Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : Wrap disk only vfs functions to sidestep dodgy compilers.
4 : Copyright (C) Tim Potter 1998
5 : Copyright (C) Jeremy Allison 2007
6 :
7 : This program is free software; you can redistribute it and/or modify
8 : it under the terms of the GNU General Public License as published by
9 : the Free Software Foundation; either version 3 of the License, or
10 : (at your option) any later version.
11 :
12 : This program is distributed in the hope that it will be useful,
13 : but WITHOUT ANY WARRANTY; without even the implied warranty of
14 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 : GNU General Public License for more details.
16 :
17 : You should have received a copy of the GNU General Public License
18 : along with this program. If not, see <http://www.gnu.org/licenses/>.
19 : */
20 :
21 : #include "includes.h"
22 : #include "system/time.h"
23 : #include "system/filesys.h"
24 : #include "smbd/smbd.h"
25 : #include "smbd/globals.h"
26 : #include "ntioctl.h"
27 : #include "smbprofile.h"
28 : #include "../libcli/security/security.h"
29 : #include "passdb/lookup_sid.h"
30 : #include "source3/include/msdfs.h"
31 : #include "librpc/gen_ndr/ndr_dfsblobs.h"
32 : #include "lib/util/tevent_unix.h"
33 : #include "lib/util/tevent_ntstatus.h"
34 : #include "lib/util/sys_rw.h"
35 : #include "lib/pthreadpool/pthreadpool_tevent.h"
36 : #include "librpc/gen_ndr/ndr_ioctl.h"
37 : #include "offload_token.h"
38 : #include "util_reparse.h"
39 : #include "lib/util/string_wrappers.h"
40 :
41 : #undef DBGC_CLASS
42 : #define DBGC_CLASS DBGC_VFS
43 :
44 : /* Check for NULL pointer parameters in vfswrap_* functions */
45 :
46 : /* We don't want to have NULL function pointers lying around. Someone
47 : is sure to try and execute them. These stubs are used to prevent
48 : this possibility. */
49 :
50 57101 : static int vfswrap_connect(vfs_handle_struct *handle, const char *service, const char *user)
51 : {
52 874 : bool bval;
53 :
54 57101 : handle->conn->have_proc_fds = sys_have_proc_fds();
55 : #ifdef DISABLE_PROC_FDS
56 20462 : handle->conn->have_proc_fds = false;
57 : #endif
58 :
59 : /*
60 : * assume the kernel will support openat2(),
61 : * it will be reset on the first ENOSYS.
62 : *
63 : * Note that libreplace will always provide openat2(),
64 : * but return -1/errno = ENOSYS...
65 : *
66 : * The option is only there to test the fallback code.
67 : */
68 57101 : bval = lp_parm_bool(SNUM(handle->conn),
69 : "vfs_default",
70 : "VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS",
71 : true);
72 57101 : if (bval) {
73 45020 : handle->conn->open_how_resolve |=
74 : VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS;
75 : }
76 : #ifdef DISABLE_VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS
77 20462 : handle->conn->open_how_resolve &= ~VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS;
78 : #endif
79 :
80 57101 : return 0; /* Return >= 0 for success */
81 : }
82 :
83 57063 : static void vfswrap_disconnect(vfs_handle_struct *handle)
84 : {
85 57063 : }
86 :
87 : /* Disk operations */
88 :
89 1587 : static uint64_t vfswrap_disk_free(vfs_handle_struct *handle,
90 : const struct smb_filename *smb_fname,
91 : uint64_t *bsize,
92 : uint64_t *dfree,
93 : uint64_t *dsize)
94 : {
95 1587 : if (sys_fsusage(smb_fname->base_name, dfree, dsize) != 0) {
96 0 : return (uint64_t)-1;
97 : }
98 :
99 1587 : *bsize = 512;
100 1587 : return *dfree / 2;
101 : }
102 :
103 3254 : static int vfswrap_get_quota(struct vfs_handle_struct *handle,
104 : const struct smb_filename *smb_fname,
105 : enum SMB_QUOTA_TYPE qtype,
106 : unid_t id,
107 : SMB_DISK_QUOTA *qt)
108 : {
109 : #ifdef HAVE_SYS_QUOTAS
110 0 : int result;
111 :
112 3254 : START_PROFILE(syscall_get_quota);
113 3254 : result = sys_get_quota(smb_fname->base_name, qtype, id, qt);
114 3254 : END_PROFILE(syscall_get_quota);
115 3254 : return result;
116 : #else
117 : errno = ENOSYS;
118 : return -1;
119 : #endif
120 : }
121 :
122 4 : static int vfswrap_set_quota(struct vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *qt)
123 : {
124 : #ifdef HAVE_SYS_QUOTAS
125 0 : int result;
126 :
127 4 : START_PROFILE(syscall_set_quota);
128 4 : result = sys_set_quota(handle->conn->connectpath, qtype, id, qt);
129 4 : END_PROFILE(syscall_set_quota);
130 4 : return result;
131 : #else
132 : errno = ENOSYS;
133 : return -1;
134 : #endif
135 : }
136 :
137 276 : static int vfswrap_get_shadow_copy_data(struct vfs_handle_struct *handle,
138 : struct files_struct *fsp,
139 : struct shadow_copy_data *shadow_copy_data,
140 : bool labels)
141 : {
142 276 : errno = ENOSYS;
143 276 : return -1; /* Not implemented. */
144 : }
145 :
146 30713 : static int vfswrap_statvfs(struct vfs_handle_struct *handle,
147 : const struct smb_filename *smb_fname,
148 : struct vfs_statvfs_struct *statbuf)
149 : {
150 30713 : return sys_statvfs(smb_fname->base_name, statbuf);
151 : }
152 :
153 30713 : static uint32_t vfswrap_fs_capabilities(struct vfs_handle_struct *handle,
154 : enum timestamp_set_resolution *p_ts_res)
155 : {
156 474 : const struct loadparm_substitution *lp_sub =
157 30713 : loadparm_s3_global_substitution();
158 30713 : connection_struct *conn = handle->conn;
159 30713 : uint32_t caps = FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
160 30713 : struct smb_filename *smb_fname_cpath = NULL;
161 474 : struct vfs_statvfs_struct statbuf;
162 474 : int ret;
163 :
164 30713 : smb_fname_cpath = synthetic_smb_fname(talloc_tos(),
165 30713 : conn->connectpath,
166 : NULL,
167 : NULL,
168 : 0,
169 : 0);
170 30713 : if (smb_fname_cpath == NULL) {
171 0 : return caps;
172 : }
173 :
174 30713 : ZERO_STRUCT(statbuf);
175 30713 : ret = SMB_VFS_STATVFS(conn, smb_fname_cpath, &statbuf);
176 30713 : if (ret == 0) {
177 30713 : caps = statbuf.FsCapabilities;
178 : }
179 :
180 30713 : *p_ts_res = TIMESTAMP_SET_SECONDS;
181 :
182 : /* Work out what timestamp resolution we can
183 : * use when setting a timestamp. */
184 :
185 30713 : ret = SMB_VFS_STAT(conn, smb_fname_cpath);
186 30713 : if (ret == -1) {
187 0 : TALLOC_FREE(smb_fname_cpath);
188 0 : return caps;
189 : }
190 :
191 30713 : if (smb_fname_cpath->st.st_ex_mtime.tv_nsec ||
192 2 : smb_fname_cpath->st.st_ex_atime.tv_nsec ||
193 0 : smb_fname_cpath->st.st_ex_ctime.tv_nsec) {
194 : /* If any of the normal UNIX directory timestamps
195 : * have a non-zero tv_nsec component assume
196 : * we might be able to set sub-second timestamps.
197 : * See what filetime set primitives we have.
198 : */
199 : #if defined(HAVE_UTIMENSAT)
200 30713 : *p_ts_res = TIMESTAMP_SET_NT_OR_BETTER;
201 : #elif defined(HAVE_UTIMES)
202 : /* utimes allows msec timestamps to be set. */
203 : *p_ts_res = TIMESTAMP_SET_MSEC;
204 : #elif defined(HAVE_UTIME)
205 : /* utime only allows sec timestamps to be set. */
206 : *p_ts_res = TIMESTAMP_SET_SECONDS;
207 : #endif
208 :
209 30713 : DBG_DEBUG("vfswrap_fs_capabilities: timestamp "
210 : "resolution of %s "
211 : "available on share %s, directory %s\n",
212 : *p_ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
213 : lp_servicename(talloc_tos(), lp_sub, conn->params->service),
214 : conn->connectpath );
215 : }
216 30713 : TALLOC_FREE(smb_fname_cpath);
217 30713 : return caps;
218 : }
219 :
220 15367 : static NTSTATUS vfswrap_get_dfs_referrals(struct vfs_handle_struct *handle,
221 : struct dfs_GetDFSReferral *r)
222 : {
223 15367 : struct junction_map *junction = NULL;
224 15367 : size_t consumedcnt = 0;
225 15367 : bool self_referral = false;
226 15367 : char *pathnamep = NULL;
227 15367 : char *local_dfs_path = NULL;
228 0 : NTSTATUS status;
229 0 : size_t i;
230 15367 : uint16_t max_referral_level = r->in.req.max_referral_level;
231 :
232 15367 : if (DEBUGLVL(DBGLVL_DEBUG)) {
233 0 : NDR_PRINT_IN_DEBUG(dfs_GetDFSReferral, r);
234 : }
235 :
236 : /* get the junction entry */
237 15367 : if (r->in.req.servername == NULL) {
238 0 : return NT_STATUS_NOT_FOUND;
239 : }
240 :
241 : /*
242 : * Trim pathname sent by client so it begins with only one backslash.
