice_ctx(SMBCCTX *context,
298 : SMBCFILE *srcfile,
299 : SMBCFILE *dstfile,
300 : off_t count,
301 : int (*splice_cb)(off_t n, void *priv),
302 : void *priv)
303 : {
304 0 : off_t written = 0;
305 0 : TALLOC_CTX *frame = talloc_stackframe();
306 : NTSTATUS status;
307 :
308 0 : if (!context || !context->internal->initialized) {
309 0 : errno = EINVAL;
310 0 : TALLOC_FREE(frame);
311 0 : return -1;
312 : }
313 :
314 0 : if (!SMBC_dlist_contains(context->internal->files, srcfile)) {
315 0 : errno = EBADF;
316 0 : TALLOC_FREE(frame);
317 0 : return -1;
318 : }
319 :
320 0 : if (!SMBC_dlist_contains(context->internal->files, dstfile)) {
321 0 : errno = EBADF;
322 0 : TALLOC_FREE(frame);
323 0 : return -1;
324 : }
325 :
326 0 : status = cli_splice(srcfile->targetcli, dstfile->targetcli,
327 0 : srcfile->cli_fd, dstfile->cli_fd,
328 : count, srcfile->offset, dstfile->offset, &written,
329 : splice_cb, priv);
330 0 : if (!NT_STATUS_IS_OK(status)) {
331 0 : TALLOC_FREE(frame);
332 0 : errno = cli_status_to_errno(status);
333 0 : return -1;
334 : }
335 :
336 0 : srcfile->offset += written;
337 0 : dstfile->offset += written;
338 :
339 0 : TALLOC_FREE(frame);
340 0 : return written;
341 : }
342 :
343 : /*
344 : * Routine to write() a file ...
345 : */
346 :
347 : ssize_t
348 0 : SMBC_write_ctx(SMBCCTX *context,
349 : SMBCFILE *file,
350 : const void *buf,
351 : size_t count)
352 : {
353 : off_t offset;
354 0 : TALLOC_CTX *frame = talloc_stackframe();
355 : NTSTATUS status;
356 :
357 : /* First check all pointers before dereferencing them */
358 :
359 0 : if (!context || !context->internal->initialized) {
360 0 : errno = EINVAL;
361 0 : TALLOC_FREE(frame);
362 0 : return -1;
363 : }
364 :
365 0 : if (!SMBC_dlist_contains(context->internal->files, file)) {
366 0 : errno = EBADF;
367 0 : TALLOC_FREE(frame);
368 0 : return -1;
369 : }
370 :
371 : /* Check that the buffer exists ... */
372 :
373 0 : if (buf == NULL) {
374 0 : errno = EINVAL;
375 0 : TALLOC_FREE(frame);
376 0 : return -1;
377 : }
378 :
379 0 : offset = file->offset; /* See "offset" comment in SMBC_read_ctx() */
380 :
381 0 : status = cli_writeall(file->targetcli, file->cli_fd,
382 : 0, (const uint8_t *)buf, offset, count, NULL);
383 0 : if (!NT_STATUS_IS_OK(status)) {
384 0 : errno = map_errno_from_nt_status(status);
385 0 : TALLOC_FREE(frame);
386 0 : return -1;
387 : }
388 :
389 0 : file->offset += count;
390 :
391 0 : TALLOC_FREE(frame);
392 0 : return count; /* Success, 0 bytes of data ... */
393 : }
394 :
395 : /*
396 : * Routine to close() a file ...