243 : * Two backslashes confuse some dfs clients
244 : */
245 :
246 15367 : local_dfs_path = talloc_strdup(r, r->in.req.servername);
247 15367 : if (local_dfs_path == NULL) {
248 0 : return NT_STATUS_NO_MEMORY;
249 : }
250 15367 : pathnamep = local_dfs_path;
251 15367 : while (IS_DIRECTORY_SEP(pathnamep[0]) &&
252 15365 : IS_DIRECTORY_SEP(pathnamep[1])) {
253 0 : pathnamep++;
254 : }
255 :
256 15367 : junction = talloc_zero(r, struct junction_map);
257 15367 : if (junction == NULL) {
258 0 : return NT_STATUS_NO_MEMORY;
259 : }
260 :
261 : /* The following call can change cwd. */
262 15367 : status = get_referred_path(r,
263 15367 : handle->conn->session_info,
264 : pathnamep,
265 15367 : handle->conn->sconn->remote_address,
266 15367 : handle->conn->sconn->local_address,
267 : junction, &consumedcnt, &self_referral);
268 15367 : if (!NT_STATUS_IS_OK(status)) {
269 9345 : struct smb_filename connectpath_fname = {
270 9345 : .base_name = handle->conn->connectpath
271 : };
272 9345 : vfs_ChDir(handle->conn, &connectpath_fname);
273 9345 : return status;
274 : }
275 : {
276 6022 : struct smb_filename connectpath_fname = {
277 6022 : .base_name = handle->conn->connectpath
278 : };
279 6022 : vfs_ChDir(handle->conn, &connectpath_fname);
280 : }
281 :
282 6022 : if (!self_referral) {
283 4566 : pathnamep[consumedcnt] = '\0';
284 :
285 4566 : if (DEBUGLVL(DBGLVL_INFO)) {
286 0 : dbgtext("Path %s to alternate path(s):",
287 : pathnamep);
288 0 : for (i=0; i < junction->referral_count; i++) {
289 0 : dbgtext(" %s",
290 0 : junction->referral_list[i].alternate_path);
291 : }
292 0 : dbgtext(".\n");
293 : }
294 : }
295 :
296 6022 : if (r->in.req.max_referral_level <= 2) {
297 0 : max_referral_level = 2;
298 : }
299 6022 : if (r->in.req.max_referral_level >= 3) {
300 6022 : max_referral_level = 3;
301 : }
302 :
303 6022 : r->out.resp = talloc_zero(r, struct dfs_referral_resp);
304 6022 : if (r->out.resp == NULL) {
305 0 : return NT_STATUS_NO_MEMORY;
306 : }
307 :
308 6022 : r->out.resp->path_consumed = strlen_m(pathnamep) * 2;
309 6022 : r->out.resp->nb_referrals = junction->referral_count;
310 :
311 6022 : r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
312 6022 : if (self_referral) {
313 1456 : r->out.resp->header_flags |= DFS_HEADER_FLAG_REFERAL_SVR;
314 : }
315 :
316 6022 : r->out.resp->referral_entries = talloc_zero_array(r,
317 : struct dfs_referral_type,
318 : r->out.resp->nb_referrals);
319 6022 : if (r->out.resp->referral_entries == NULL) {
320 0 : return NT_STATUS_NO_MEMORY;
321 : }
322 :
323 6022 : switch (max_referral_level) {
324 0 : case 2:
325 0 : for(i=0; i < junction->referral_count; i++) {
326 0 : struct referral *ref = &junction->referral_list[i];
327 0 : TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
328 0 : struct dfs_referral_type *t =
329 0 : &r->out.resp->referral_entries[i];
330 0 : struct dfs_referral_v2 *v2 = &t->referral.v2;
331 :
332 0 : t->version = 2;
333 0 : v2->size = VERSION2_REFERRAL_SIZE;
334 0 : if (self_referral) {
335 0 : v2->server_type = DFS_SERVER_ROOT;
336 : } else {
337 0 : v2->server_type = DFS_SERVER_NON_ROOT;
338 : }
339 0 : v2->entry_flags = 0;
340 0 : v2->proximity = ref->proximity;
341 0 : v2->ttl = ref->ttl;
342 0 : v2->DFS_path = talloc_strdup(mem_ctx, pathnamep);
343 0 : if (v2->DFS_path == NULL) {
344 0 : return NT_STATUS_NO_MEMORY;
345 : }
346 0 : v2->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
347 0 : if (v2->DFS_alt_path == NULL) {
348 0 : return NT_STATUS_NO_MEMORY;
349 : }
350 0 : v2->netw_address = talloc_strdup(mem_ctx,
351 0 : ref->alternate_path);
352 0 : if (v2->netw_address == NULL) {
353 0 : return NT_STATUS_NO_MEMORY;
354 : }
355 : }
356 :
357 0 : break;
358 6022 : case 3:
359 16152 : for(i=0; i < junction->referral_count; i++) {
360 10130 : struct referral *ref = &junction->referral_list[i];
361 10130 : TALLOC_CTX *mem_ctx = r->out.resp->referral_entries;
362 10130 : struct dfs_referral_type *t =
363 10130 : &r->out.resp->referral_entries[i];
364 10130 : struct dfs_referral_v3 *v3 = &t->referral.v3;
365 10130 : struct dfs_normal_referral *r1 = &v3->referrals.r1;
366 :
367 10130 : t->version = 3;
368 10130 : v3->size = VERSION3_REFERRAL_SIZE;
369 10130 : if (self_referral) {
370 1456 : v3->server_type = DFS_SERVER_ROOT;
371 : } else {
372 8674 : v3->server_type = DFS_SERVER_NON_ROOT;
373 : }
374 10130 : v3->entry_flags = 0;
375 10130 : v3->ttl = ref->ttl;
376 10130 : r1->DFS_path = talloc_strdup(mem_ctx, pathnamep);
377 10130 : if (r1->DFS_path == NULL) {
378 0 : return NT_STATUS_NO_MEMORY;
379 : }
380 10130 : r1->DFS_alt_path = talloc_strdup(mem_ctx, pathnamep);
381 10130 : if (r1->DFS_alt_path == NULL) {
382 0 : return NT_STATUS_NO_MEMORY;
383 : }
384 20260 : r1->netw_address = talloc_strdup(mem_ctx,
385 10130 : ref->alternate_path);
386 10130 : if (r1->netw_address == NULL) {
387 0 : return NT_STATUS_NO_MEMORY;
388 : }
389 : }
390 6022 : break;
391 0 : default:
392 0 : DBG_ERR("Invalid dfs referral version: %d\n",
393 : max_referral_level);
394 0 : return NT_STATUS_INVALID_LEVEL;
395 : }
396 :
397 6022 : if (DEBUGLVL(DBGLVL_DEBUG)) {
398 0 : NDR_PRINT_OUT_DEBUG(dfs_GetDFSReferral, r);
399 : }
400 :
401 6022 : return NT_STATUS_OK;
402 : }
403 :
404 0 : static NTSTATUS vfswrap_create_dfs_pathat(struct vfs_handle_struct *handle,
405 : struct files_struct *dirfsp,
406 : const struct smb_filename *smb_fname,
407 : const struct referral *reflist,
408 : size_t referral_count)
409 : {
410 0 : TALLOC_CTX *frame = talloc_stackframe();
411 0 : NTSTATUS status = NT_STATUS_NO_MEMORY;
412 0 : int ret;
413 0 : char *msdfs_link = NULL;
414 :
415 : /* Form the msdfs_link contents */
416 0 : msdfs_link = msdfs_link_string(frame,
417 : reflist,
418 : referral_count);
419 0 : if (msdfs_link == NULL) {
420 0 : goto out;
421 : }
422 :
423 0 : ret = symlinkat(msdfs_link,
424 : fsp_get_pathref_fd(dirfsp),
425 0 : smb_fname->base_name);
426 0 : if (ret == 0) {
427 0 : status = NT_STATUS_OK;
428 : } else {
429 0 : status = map_nt_error_from_unix(errno);
430 : }
431 :
432 0 : out:
433 :
434 0 : TALLOC_FREE(frame);
435 0 : return status;
436 : }
437 :
438 : /*
439 : * Read and return the contents of a DFS redirect given a
440 : * pathname. A caller can pass in NULL for ppreflist and
441 : * preferral_count but still determine if this was a
442 : * DFS redirect point by getting NT_STATUS_OK back
443 : * without incurring the overhead of reading and parsing
444 : * the referral contents.
445 : */
446 :
447 4942 : static NTSTATUS vfswrap_read_dfs_pathat(struct vfs_handle_struct *handle,
448 : TALLOC_CTX *mem_ctx,
449 : struct files_struct *dirfsp,
450 : struct smb_filename *smb_fname,
451 : struct referral **ppreflist,
452 : size_t *preferral_count)
453 : {
454 4942 : NTSTATUS status = NT_STATUS_NO_MEMORY;
455 0 : size_t bufsize;
456 4942 : char *link_target = NULL;
457 0 : int referral_len;
458 0 : bool ok;
459 : #if defined(HAVE_BROKEN_READLINK)
460 : char link_target_buf[PATH_MAX];
461 : #else
462 0 : char link_target_buf[7];
463 : #endif
464 0 : int ret;
465 :
466 4942 : if (is_named_stream(smb_fname)) {
467 0 : status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
468 0 : goto err;
469 : }
470 :
471 4942 : if (ppreflist == NULL && preferral_count == NULL) {
472 : /*
473 : * We're only checking if this is a DFS
474 : * redirect. We don't need to return data.
475 : */
476 374 : bufsize = sizeof(link_target_buf);
477 374 : link_target = link_target_buf;
478 : } else {
479 4568 : bufsize = PATH_MAX;
480 4568 : link_target = talloc_array(mem_ctx, char, bufsize);
481 4568 : if (!link_target) {
482 0 : goto err;
483 : }
484 : }
485 :
486 4942 : referral_len = readlinkat(fsp_get_pathref_fd(dirfsp),
487 4942 : smb_fname->base_name,
488 : link_target,
489 : bufsize - 1);
490 4942 : if (referral_len == -1) {
491 0 : if (errno == EINVAL) {
492 : /*
493 : * If the path isn't a link, readlinkat
494 : * returns EINVAL. Allow the caller to
495 : * detect this.
496 : */
497 0 : DBG_INFO("%s is not a link.\n", smb_fname->base_name);
498 0 : status = NT_STATUS_OBJECT_TYPE_MISMATCH;
499 : } else {
500 0 : status = map_nt_error_from_unix(errno);
501 0 : if (errno == ENOENT) {
502 0 : DBG_NOTICE("Error reading "
503 : "msdfs link %s: %s\n",
504 : smb_fname->base_name,
505 : strerror(errno));
506 : } else {
507 0 : DBG_ERR("Error reading "
508 : "msdfs link %s: %s\n",
509 : smb_fname->base_name,
510 : strerror(errno));
511 : }
512 : }
513 0 : goto err;
514 : }
515 4942 : link_target[referral_len] = '\0';
516 :
517 4942 : DBG_INFO("%s -> %s\n",
518 : smb_fname->base_name,
519 : link_target);
520 :
521 4942 : if (!strnequal(link_target, "msdfs:", 6)) {
522 4 : status = NT_STATUS_OBJECT_TYPE_MISMATCH;
523 4 : goto err;
524 : }
525 :
526 4938 : ret = sys_fstatat(fsp_get_pathref_fd(dirfsp),
527 4938 : smb_fname->base_name,
528 : &smb_fname->st,
529 : AT_SYMLINK_NOFOLLOW,
530 4938 : lp_fake_directory_create_times(SNUM(handle->conn)));
531 4938 : if (ret < 0) {
532 0 : status = map_nt_error_from_unix(errno);
533 0 : goto err;
534 : }
535 :
536 4938 : if (ppreflist == NULL && preferral_count == NULL) {
537 : /* Early return for checking if this is a DFS link. */
538 370 : return NT_STATUS_OK;
539 : }
540 :
541 4568 : ok = parse_msdfs_symlink(mem_ctx,
542 4568 : lp_msdfs_shuffle_referrals(SNUM(handle->conn)),
543 : link_target,
544 : ppreflist,
545 : preferral_count);
546 :
547 4568 : if (ok) {
548 4568 : status = NT_STATUS_OK;
549 : } else {
550 0 : status = NT_STATUS_NO_MEMORY;
551 : }
552 :
553 4572 : err:
554 :
555 4572 : if (link_target != link_target_buf) {
556 4568 : TALLOC_FREE(link_target);
557 : }
558 4572 : return status;
559 : }
560 :
561 0 : static NTSTATUS vfswrap_snap_check_path(struct vfs_handle_struct *handle,
562 : TALLOC_CTX *mem_ctx,
563 : const char *service_path,
564 : char **base_volume)
565 : {
566 0 : return NT_STATUS_NOT_SUPPORTED;
567 : }
568 :
569 0 : static NTSTATUS vfswrap_snap_create(struct vfs_handle_struct *handle,
570 : TALLOC_CTX *mem_ctx,
571 : const char *base_volume,
572 : time_t *tstamp,
573 : bool rw,
574 : char **base_path,
575 : char **snap_path)
576 : {
577 0 : return NT_STATUS_NOT_SUPPORTED;
578 : }
579 :
580 0 : static NTSTATUS vfswrap_snap_delete(struct vfs_handle_struct *handle,
581 : TALLOC_CTX *mem_ctx,
582 : char *base_path,
583 : char *snap_path)
584 : {
585 0 : return NT_STATUS_NOT_SUPPORTED;
586 : }
587 :
588 : /* Directory operations */
589 :
590 308341 : static DIR *vfswrap_fdopendir(vfs_handle_struct *handle,
591 : files_struct *fsp,
592 : const char *mask,
593 : uint32_t attr)
594 : {
595 1133 : DIR *result;
596 :
597 308341 : START_PROFILE(syscall_fdopendir);
598 308341 : result = sys_fdopendir(fsp_get_io_fd(fsp));
599 308341 : END_PROFILE(syscall_fdopendir);
600 308341 : return result;
601 : }
602 :
603 160994099 : static struct dirent *vfswrap_readdir(vfs_handle_struct *handle,
604 : struct files_struct *dirfsp,
605 : DIR *dirp)
606 : {
607 7202 : struct dirent *result;
608 :
609 160994099 : START_PROFILE(syscall_readdir);
610 :
611 160994099 : result = readdir(dirp);
612 160994099 : END_PROFILE(syscall_readdir);
613 :
614 160994099 : return result;
615 : }
616 :
617 895426 : static NTSTATUS vfswrap_freaddir_attr(struct vfs_handle_struct *handle,
618 : struct files_struct *fsp,
619 : TALLOC_CTX *mem_ctx,
620 : struct readdir_attr_data **attr_data)
621 : {
622 895426 : return NT_STATUS_NOT_SUPPORTED;
623 : }
624 :
625 2346 : static void vfswrap_rewinddir(vfs_handle_struct *handle, DIR *dirp)
626 : {
627 2346 : START_PROFILE(syscall_rewinddir);
628 2346 : rewinddir(dirp);
629 2346 : END_PROFILE(syscall_rewinddir);
630 2346 : }
631 :
632 13057 : static int vfswrap_mkdirat(vfs_handle_struct *handle,
633 : struct files_struct *dirfsp,
634 : const struct smb_filename *smb_fname,
635 : mode_t mode)
636 : {
637 72 : int result;
638 :
639 13057 : START_PROFILE(syscall_mkdirat);
640 :
641 13057 : result = mkdirat(fsp_get_pathref_fd(dirfsp), smb_fname->base_name, mode);
642 :
643 13057 : END_PROFILE(syscall_mkdirat);
644 13057 : return result;
645 : }
646 :
647 308341 : static int vfswrap_closedir(vfs_handle_struct *handle, DIR *dirp)
648 : {
649 1133 : int result;
650 :
651 308341 : START_PROFILE(syscall_closedir);
652 308341 : result = closedir(dirp);
653 308341 : END_PROFILE(syscall_closedir);
654 308341 : return result;
655 : }
656 :
657 : /* File operations */
658 :
659 6115351 : static int vfswrap_openat(vfs_handle_struct *handle,
660 : const struct files_struct *dirfsp,
661 : const struct smb_filename *smb_fname,
662 : files_struct *fsp,
663 : const struct vfs_open_how *how)
664 : {
665 6115351 : int flags = how->flags;
666 6115351 : mode_t mode = how->mode;
667 6115351 : bool have_opath = false;
668 6115351 : bool became_root = false;
669 30219 : int result;
670 :
671 6115351 : START_PROFILE(syscall_openat);
672 :
673 6115351 : if (how->resolve & ~(VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS |
674 : VFS_OPEN_HOW_WITH_BACKUP_INTENT)) {
675 0 : errno = ENOSYS;
676 0 : result = -1;
677 0 : goto out;
678 : }
679 :
680 6115351 : SMB_ASSERT(!is_named_stream(smb_fname));
681 :
682 : #ifdef O_PATH
683 4209462 : have_opath = true;
684 4209462 : if (fsp->fsp_flags.is_pathref) {
685 3351810 : flags |= O_PATH;
686 : }
687 4209462 : if (flags & O_PATH) {
688 : /*
689 : * From "man 2 openat":
690 : *
691 : * When O_PATH is specified in flags, flag bits other than
692 : * O_CLOEXEC, O_DIRECTORY, and O_NOFOLLOW are ignored.
693 : *
694 : * From "man 2 openat2":
695 : *
696 : * Whereas openat(2) ignores unknown bits in its flags
697 : * argument, openat2() returns an error if unknown or
698 : * conflicting flags are specified in how.flags.
699 : *
700 : * So we better clear ignored/invalid flags
701 : * and only keep the expected ones.
702 : */
703 3859374 : flags &= (O_PATH|O_CLOEXEC|O_DIRECTORY|O_NOFOLLOW);
704 : }
705 : #endif
706 :
707 6115351 : if (how->resolve & VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS) {
708 235756 : struct open_how linux_how = {
709 : .flags = flags,
710 : .mode = mode,
711 : .resolve = RESOLVE_NO_SYMLINKS,
712 : };
713 :
714 235756 : result = openat2(fsp_get_pathref_fd(dirfsp),
715 : smb_fname->base_name,
716 : &linux_how,
717 : sizeof(linux_how));
718 235756 : if (result == -1) {
719 18296 : if (errno == ENOSYS) {
720 : /*
721 : * The kernel doesn't support
722 : * openat2(), so indicate to
723 : * the callers that
724 : * VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS
725 : * would just be a waste of time.
726 : */
727 45 : fsp->conn->open_how_resolve &=
728 : ~VFS_OPEN_HOW_RESOLVE_NO_SYMLINKS;
729 : }
730 18296 : goto out;
731 : }
732 :
733 217460 : goto done;
734 : }
735 :
736 5879595 : if (fsp->fsp_flags.is_pathref && !have_opath) {
737 1486048 : become_root();
738 1486048 : became_root = true;
739 : }
740 :
741 5879595 : result = openat(fsp_get_pathref_fd(dirfsp),
742 5879595 : smb_fname->base_name,
743 : flags,
744 : mode);
745 :
746 5849421 : if (became_root) {
747 1486048 : int err = errno;
748 1486048 : unbecome_root();
749 1486048 : errno = err;
750 : }
751 :
752 4393547 : done:
753 6097055 : if (result >= 0) {
754 4388390 : fsp->fsp_flags.have_proc_fds = fsp->conn->have_proc_fds;
755 : } else {
756 : /*
757 : * "/proc/self/fd/-1" never exists. Indicate to upper
758 : * layers that for this fsp a possible name-based
759 : * fallback is the only way to go.