397 : */
398 :
399 : int
400 0 : SMBC_close_ctx(SMBCCTX *context,
401 : SMBCFILE *file)
402 : {
403 0 : TALLOC_CTX *frame = talloc_stackframe();
404 : NTSTATUS status;
405 :
406 0 : if (!context || !context->internal->initialized) {
407 0 : errno = EINVAL;
408 0 : TALLOC_FREE(frame);
409 0 : return -1;
410 : }
411 :
412 0 : if (!SMBC_dlist_contains(context->internal->files, file)) {
413 0 : errno = EBADF;
414 0 : TALLOC_FREE(frame);
415 0 : return -1;
416 : }
417 :
418 : /* IS a dir ... */
419 0 : if (!file->file) {
420 0 : TALLOC_FREE(frame);
421 0 : return smbc_getFunctionClosedir(context)(context, file);
422 : }
423 :
424 0 : status = cli_close(file->targetcli, file->cli_fd);
425 0 : if (!NT_STATUS_IS_OK(status)) {
426 : SMBCSRV *srv;
427 0 : DEBUG(3, ("cli_close failed on %s. purging server.\n",
428 : file->fname));
429 : /* Deallocate slot and remove the server
430 : * from the server cache if unused */
431 0 : srv = file->srv;
432 0 : DLIST_REMOVE(context->internal->files, file);
433 0 : SAFE_FREE(file->fname);
434 0 : SAFE_FREE(file);
435 0 : smbc_getFunctionRemoveUnusedServer(context)(context, srv);
436 0 : TALLOC_FREE(frame);
437 0 : errno = cli_status_to_errno(status);
438 0 : return -1;
439 : }
440 :
441 0 : DLIST_REMOVE(context->internal->files, file);
442 0 : SAFE_FREE(file->fname);
443 0 : SAFE_FREE(file);
444 0 : TALLOC_FREE(frame);
445 0 : return 0;
446 : }
447 :
448 : /*
449 : * Get info from an SMB server on a file. Use a qpathinfo call first
450 : * and if that fails, use getatr, as Win95 sometimes refuses qpathinfo
451 : */
452 : NTSTATUS
453 0 : SMBC_getatr(SMBCCTX * context,
454 : SMBCSRV *srv,
455 : const char *path,
456 : struct stat *sb)
457 : {
458 0 : char *fixedpath = NULL;
459 0 : char *targetpath = NULL;
460 0 : struct cli_state *targetcli = NULL;
461 0 : uint32_t attr = 0;
462 0 : off_t size = 0;
463 0 : struct timespec create_time_ts = {0};
464 0 : struct timespec access_time_ts = {0};
465 0 : struct timespec write_time_ts = {0};
466 0 : struct timespec change_time_ts = {0};
467 0 : struct timespec w_time_ts = {0};
468 0 : time_t write_time = 0;
469 0 : SMB_INO_T ino = 0;
470 0 : struct cli_credentials *creds = NULL;
471 0 : TALLOC_CTX *frame = talloc_stackframe();
472 : NTSTATUS status;
473 :
474 0 : if (!context || !context->internal->initialized) {
475 0 : TALLOC_FREE(frame);
476 0 : return NT_STATUS_INVALID_PARAMETER;
477 : }
478 :
479 : /* path fixup for . and .. */
480 0 : if (ISDOT(path) || ISDOTDOT(path)) {
481 0 : fixedpath = talloc_strdup(frame, "\\");
482 0 : if (!fixedpath) {
483 0 : TALLOC_FREE(frame);
484 0 : return NT_STATUS_NO_MEMORY;
485 : }
486 : } else {
487 0 : fixedpath = talloc_strdup(frame, path);
488 0 : if (!fixedpath) {
489 0 : TALLOC_FREE(frame);
490 0 : return NT_STATUS_NO_MEMORY;
491 : }
492 0 : trim_string(fixedpath, NULL, "\\..");
493 0 : trim_string(fixedpath, NULL, "\\.");
494 : }
495 0 : DEBUG(4,("SMBC_getatr: sending qpathinfo\n"));
496 :
497 0 : creds = context->internal->creds;
498 :
499 0 : status = cli_resolve_path(frame, "",
500 : creds,
501 : srv->cli, fixedpath,
502 : &targetcli, &targetpath);
503 0 : if (!NT_STATUS_IS_OK(status)) {
504 0 : d_printf("Couldn't resolve %s\n", path);
505 0 : TALLOC_FREE(frame);
506 0 : return NT_STATUS_OBJECT_NAME_NOT_FOUND;
507 : }
508 :
509 0 : if (!srv->no_pathinfo2) {
510 0 : bool not_supported_error = false;
511 0 : status = cli_qpathinfo2(targetcli,
512 : targetpath,
513 : &create_time_ts,
514 : &access_time_ts,
515 : &write_time_ts,
516 : &change_time_ts,
517 : &size,
518 : &attr,
519 : &ino);
520 0 : if (NT_STATUS_IS_OK(status)) {
521 0 : goto setup_stat;
522 : }
523 0 : if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL) ||
524 0 : NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