760 : */
761 1708665 : fsp->fsp_flags.have_proc_fds = false;
762 : }
763 :
764 6115351 : out:
765 6115351 : END_PROFILE(syscall_openat);
766 6115351 : return result;
767 : }
768 552515 : static NTSTATUS vfswrap_create_file(vfs_handle_struct *handle,
769 : struct smb_request *req,
770 : struct files_struct *dirfsp,
771 : struct smb_filename *smb_fname,
772 : uint32_t access_mask,
773 : uint32_t share_access,
774 : uint32_t create_disposition,
775 : uint32_t create_options,
776 : uint32_t file_attributes,
777 : uint32_t oplock_request,
778 : const struct smb2_lease *lease,
779 : uint64_t allocation_size,
780 : uint32_t private_flags,
781 : struct security_descriptor *sd,
782 : struct ea_list *ea_list,
783 : files_struct **result,
784 : int *pinfo,
785 : const struct smb2_create_blobs *in_context_blobs,
786 : struct smb2_create_blobs *out_context_blobs)
787 : {
788 552515 : return create_file_default(handle->conn, req, dirfsp, smb_fname,
789 : access_mask, share_access,
790 : create_disposition, create_options,
791 : file_attributes, oplock_request, lease,
792 : allocation_size, private_flags,
793 : sd, ea_list, result,
794 : pinfo, in_context_blobs, out_context_blobs);
795 : }
796 :
797 4080071 : static int vfswrap_close(vfs_handle_struct *handle, files_struct *fsp)
798 : {
799 24911 : int result;
800 :
801 4080071 : START_PROFILE(syscall_close);
802 4080071 : result = fd_close_posix(fsp);
803 4080071 : END_PROFILE(syscall_close);
804 4080071 : return result;
805 : }
806 :
807 4502 : static ssize_t vfswrap_pread(vfs_handle_struct *handle, files_struct *fsp, void *data,
808 : size_t n, off_t offset)
809 : {
810 14 : ssize_t result;
811 :
812 : #if defined(HAVE_PREAD) || defined(HAVE_PREAD64)
813 4502 : START_PROFILE_BYTES(syscall_pread, n);
814 4502 : result = sys_pread_full(fsp_get_io_fd(fsp), data, n, offset);
815 4502 : END_PROFILE_BYTES(syscall_pread);
816 :
817 4502 : if (result == -1 && errno == ESPIPE) {
818 : /* Maintain the fiction that pipes can be seeked (sought?) on. */
819 0 : result = sys_read(fsp_get_io_fd(fsp), data, n);
820 0 : fh_set_pos(fsp->fh, 0);
821 : }
822 :
823 : #else /* HAVE_PREAD */
824 : errno = ENOSYS;
825 : result = -1;
826 : #endif /* HAVE_PREAD */
827 :
828 4502 : return result;
829 : }
830 :
831 1066 : static ssize_t vfswrap_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data,
832 : size_t n, off_t offset)
833 : {
834 14 : ssize_t result;
835 :
836 : #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
837 1066 : START_PROFILE_BYTES(syscall_pwrite, n);
838 1066 : result = sys_pwrite_full(fsp_get_io_fd(fsp), data, n, offset);
839 1066 : END_PROFILE_BYTES(syscall_pwrite);
840 :
841 1066 : if (result == -1 && errno == ESPIPE) {
842 : /* Maintain the fiction that pipes can be sought on. */
843 0 : result = sys_write(fsp_get_io_fd(fsp), data, n);
844 : }
845 :
846 : #else /* HAVE_PWRITE */
847 : errno = ENOSYS;
848 : result = -1;
849 : #endif /* HAVE_PWRITE */
850 :
851 1066 : return result;
852 : }
853 :
854 : struct vfswrap_pread_state {
855 : ssize_t ret;
856 : int fd;
857 : void *buf;
858 : size_t count;
859 : off_t offset;
860 :
861 : struct vfs_aio_state vfs_aio_state;
862 : SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
863 : };
864 :
865 : static void vfs_pread_do(void *private_data);
866 : static void vfs_pread_done(struct tevent_req *subreq);
867 : static int vfs_pread_state_destructor(struct vfswrap_pread_state *state);
868 :
869 12753 : static struct tevent_req *vfswrap_pread_send(struct vfs_handle_struct *handle,
870 : TALLOC_CTX *mem_ctx,
871 : struct tevent_context *ev,
872 : struct files_struct *fsp,
873 : void *data,
874 : size_t n, off_t offset)
875 : {
876 42 : struct tevent_req *req, *subreq;
877 42 : struct vfswrap_pread_state *state;
878 :
879 12753 : req = tevent_req_create(mem_ctx, &state, struct vfswrap_pread_state);
880 12753 : if (req == NULL) {
881 0 : return NULL;
882 : }
883 :
884 12753 : state->ret = -1;
885 12753 : state->fd = fsp_get_io_fd(fsp);
886 12753 : state->buf = data;
887 12753 : state->count = n;
888 12753 : state->offset = offset;
889 :
890 12753 : SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pread, profile_p,
891 : state->profile_bytes, n);
892 12753 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
893 :
894 12795 : subreq = pthreadpool_tevent_job_send(
895 12753 : state, ev, handle->conn->sconn->pool,
896 : vfs_pread_do, state);
897 12753 : if (tevent_req_nomem(subreq, req)) {
898 0 : return tevent_req_post(req, ev);
899 : }
900 12753 : tevent_req_set_callback(subreq, vfs_pread_done, req);
901 :
902 12753 : talloc_set_destructor(state, vfs_pread_state_destructor);
903 :
904 12753 : return req;
905 : }
906 :
907 12753 : static void vfs_pread_do(void *private_data)
908 : {
909 12753 : struct vfswrap_pread_state *state = talloc_get_type_abort(
910 : private_data, struct vfswrap_pread_state);
911 42 : struct timespec start_time;
912 42 : struct timespec end_time;
913 :
914 12753 : SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
915 :
916 12753 : PROFILE_TIMESTAMP(&start_time);
917 :
918 12753 : state->ret = sys_pread_full(state->fd,
919 : state->buf,
920 : state->count,
921 : state->offset);
922 :
923 12753 : if (state->ret == -1) {
924 0 : state->vfs_aio_state.error = errno;
925 : }
926 :
927 12753 : PROFILE_TIMESTAMP(&end_time);
928 :
929 12753 : state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
930 :
931 12753 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
932 12753 : }
933 :
934 0 : static int vfs_pread_state_destructor(struct vfswrap_pread_state *state)
935 : {
936 0 : return -1;
937 : }
938 :
939 12753 : static void vfs_pread_done(struct tevent_req *subreq)
940 : {
941 12753 : struct tevent_req *req = tevent_req_callback_data(
942 : subreq, struct tevent_req);
943 12753 : struct vfswrap_pread_state *state = tevent_req_data(
944 : req, struct vfswrap_pread_state);
945 42 : int ret;
946 :
947 12753 : ret = pthreadpool_tevent_job_recv(subreq);
948 12753 : TALLOC_FREE(subreq);
949 12753 : SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
950 12753 : talloc_set_destructor(state, NULL);
951 12753 : if (ret != 0) {
952 0 : if (ret != EAGAIN) {
953 0 : tevent_req_error(req, ret);
954 0 : return;
955 : }
956 : /*
957 : * If we get EAGAIN from pthreadpool_tevent_job_recv() this
958 : * means the lower level pthreadpool failed to create a new
959 : * thread. Fallback to sync processing in that case to allow
960 : * some progress for the client.
961 : */
962 0 : vfs_pread_do(state);
963 : }
964 :
965 12753 : tevent_req_done(req);
966 : }
967 :
968 12753 : static ssize_t vfswrap_pread_recv(struct tevent_req *req,
969 : struct vfs_aio_state *vfs_aio_state)
970 : {
971 12753 : struct vfswrap_pread_state *state = tevent_req_data(
972 : req, struct vfswrap_pread_state);
973 :
974 12753 : if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
975 0 : return -1;
976 : }
977 :
978 12753 : *vfs_aio_state = state->vfs_aio_state;
979 12753 : return state->ret;
980 : }
981 :
982 : struct vfswrap_pwrite_state {
983 : ssize_t ret;
984 : int fd;
985 : const void *buf;
986 : size_t count;
987 : off_t offset;
988 :
989 : struct vfs_aio_state vfs_aio_state;
990 : SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
991 : };
992 :
993 : static void vfs_pwrite_do(void *private_data);
994 : static void vfs_pwrite_done(struct tevent_req *subreq);
995 : static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state);
996 :
997 143738 : static struct tevent_req *vfswrap_pwrite_send(struct vfs_handle_struct *handle,
998 : TALLOC_CTX *mem_ctx,
999 : struct tevent_context *ev,
1000 : struct files_struct *fsp,
1001 : const void *data,
1002 : size_t n, off_t offset)
1003 : {
1004 52 : struct tevent_req *req, *subreq;
1005 52 : struct vfswrap_pwrite_state *state;
1006 :
1007 143738 : req = tevent_req_create(mem_ctx, &state, struct vfswrap_pwrite_state);
1008 143738 : if (req == NULL) {
1009 0 : return NULL;
1010 : }
1011 :
1012 143738 : state->ret = -1;
1013 143738 : state->fd = fsp_get_io_fd(fsp);
1014 143738 : state->buf = data;
1015 143738 : state->count = n;
1016 143738 : state->offset = offset;
1017 :
1018 143738 : SMBPROFILE_BYTES_ASYNC_START(syscall_asys_pwrite, profile_p,
1019 : state->profile_bytes, n);
1020 143738 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1021 :
1022 143790 : subreq = pthreadpool_tevent_job_send(
1023 143738 : state, ev, handle->conn->sconn->pool,
1024 : vfs_pwrite_do, state);
1025 143738 : if (tevent_req_nomem(subreq, req)) {
1026 0 : return tevent_req_post(req, ev);
1027 : }
1028 143738 : tevent_req_set_callback(subreq, vfs_pwrite_done, req);
1029 :
1030 143738 : talloc_set_destructor(state, vfs_pwrite_state_destructor);
1031 :
1032 143738 : return req;
1033 : }
1034 :
1035 143738 : static void vfs_pwrite_do(void *private_data)
1036 : {
1037 143738 : struct vfswrap_pwrite_state *state = talloc_get_type_abort(
1038 : private_data, struct vfswrap_pwrite_state);
1039 52 : struct timespec start_time;
1040 52 : struct timespec end_time;
1041 :
1042 143738 : SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1043 :
1044 143738 : PROFILE_TIMESTAMP(&start_time);
1045 :
1046 143738 : state->ret = sys_pwrite_full(state->fd,
1047 : state->buf,
1048 : state->count,
1049 : state->offset);
1050 :
1051 143738 : if (state->ret == -1) {
1052 0 : state->vfs_aio_state.error = errno;
1053 : }
1054 :
1055 143738 : PROFILE_TIMESTAMP(&end_time);
1056 :
1057 143738 : state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1058 :
1059 143738 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1060 143738 : }
1061 :
1062 0 : static int vfs_pwrite_state_destructor(struct vfswrap_pwrite_state *state)
1063 : {
1064 0 : return -1;
1065 : }
1066 :
1067 143738 : static void vfs_pwrite_done(struct tevent_req *subreq)
1068 : {
1069 143738 : struct tevent_req *req = tevent_req_callback_data(
1070 : subreq, struct tevent_req);
1071 143738 : struct vfswrap_pwrite_state *state = tevent_req_data(
1072 : req, struct vfswrap_pwrite_state);
1073 52 : int ret;
1074 :
1075 143738 : ret = pthreadpool_tevent_job_recv(subreq);
1076 143738 : TALLOC_FREE(subreq);
1077 143738 : SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1078 143738 : talloc_set_destructor(state, NULL);
1079 143738 : if (ret != 0) {
1080 0 : if (ret != EAGAIN) {
1081 0 : tevent_req_error(req, ret);
1082 0 : return;
1083 : }
1084 : /*
1085 : * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1086 : * means the lower level pthreadpool failed to create a new
1087 : * thread. Fallback to sync processing in that case to allow
1088 : * some progress for the client.
1089 : */
1090 0 : vfs_pwrite_do(state);
1091 : }
1092 :
1093 143738 : tevent_req_done(req);
1094 : }
1095 :
1096 143738 : static ssize_t vfswrap_pwrite_recv(struct tevent_req *req,
1097 : struct vfs_aio_state *vfs_aio_state)
1098 : {
1099 143738 : struct vfswrap_pwrite_state *state = tevent_req_data(
1100 : req, struct vfswrap_pwrite_state);
1101 :
1102 143738 : if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1103 0 : return -1;
1104 : }
1105 :
1106 143738 : *vfs_aio_state = state->vfs_aio_state;
1107 143738 : return state->ret;
1108 : }
1109 :
1110 : struct vfswrap_fsync_state {
1111 : ssize_t ret;
1112 : int fd;
1113 :
1114 : struct vfs_aio_state vfs_aio_state;
1115 : SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
1116 : };
1117 :
1118 : static void vfs_fsync_do(void *private_data);
1119 : static void vfs_fsync_done(struct tevent_req *subreq);
1120 : static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state);
1121 :
1122 146 : static struct tevent_req *vfswrap_fsync_send(struct vfs_handle_struct *handle,
1123 : TALLOC_CTX *mem_ctx,
1124 : struct tevent_context *ev,
1125 : struct files_struct *fsp)
1126 : {
1127 2 : struct tevent_req *req, *subreq;
1128 2 : struct vfswrap_fsync_state *state;
1129 :
1130 146 : req = tevent_req_create(mem_ctx, &state, struct vfswrap_fsync_state);
1131 146 : if (req == NULL) {
1132 0 : return NULL;
1133 : }
1134 :
1135 146 : state->ret = -1;
1136 146 : state->fd = fsp_get_io_fd(fsp);
1137 :
1138 146 : SMBPROFILE_BYTES_ASYNC_START(syscall_asys_fsync, profile_p,
1139 : state->profile_bytes, 0);
1140 146 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1141 :
1142 148 : subreq = pthreadpool_tevent_job_send(
1143 146 : state, ev, handle->conn->sconn->pool, vfs_fsync_do, state);
1144 146 : if (tevent_req_nomem(subreq, req)) {
1145 0 : return tevent_req_post(req, ev);
1146 : }
1147 146 : tevent_req_set_callback(subreq, vfs_fsync_done, req);
1148 :
1149 146 : talloc_set_destructor(state, vfs_fsync_state_destructor);
1150 :
1151 146 : return req;
1152 : }
1153 :
1154 146 : static void vfs_fsync_do(void *private_data)
1155 : {
1156 146 : struct vfswrap_fsync_state *state = talloc_get_type_abort(
1157 : private_data, struct vfswrap_fsync_state);
1158 2 : struct timespec start_time;
1159 2 : struct timespec end_time;
1160 :
1161 146 : SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
1162 :
1163 146 : PROFILE_TIMESTAMP(&start_time);
1164 :
1165 2 : do {
1166 146 : state->ret = fsync(state->fd);
1167 146 : } while ((state->ret == -1) && (errno == EINTR));
1168 :
1169 146 : if (state->ret == -1) {
1170 0 : state->vfs_aio_state.error = errno;
1171 : }
1172 :
1173 146 : PROFILE_TIMESTAMP(&end_time);
1174 :
1175 146 : state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
1176 :
1177 146 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
1178 146 : }
1179 :
1180 0 : static int vfs_fsync_state_destructor(struct vfswrap_fsync_state *state)
1181 : {
1182 0 : return -1;
1183 : }
1184 :
1185 146 : static void vfs_fsync_done(struct tevent_req *subreq)
1186 : {
1187 146 : struct tevent_req *req = tevent_req_callback_data(
1188 : subreq, struct tevent_req);
1189 146 : struct vfswrap_fsync_state *state = tevent_req_data(
1190 : req, struct vfswrap_fsync_state);
1191 2 : int ret;
1192 :
1193 146 : ret = pthreadpool_tevent_job_recv(subreq);
1194 146 : TALLOC_FREE(subreq);
1195 146 : SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
1196 146 : talloc_set_destructor(state, NULL);
1197 146 : if (ret != 0) {
1198 0 : if (ret != EAGAIN) {
1199 0 : tevent_req_error(req, ret);
1200 0 : return;
1201 : }
1202 : /*
1203 : * If we get EAGAIN from pthreadpool_tevent_job_recv() this
1204 : * means the lower level pthreadpool failed to create a new
1205 : * thread. Fallback to sync processing in that case to allow
1206 : * some progress for the client.
1207 : */
1208 0 : vfs_fsync_do(state);
1209 : }
1210 :
1211 146 : tevent_req_done(req);
1212 : }
1213 :
1214 146 : static int vfswrap_fsync_recv(struct tevent_req *req,
1215 : struct vfs_aio_state *vfs_aio_state)
1216 : {
1217 146 : struct vfswrap_fsync_state *state = tevent_req_data(
1218 : req, struct vfswrap_fsync_state);
1219 :
1220 146 : if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
1221 0 : return -1;
1222 : }
1223 :
1224 146 : *vfs_aio_state = state->vfs_aio_state;
1225 146 : return state->ret;
1226 : }
1227 :
1228 445 : static off_t vfswrap_lseek(vfs_handle_struct *handle, files_struct *fsp, off_t offset, int whence)
1229 : {
1230 445 : off_t result = 0;
1231 :
1232 445 : START_PROFILE(syscall_lseek);
1233 :
1234 445 : result = lseek(fsp_get_io_fd(fsp), offset, whence);
1235 : /*
1236 : * We want to maintain the fiction that we can seek
1237 : * on a fifo for file system purposes. This allows
1238 : * people to set up UNIX fifo's that feed data to Windows
1239 : * applications. JRA.