525 0 : not_supported_error = true;
526 : }
527 0 : if (!not_supported_error) {
528 : /* "Normal error". Just return it to caller. */
529 0 : TALLOC_FREE(frame);
530 0 : return status;
531 : }
532 : }
533 :
534 0 : srv->no_pathinfo2 = True;
535 :
536 0 : if (!srv->no_pathinfo3) {
537 0 : bool not_supported_error = false;
538 0 : status = cli_qpathinfo3(targetcli,
539 : targetpath,
540 : &create_time_ts,
541 : &access_time_ts,
542 : &write_time_ts,
543 : &change_time_ts,
544 : &size,
545 : &attr,
546 : &ino);
547 0 : if (NT_STATUS_IS_OK(status)) {
548 0 : goto setup_stat;
549 : }
550 0 : if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL) ||
551 0 : NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
552 0 : not_supported_error = true;
553 : }
554 0 : if (!not_supported_error) {
555 : /* "Normal error". Just return it to caller. */
556 0 : TALLOC_FREE(frame);
557 0 : return status;
558 : }
559 : }
560 :
561 0 : srv->no_pathinfo3 = True;
562 :
563 : /* if this is NT then don't bother with the getatr */
564 0 : if (smb1cli_conn_capabilities(targetcli->conn) & CAP_NT_SMBS) {
565 0 : goto all_failed;
566 : }
567 :
568 0 : status = cli_getatr(targetcli, targetpath, &attr, &size, &write_time);
569 0 : if (!NT_STATUS_IS_OK(status)) {
570 0 : goto all_failed;
571 : }
572 0 : w_time_ts = convert_time_t_to_timespec(write_time);
573 0 : access_time_ts = change_time_ts = write_time_ts = w_time_ts;
574 :
575 0 : setup_stat:
576 0 : setup_stat(sb,
577 : path,
578 : size,
579 : attr,
580 : ino,
581 : srv->dev,
582 : access_time_ts,
583 : change_time_ts,
584 : write_time_ts);
585 :
586 0 : TALLOC_FREE(frame);
587 0 : return NT_STATUS_OK;
588 :
589 0 : all_failed:
590 0 : srv->no_pathinfo2 = False;
591 0 : srv->no_pathinfo3 = False;
592 :
593 0 : TALLOC_FREE(frame);
594 0 : return status;
595 : }
596 :
597 : /*
598 : * Set file info on an SMB server. Use setpathinfo call first. If that
599 : * fails, use setattrE..
600 : *
601 : * Access and modification time parameters are always used and must be
602 : * provided. Create time, if zero, will be determined from the actual create
603 : * time of the file. If non-zero, the create time will be set as well.
604 : *
605 : * "attr" (attributes) parameter may be set to -1 if it is not to be set.
606 : */
607 : bool
608 0 : SMBC_setatr(SMBCCTX * context, SMBCSRV *srv, char *path,
609 : struct timespec create_time,
610 : struct timespec access_time,
611 : struct timespec write_time,
612 : struct timespec change_time,
613 : uint16_t attr)
614 : {
615 : uint16_t fd;
616 0 : uint32_t lattr = (uint32_t)attr;
617 : NTSTATUS status;
618 0 : TALLOC_CTX *frame = talloc_stackframe();
619 :
620 0 : if (attr == (uint16_t)-1) {
621 : /*
622 : * External ABI only passes in
623 : * 16-bits of attribute. Make
624 : * sure we correctly map to
625 : * (uint32_t)-1 meaning don't
626 : * change attributes if attr was
627 : * passed in as 16-bit -1.
628 : */
629 0 : lattr = (uint32_t)-1;
630 : }
631 :
632 :
633 : /*
634 : * First, try setpathinfo (if qpathinfo succeeded), for it is the
635 : * modern function for "new code" to be using, and it works given a
636 : * filename rather than requiring that the file be opened to have its
637 : * attributes manipulated.
638 : */
639 0 : if (srv->no_pathinfo ||
640 0 : !NT_STATUS_IS_OK(cli_setpathinfo_ext(srv->cli, path,
641 : create_time,
642 : access_time,
643 : write_time,
644 : change_time,
645 : lattr))) {
646 :
647 : /*
648 : * setpathinfo is not supported; go to plan B.
649 : *
650 : * cli_setatr() does not work on win98, and it also doesn't
651 : * support setting the access time (only the modification
652 : * time), so in all cases, we open the specified file and use
653 : * cli_setattrE() which should work on all OS versions, and
654 : * supports both times.