1240 : */
1241 :
1242 445 : if((result == -1) && (errno == ESPIPE)) {
1243 0 : result = 0;
1244 0 : errno = 0;
1245 : }
1246 :
1247 445 : END_PROFILE(syscall_lseek);
1248 445 : return result;
1249 : }
1250 :
1251 0 : static ssize_t vfswrap_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fromfsp, const DATA_BLOB *hdr,
1252 : off_t offset, size_t n)
1253 : {
1254 0 : ssize_t result;
1255 :
1256 0 : START_PROFILE_BYTES(syscall_sendfile, n);
1257 0 : result = sys_sendfile(tofd, fsp_get_io_fd(fromfsp), hdr, offset, n);
1258 0 : END_PROFILE_BYTES(syscall_sendfile);
1259 0 : return result;
1260 : }
1261 :
1262 0 : static ssize_t vfswrap_recvfile(vfs_handle_struct *handle,
1263 : int fromfd,
1264 : files_struct *tofsp,
1265 : off_t offset,
1266 : size_t n)
1267 : {
1268 0 : ssize_t result;
1269 :
1270 0 : START_PROFILE_BYTES(syscall_recvfile, n);
1271 0 : result = sys_recvfile(fromfd, fsp_get_io_fd(tofsp), offset, n);
1272 0 : END_PROFILE_BYTES(syscall_recvfile);
1273 0 : return result;
1274 : }
1275 :
1276 972 : static int vfswrap_renameat(vfs_handle_struct *handle,
1277 : files_struct *srcfsp,
1278 : const struct smb_filename *smb_fname_src,
1279 : files_struct *dstfsp,
1280 : const struct smb_filename *smb_fname_dst)
1281 : {
1282 972 : int result = -1;
1283 :
1284 972 : START_PROFILE(syscall_renameat);
1285 :
1286 972 : SMB_ASSERT(!is_named_stream(smb_fname_src));
1287 972 : SMB_ASSERT(!is_named_stream(smb_fname_dst));
1288 :
1289 972 : result = renameat(fsp_get_pathref_fd(srcfsp),
1290 972 : smb_fname_src->base_name,
1291 : fsp_get_pathref_fd(dstfsp),
1292 972 : smb_fname_dst->base_name);
1293 :
1294 972 : END_PROFILE(syscall_renameat);
1295 972 : return result;
1296 : }
1297 :
1298 5657269 : static int vfswrap_stat(vfs_handle_struct *handle,
1299 : struct smb_filename *smb_fname)
1300 : {
1301 5657269 : int result = -1;
1302 :
1303 5657269 : START_PROFILE(syscall_stat);
1304 :
1305 5657269 : SMB_ASSERT(!is_named_stream(smb_fname));
1306 :
1307 5657269 : result = sys_stat(smb_fname->base_name, &smb_fname->st,
1308 5657269 : lp_fake_directory_create_times(SNUM(handle->conn)));
1309 :
1310 5657269 : END_PROFILE(syscall_stat);
1311 5657269 : return result;
1312 : }
1313 :
1314 34213608 : static int vfswrap_fstat(vfs_handle_struct *handle, files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1315 : {
1316 125524 : int result;
1317 :
1318 34213608 : START_PROFILE(syscall_fstat);
1319 34213608 : result = sys_fstat(fsp_get_pathref_fd(fsp),
1320 34213608 : sbuf, lp_fake_directory_create_times(SNUM(handle->conn)));
1321 34213608 : END_PROFILE(syscall_fstat);
1322 34213608 : return result;
1323 : }
1324 :
1325 82697 : static int vfswrap_lstat(vfs_handle_struct *handle,
1326 : struct smb_filename *smb_fname)
1327 : {
1328 82697 : int result = -1;
1329 :
1330 82697 : START_PROFILE(syscall_lstat);
1331 :
1332 82697 : SMB_ASSERT(!is_named_stream(smb_fname));
1333 :
1334 82697 : result = sys_lstat(smb_fname->base_name, &smb_fname->st,
1335 82697 : lp_fake_directory_create_times(SNUM(handle->conn)));
1336 :
1337 82697 : END_PROFILE(syscall_lstat);
1338 82697 : return result;
1339 : }
1340 :
1341 44927 : static int vfswrap_fstatat(
1342 : struct vfs_handle_struct *handle,
1343 : const struct files_struct *dirfsp,
1344 : const struct smb_filename *smb_fname,
1345 : SMB_STRUCT_STAT *sbuf,
1346 : int flags)
1347 : {
1348 44927 : int result = -1;
1349 :
1350 44927 : START_PROFILE(syscall_fstatat);
1351 :
1352 44927 : SMB_ASSERT(!is_named_stream(smb_fname));
1353 :
1354 44927 : result = sys_fstatat(
1355 : fsp_get_pathref_fd(dirfsp),
1356 44927 : smb_fname->base_name,
1357 : sbuf,
1358 : flags,
1359 44927 : lp_fake_directory_create_times(SNUM(handle->conn)));
1360 :
1361 44927 : END_PROFILE(syscall_fstatat);
1362 44927 : return result;
1363 : }
1364 :
1365 160696977 : static NTSTATUS vfswrap_translate_name(struct vfs_handle_struct *handle,
1366 : const char *name,
1367 : enum vfs_translate_direction direction,
1368 : TALLOC_CTX *mem_ctx,
1369 : char **mapped_name)
1370 : {
1371 160696977 : return NT_STATUS_NONE_MAPPED;
1372 : }
1373 :
1374 : /**
1375 : * Return allocated parent directory and basename of path
1376 : *
1377 : * Note: if requesting atname, it is returned as talloc child of the
1378 : * parent. Freeing the parent is thus sufficient to free both.
1379 : */
1380 4170985 : static NTSTATUS vfswrap_parent_pathname(struct vfs_handle_struct *handle,
1381 : TALLOC_CTX *mem_ctx,
1382 : const struct smb_filename *smb_fname_in,
1383 : struct smb_filename **parent_dir_out,
1384 : struct smb_filename **atname_out)
1385 : {
1386 4170985 : struct smb_filename *parent = NULL;
1387 4170985 : struct smb_filename *name = NULL;
1388 4170985 : char *p = NULL;
1389 :
1390 4170985 : parent = cp_smb_filename_nostream(mem_ctx, smb_fname_in);
1391 4170985 : if (parent == NULL) {
1392 0 : return NT_STATUS_NO_MEMORY;
1393 : }
1394 4170985 : SET_STAT_INVALID(parent->st);
1395 :
1396 4170985 : p = strrchr_m(parent->base_name, '/'); /* Find final '/', if any */
1397 4170985 : if (p == NULL) {
1398 2924433 : TALLOC_FREE(parent->base_name);
1399 2924433 : parent->base_name = talloc_strdup(parent, ".");
1400 2924433 : if (parent->base_name == NULL) {
1401 0 : TALLOC_FREE(parent);
1402 0 : return NT_STATUS_NO_MEMORY;
1403 : }
1404 2924433 : p = smb_fname_in->base_name;
1405 : } else {
1406 1246552 : *p = '\0';
1407 1246552 : p++;
1408 : }
1409 :
1410 4170985 : if (atname_out == NULL) {
1411 1130 : *parent_dir_out = parent;
1412 1130 : return NT_STATUS_OK;
1413 : }
1414 :
1415 4182317 : name = synthetic_smb_fname(
1416 : parent,
1417 : p,
1418 4169855 : smb_fname_in->stream_name,
1419 : &smb_fname_in->st,
1420 4169855 : smb_fname_in->twrp,
1421 4169855 : smb_fname_in->flags);
1422 4169855 : if (name == NULL) {
1423 0 : return NT_STATUS_NO_MEMORY;
1424 : }
1425 :
1426 4169855 : *parent_dir_out = parent;
1427 4169855 : *atname_out = name;
1428 4169855 : return NT_STATUS_OK;
1429 : }
1430 :
1431 : /*
1432 : * Implement the default fsctl operation.
1433 : */
1434 : static bool vfswrap_logged_ioctl_message = false;
1435 :
1436 3460 : static NTSTATUS vfswrap_fsctl(struct vfs_handle_struct *handle,
1437 : struct files_struct *fsp,
1438 : TALLOC_CTX *ctx,
1439 : uint32_t function,
1440 : uint16_t req_flags, /* Needed for UNICODE ... */
1441 : const uint8_t *_in_data,
1442 : uint32_t in_len,
1443 : uint8_t **_out_data,
1444 : uint32_t max_out_len,
1445 : uint32_t *out_len)
1446 : {
1447 3460 : const char *in_data = (const char *)_in_data;
1448 3460 : char **out_data = (char **)_out_data;
1449 4 : NTSTATUS status;
1450 :
1451 : /*
1452 : * Currently all fsctls operate on the base
1453 : * file if given an alternate data stream.
1454 : * Revisit this if we implement fsctls later
1455 : * that need access to the ADS handle.
1456 : */
1457 3460 : fsp = metadata_fsp(fsp);
1458 :
1459 3460 : switch (function) {
1460 242 : case FSCTL_SET_SPARSE:
1461 : {
1462 242 : bool set_sparse = true;
1463 :
1464 242 : if (in_len >= 1 && in_data[0] == 0) {
1465 40 : set_sparse = false;
1466 : }
1467 :
1468 242 : status = file_set_sparse(handle->conn, fsp, set_sparse);
1469 :
1470 242 : DEBUG(NT_STATUS_IS_OK(status) ? 10 : 9,
1471 : ("FSCTL_SET_SPARSE: fname[%s] set[%u] - %s\n",
1472 : smb_fname_str_dbg(fsp->fsp_name), set_sparse,
1473 : nt_errstr(status)));
1474 :
1475 242 : return status;
1476 : }
1477 :
1478 72 : case FSCTL_CREATE_OR_GET_OBJECT_ID:
1479 : {
1480 0 : unsigned char objid[16];
1481 72 : char *return_data = NULL;
1482 :
1483 : /* This should return the object-id on this file.
1484 : * I think I'll make this be the inode+dev. JRA.
1485 : */
1486 :
1487 72 : DBG_DEBUG("FSCTL_CREATE_OR_GET_OBJECT_ID: called on %s\n",
1488 : fsp_fnum_dbg(fsp));
1489 :
1490 72 : *out_len = MIN(max_out_len, 64);
1491 :
1492 : /* Hmmm, will this cause problems if less data asked for? */
1493 72 : return_data = talloc_array(ctx, char, 64);
1494 72 : if (return_data == NULL) {
1495 0 : return NT_STATUS_NO_MEMORY;
1496 : }
1497 :
1498 : /* For backwards compatibility only store the dev/inode. */
1499 72 : push_file_id_16(return_data, &fsp->file_id);
1500 72 : memcpy(return_data+16,create_volume_objectid(fsp->conn,objid),16);
1501 72 : push_file_id_16(return_data+32, &fsp->file_id);
1502 72 : memset(return_data+48, 0, 16);
1503 72 : *out_data = return_data;
1504 72 : return NT_STATUS_OK;
1505 : }
1506 :
1507 4 : case FSCTL_GET_REPARSE_POINT:
1508 : {
1509 4 : status = fsctl_get_reparse_point(
1510 : fsp, ctx, out_data, max_out_len, out_len);
1511 4 : return status;
1512 : }
1513 :
1514 18 : case FSCTL_SET_REPARSE_POINT:
1515 : {
1516 18 : status = fsctl_set_reparse_point(fsp, ctx, _in_data, in_len);
1517 18 : return status;
1518 : }
1519 :
1520 0 : case FSCTL_DELETE_REPARSE_POINT:
1521 : {
1522 0 : status = fsctl_del_reparse_point(fsp, ctx, _in_data, in_len);
1523 0 : return status;
1524 : }
1525 :
1526 3112 : case FSCTL_GET_SHADOW_COPY_DATA:
1527 : {
1528 : /*
1529 : * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
1530 : * and return their volume names. If max_data_count is 16, then it is just
1531 : * asking for the number of volumes and length of the combined names.
1532 : *
1533 : * pdata is the data allocated by our caller, but that uses
1534 : * total_data_count (which is 0 in our case) rather than max_data_count.
1535 : * Allocate the correct amount and return the pointer to let
1536 : * it be deallocated when we return.
1537 : */
1538 3112 : struct shadow_copy_data *shadow_data = NULL;
1539 3112 : bool labels = False;
1540 3112 : uint32_t labels_data_count = 0;
1541 0 : uint32_t i;
1542 3112 : char *cur_pdata = NULL;
1543 :
1544 3112 : if (max_out_len < 16) {
1545 4 : DBG_ERR("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) < 16 is invalid!\n",
1546 : max_out_len);
1547 4 : return NT_STATUS_INVALID_PARAMETER;
1548 : }
1549 :
1550 3108 : if (max_out_len > 16) {
1551 1413 : labels = True;
1552 : }
1553 :
1554 3108 : shadow_data = talloc_zero(ctx, struct shadow_copy_data);
1555 3108 : if (shadow_data == NULL) {
1556 0 : DBG_ERR("TALLOC_ZERO() failed!\n");
1557 0 : return NT_STATUS_NO_MEMORY;
1558 : }
1559 :
1560 : /*
1561 : * Call the VFS routine to actually do the work.
1562 : */
1563 3108 : if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)!=0) {
1564 276 : int log_lev = DBGLVL_ERR;
1565 276 : if (errno == 0) {
1566 : /* broken module didn't set errno on error */
1567 0 : status = NT_STATUS_UNSUCCESSFUL;
1568 : } else {
1569 276 : status = map_nt_error_from_unix(errno);
1570 276 : if (NT_STATUS_EQUAL(status,
1571 : NT_STATUS_NOT_SUPPORTED)) {
1572 276 : log_lev = DBGLVL_INFO;
1573 : }
1574 : }
1575 276 : DEBUG(log_lev, ("FSCTL_GET_SHADOW_COPY_DATA: "
1576 : "connectpath %s, failed - %s.\n",
1577 : fsp->conn->connectpath,
1578 : nt_errstr(status)));
1579 276 : TALLOC_FREE(shadow_data);
1580 276 : return status;
1581 : }
1582 :
1583 2832 : labels_data_count = (shadow_data->num_volumes * 2 *
1584 : sizeof(SHADOW_COPY_LABEL)) + 2;
1585 :
1586 2832 : if (!labels) {
1587 1419 : *out_len = 16;
1588 : } else {
1589 1413 : *out_len = 12 + labels_data_count;
1590 : }
1591 :
1592 2832 : if (max_out_len < *out_len) {
1593 0 : DBG_ERR("FSCTL_GET_SHADOW_COPY_DATA: max_data_count(%u) too small (%u) bytes needed!\n",
1594 : max_out_len, *out_len);
1595 0 : TALLOC_FREE(shadow_data);
1596 0 : return NT_STATUS_BUFFER_TOO_SMALL;
1597 : }
1598 :
1599 2832 : cur_pdata = talloc_zero_array(ctx, char, *out_len);
1600 2832 : if (cur_pdata == NULL) {
1601 0 : TALLOC_FREE(shadow_data);
1602 0 : return NT_STATUS_NO_MEMORY;
1603 : }
1604 :
1605 2832 : *out_data = cur_pdata;
1606 :
1607 : /* num_volumes 4 bytes */
1608 2832 : SIVAL(cur_pdata, 0, shadow_data->num_volumes);
1609 :
1610 2832 : if (labels) {
1611 : /* num_labels 4 bytes */
1612 1413 : SIVAL(cur_pdata, 4, shadow_data->num_volumes);
1613 : }
1614 :
1615 : /* needed_data_count 4 bytes */
1616 2832 : SIVAL(cur_pdata, 8, labels_data_count);
1617 :
1618 2832 : cur_pdata += 12;
1619 :
1620 2832 : DBG_DEBUG("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for path[%s].\n",
1621 : shadow_data->num_volumes, fsp_str_dbg(fsp));
1622 2832 : if (labels && shadow_data->labels) {
1623 5622 : for (i=0; i<shadow_data->num_volumes; i++) {
1624 4209 : size_t len = 0;
1625 4209 : status = srvstr_push(cur_pdata, req_flags,
1626 : cur_pdata, shadow_data->labels[i],
1627 : 2 * sizeof(SHADOW_COPY_LABEL),
1628 : STR_UNICODE|STR_TERMINATE, &len);
1629 4209 : if (!NT_STATUS_IS_OK(status)) {
1630 0 : TALLOC_FREE(*out_data);
1631 0 : TALLOC_FREE(shadow_data);
1632 0 : return status;
1633 : }
1634 4209 : cur_pdata += 2 * sizeof(SHADOW_COPY_LABEL);
1635 4209 : DEBUGADD(DBGLVL_DEBUG,("Label[%u]: '%s'\n",i,shadow_data->labels[i]));
1636 : }
1637 : }
1638 :
1639 2832 : TALLOC_FREE(shadow_data);
1640 :
1641 2832 : return NT_STATUS_OK;
1642 : }
1643 :
1644 4 : case FSCTL_FIND_FILES_BY_SID:
1645 : {
1646 : /* pretend this succeeded -
1647 : *
1648 : * we have to send back a list with all files owned by this SID
1649 : *
1650 : * but I have to check that --metze
1651 : */
1652 0 : ssize_t ret;
1653 0 : struct dom_sid sid;
1654 0 : struct dom_sid_buf buf;
1655 0 : uid_t uid;
1656 0 : size_t sid_len;
1657 :
1658 4 : DBG_DEBUG("FSCTL_FIND_FILES_BY_SID: called on %s\n",
1659 : fsp_fnum_dbg(fsp));
1660 :
1661 4 : if (in_len < 8) {
1662 : /* NT_STATUS_BUFFER_TOO_SMALL maybe? */
1663 4 : return NT_STATUS_INVALID_PARAMETER;
1664 : }
1665 :
1666 0 : sid_len = MIN(in_len - 4,SID_MAX_SIZE);
1667 :
1668 : /* unknown 4 bytes: this is not the length of the sid :-( */
1669 : /*unknown = IVAL(pdata,0);*/
1670 :
1671 0 : ret = sid_parse(_in_data + 4, sid_len, &sid);
1672 0 : if (ret == -1) {
1673 0 : return NT_STATUS_INVALID_PARAMETER;
1674 : }
1675 0 : DEBUGADD(DBGLVL_DEBUG, ("for SID: %s\n",
1676 : dom_sid_str_buf(&sid, &buf)));
1677 :
1678 0 : if (!sid_to_uid(&sid, &uid)) {
1679 0 : DBG_ERR("sid_to_uid: failed, sid[%s] sid_len[%lu]\n",
1680 : dom_sid_str_buf(&sid, &buf),
1681 : (unsigned long)sid_len);
1682 0 : uid = (-1);
1683 : }
1684 :
1685 : /* we can take a look at the find source :-)
1686 : *
1687 : * find ./ -uid $uid -name '*' is what we need here
1688 : *
1689 : *
1690 : * and send 4bytes len and then NULL terminated unicode strings
1691 : * for each file
1692 : *
1693 : * but I don't know how to deal with the paged results
1694 : * (maybe we can hang the result anywhere in the fsp struct)
1695 : *
1696 : * but I don't know how to deal with the paged results
1697 : * (maybe we can hang the result anywhere in the fsp struct)
1698 : *
1699 : * we don't send all files at once
1700 : * and at the next we should *not* start from the beginning,
1701 : * so we have to cache the result
1702 : *
1703 : * --metze
1704 : */
1705 :
1706 : /* this works for now... */
1707 0 : return NT_STATUS_OK;
1708 : }
1709 :
1710 4 : case FSCTL_QUERY_ALLOCATED_RANGES:
1711 : {
1712 : /* FIXME: This is just a dummy reply, telling that all of the
1713 : * file is allocated. MKS cp needs that.
1714 : * Adding the real allocated ranges via FIEMAP on Linux
1715 : * and SEEK_DATA/SEEK_HOLE on Solaris is needed to make
1716 : * this FSCTL correct for sparse files.