655 : */
656 :
657 : /* Don't try {q,set}pathinfo() again, with this server */
658 0 : srv->no_pathinfo = True;
659 :
660 : /* Open the file */
661 0 : status = cli_open(srv->cli, path, O_RDWR, DENY_NONE, &fd);
662 0 : if (!NT_STATUS_IS_OK(status)) {
663 0 : TALLOC_FREE(frame);
664 0 : errno = cli_status_to_errno(status);
665 0 : return False;
666 : }
667 :
668 : /* Set the new attributes */
669 0 : status = cli_setattrE(
670 : srv->cli,
671 : fd,
672 : change_time.tv_sec,
673 : access_time.tv_sec,
674 : write_time.tv_sec);
675 :
676 : /* Close the file */
677 0 : cli_close(srv->cli, fd);
678 :
679 : /*
680 : * Unfortunately, setattrE() doesn't have a provision for
681 : * setting the access attr (attributes). We'll have to try
682 : * cli_setatr() for that, and with only this parameter, it
683 : * seems to work on win98.
684 : */
685 0 : if (NT_STATUS_IS_OK(status) && attr != (uint16_t) -1) {
686 0 : status = cli_setatr(srv->cli, path, (uint32_t)attr, 0);
687 : }
688 :
689 0 : if (!NT_STATUS_IS_OK(status)) {
690 0 : TALLOC_FREE(frame);
691 0 : errno = cli_status_to_errno(status);
692 0 : return False;
693 : }
694 : }
695 :
696 0 : TALLOC_FREE(frame);
697 0 : return True;
698 : }
699 :
700 : /*
701 : * A routine to lseek() a file
702 : */
703 :
704 : off_t
705 0 : SMBC_lseek_ctx(SMBCCTX *context,
706 : SMBCFILE *file,
707 : off_t offset,
708 : int whence)
709 : {
710 : off_t size;
711 0 : TALLOC_CTX *frame = talloc_stackframe();
712 :
713 0 : if (!context || !context->internal->initialized) {
714 0 : errno = EINVAL;
715 0 : TALLOC_FREE(frame);
716 0 : return -1;
717 : }
718 :
719 0 : if (!SMBC_dlist_contains(context->internal->files, file)) {
720 0 : errno = EBADF;
721 0 : TALLOC_FREE(frame);
722 0 : return -1;
723 : }
724 :
725 0 : if (!file->file) {
726 0 : errno = EINVAL;
727 0 : TALLOC_FREE(frame);
728 0 : return -1; /* Can't lseek a dir ... */
729 : }
730 :
731 0 : switch (whence) {
732 0 : case SEEK_SET:
733 0 : file->offset = offset;
734 0 : break;
735 0 : case SEEK_CUR:
736 0 : file->offset += offset;
737 0 : break;
738 0 : case SEEK_END:
739 0 : if (!NT_STATUS_IS_OK(cli_qfileinfo_basic(
740 : file->targetcli, file->cli_fd, NULL,
741 : &size, NULL, NULL, NULL, NULL,
742 : NULL))) {
743 0 : errno = EINVAL;
744 0 : TALLOC_FREE(frame);
745 0 : return -1;
746 : }
747 0 : file->offset = size + offset;
748 0 : break;
749 0 : default:
750 0 : errno = EINVAL;
751 0 : break;
752 : }
753 :
754 0 : TALLOC_FREE(frame);
755 0 : return file->offset;
756 : }
757 :
758 :
759 : /*
760 : * Routine to truncate a file given by its file descriptor, to a specified size
761 : */
762 :
763 : int
764 0 : SMBC_ftruncate_ctx(SMBCCTX *context,
765 : SMBCFILE *file,
766 : off_t length)
767 : {
768 0 : off_t size = length;
769 0 : TALLOC_CTX *frame = talloc_stackframe();
770 :
771 0 : if (!context || !context->internal->initialized) {
772 0 : errno = EINVAL;
773 0 : TALLOC_FREE(frame);
774 0 : return -1;
775 : }
776 :
777 0 : if (!SMBC_dlist_contains(context->internal->files, file)) {
778 0 : errno = EBADF;
779 0 : TALLOC_FREE(frame);
780 0 : return -1;
781 : }
782 :
783 0 : if (!file->file) {
784 0 : errno = EINVAL;
785 0 : TALLOC_FREE(frame);
786 0 : return -1;
787 : }
788 :
789 0 : if (!NT_STATUS_IS_OK(cli_ftruncate(file->targetcli, file->cli_fd, (uint64_t)size))) {
790 0 : errno = EINVAL;
791 0 : TALLOC_FREE(frame);
792 0 : return -1;
793 : }
794 :
795 0 : TALLOC_FREE(frame);
796 0 : return 0;
797 : }
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