1717 : */
1718 0 : uint64_t offset, length;
1719 4 : char *out_data_tmp = NULL;
1720 :
1721 4 : if (in_len != 16) {
1722 0 : DBG_ERR("FSCTL_QUERY_ALLOCATED_RANGES: data_count(%u) != 16 is invalid!\n",
1723 : in_len);
1724 0 : return NT_STATUS_INVALID_PARAMETER;
1725 : }
1726 :
1727 4 : if (max_out_len < 16) {
1728 0 : DBG_ERR("FSCTL_QUERY_ALLOCATED_RANGES: max_out_len (%u) < 16 is invalid!\n",
1729 : max_out_len);
1730 0 : return NT_STATUS_INVALID_PARAMETER;
1731 : }
1732 :
1733 4 : offset = BVAL(in_data,0);
1734 4 : length = BVAL(in_data,8);
1735 :
1736 4 : if (offset + length < offset) {
1737 : /* No 64-bit integer wrap. */
1738 0 : return NT_STATUS_INVALID_PARAMETER;
1739 : }
1740 :
1741 : /* Shouldn't this be SMB_VFS_STAT ... ? */
1742 4 : status = vfs_stat_fsp(fsp);
1743 4 : if (!NT_STATUS_IS_OK(status)) {
1744 0 : return status;
1745 : }
1746 :
1747 4 : *out_len = 16;
1748 4 : out_data_tmp = talloc_array(ctx, char, *out_len);
1749 4 : if (out_data_tmp == NULL) {
1750 0 : DBG_DEBUG("unable to allocate memory for response\n");
1751 0 : return NT_STATUS_NO_MEMORY;
1752 : }
1753 :
1754 4 : if (offset > fsp->fsp_name->st.st_ex_size ||
1755 4 : fsp->fsp_name->st.st_ex_size == 0 ||
1756 : length == 0) {
1757 4 : memset(out_data_tmp, 0, *out_len);
1758 : } else {
1759 0 : uint64_t end = offset + length;
1760 0 : end = MIN(end, fsp->fsp_name->st.st_ex_size);
1761 0 : SBVAL(out_data_tmp, 0, 0);
1762 0 : SBVAL(out_data_tmp, 8, end);
1763 : }
1764 :
1765 4 : *out_data = out_data_tmp;
1766 :
1767 4 : return NT_STATUS_OK;
1768 : }
1769 :
1770 4 : case FSCTL_IS_VOLUME_DIRTY:
1771 : {
1772 4 : DBG_DEBUG("FSCTL_IS_VOLUME_DIRTY: called on %s "
1773 : "(but remotely not supported)\n", fsp_fnum_dbg(fsp));
1774 : /*
1775 : * http://msdn.microsoft.com/en-us/library/cc232128%28PROT.10%29.aspx
1776 : * says we have to respond with NT_STATUS_INVALID_PARAMETER
1777 : */
1778 4 : return NT_STATUS_INVALID_PARAMETER;
1779 : }
1780 :
1781 0 : default:
1782 : /*
1783 : * Only print once ... unfortunately there could be lots of
1784 : * different FSCTLs that are called.
1785 : */
1786 0 : if (!vfswrap_logged_ioctl_message) {
1787 0 : vfswrap_logged_ioctl_message = true;
1788 0 : DBG_NOTICE("%s (0x%x): Currently not implemented.\n",
1789 : __func__, function);
1790 : }
1791 : }
1792 :
1793 0 : return NT_STATUS_NOT_SUPPORTED;
1794 : }
1795 :
1796 : static bool vfswrap_is_offline(struct connection_struct *conn,
1797 : const struct smb_filename *fname);
1798 :
1799 : struct vfswrap_get_dos_attributes_state {
1800 : struct vfs_aio_state aio_state;
1801 : connection_struct *conn;
1802 : TALLOC_CTX *mem_ctx;
1803 : struct tevent_context *ev;
1804 : files_struct *dir_fsp;
1805 : struct smb_filename *smb_fname;
1806 : uint32_t dosmode;
1807 : bool as_root;
1808 : };
1809 :
1810 : static void vfswrap_get_dos_attributes_getxattr_done(struct tevent_req *subreq);
1811 :
1812 20143 : static struct tevent_req *vfswrap_get_dos_attributes_send(
1813 : TALLOC_CTX *mem_ctx,
1814 : struct tevent_context *ev,
1815 : struct vfs_handle_struct *handle,
1816 : files_struct *dir_fsp,
1817 : struct smb_filename *smb_fname)
1818 : {
1819 20143 : struct tevent_req *req = NULL;
1820 20143 : struct tevent_req *subreq = NULL;
1821 20143 : struct vfswrap_get_dos_attributes_state *state = NULL;
1822 :
1823 20143 : SMB_ASSERT(!is_named_stream(smb_fname));
1824 :
1825 20143 : req = tevent_req_create(mem_ctx, &state,
1826 : struct vfswrap_get_dos_attributes_state);
1827 20143 : if (req == NULL) {
1828 0 : return NULL;
1829 : }
1830 :
1831 20143 : *state = (struct vfswrap_get_dos_attributes_state) {
1832 20143 : .conn = dir_fsp->conn,
1833 : .mem_ctx = mem_ctx,
1834 : .ev = ev,
1835 : .dir_fsp = dir_fsp,
1836 : .smb_fname = smb_fname,
1837 : };
1838 :
1839 20143 : if (!lp_store_dos_attributes(SNUM(dir_fsp->conn))) {
1840 0 : DBG_ERR("%s: \"smbd async dosmode\" enabled, but "
1841 : "\"store dos attributes\" is disabled\n",
1842 : dir_fsp->conn->connectpath);
1843 0 : tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
1844 0 : return tevent_req_post(req, ev);
1845 : }
1846 :
1847 20143 : subreq = SMB_VFS_GETXATTRAT_SEND(state,
1848 : ev,
1849 : dir_fsp,
1850 : smb_fname,
1851 : SAMBA_XATTR_DOS_ATTRIB,
1852 : sizeof(fstring));
1853 20143 : if (tevent_req_nomem(subreq, req)) {
1854 0 : return tevent_req_post(req, ev);
1855 : }
1856 20143 : tevent_req_set_callback(subreq,
1857 : vfswrap_get_dos_attributes_getxattr_done,
1858 : req);
1859 :
1860 20143 : return req;
1861 : }
1862 :
1863 20145 : static void vfswrap_get_dos_attributes_getxattr_done(struct tevent_req *subreq)
1864 : {
1865 0 : struct tevent_req *req =
1866 20145 : tevent_req_callback_data(subreq,
1867 : struct tevent_req);
1868 0 : struct vfswrap_get_dos_attributes_state *state =
1869 20145 : tevent_req_data(req,
1870 : struct vfswrap_get_dos_attributes_state);
1871 0 : ssize_t xattr_size;
1872 20145 : DATA_BLOB blob = {0};
1873 20145 : char *path = NULL;
1874 20145 : char *tofree = NULL;
1875 0 : char pathbuf[PATH_MAX+1];
1876 0 : ssize_t pathlen;
1877 0 : struct smb_filename smb_fname;
1878 0 : bool offline;
1879 0 : NTSTATUS status;
1880 :
1881 20145 : xattr_size = SMB_VFS_GETXATTRAT_RECV(subreq,
1882 : &state->aio_state,
1883 : state,
1884 : &blob.data);
1885 20145 : TALLOC_FREE(subreq);
1886 20145 : if (xattr_size == -1) {
1887 128 : status = map_nt_error_from_unix(state->aio_state.error);
1888 :
1889 128 : if (state->as_root) {
1890 2 : tevent_req_nterror(req, status);
1891 2 : return;
1892 : }
1893 126 : if (!NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
1894 124 : tevent_req_nterror(req, status);
1895 124 : return;
1896 : }
1897 :
1898 2 : state->as_root = true;
1899 :
1900 2 : set_effective_capability(DAC_OVERRIDE_CAPABILITY);
1901 2 : subreq = SMB_VFS_GETXATTRAT_SEND(state,
1902 : state->ev,
1903 : state->dir_fsp,
1904 : state->smb_fname,
1905 : SAMBA_XATTR_DOS_ATTRIB,
1906 : sizeof(fstring));
1907 2 : drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
1908 2 : if (tevent_req_nomem(subreq, req)) {
1909 0 : return;
1910 : }
1911 2 : tevent_req_set_callback(subreq,
1912 : vfswrap_get_dos_attributes_getxattr_done,
1913 : req);
1914 2 : return;
1915 : }
1916 :
1917 20017 : blob.length = xattr_size;
1918 :
1919 20017 : status = parse_dos_attribute_blob(state->smb_fname,
1920 : blob,
1921 : &state->dosmode);
1922 20017 : if (!NT_STATUS_IS_OK(status)) {
1923 0 : tevent_req_nterror(req, status);
1924 0 : return;
1925 : }
1926 :
1927 20017 : pathlen = full_path_tos(state->dir_fsp->fsp_name->base_name,
1928 20017 : state->smb_fname->base_name,
1929 : pathbuf,
1930 : sizeof(pathbuf),
1931 : &path,
1932 : &tofree);
1933 20017 : if (pathlen == -1) {
1934 0 : tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1935 0 : return;
1936 : }
1937 :
1938 20017 : smb_fname = (struct smb_filename) {
1939 : .base_name = path,
1940 20017 : .st = state->smb_fname->st,
1941 20017 : .flags = state->smb_fname->flags,
1942 20017 : .twrp = state->smb_fname->twrp,
1943 : };
1944 :
1945 20017 : offline = vfswrap_is_offline(state->conn, &smb_fname);
1946 20017 : if (offline) {
1947 0 : state->dosmode |= FILE_ATTRIBUTE_OFFLINE;
1948 : }
1949 20017 : TALLOC_FREE(tofree);
1950 :
1951 20017 : tevent_req_done(req);
1952 20017 : return;
1953 : }
1954 :
1955 20143 : static NTSTATUS vfswrap_get_dos_attributes_recv(struct tevent_req *req,
1956 : struct vfs_aio_state *aio_state,
1957 : uint32_t *dosmode)
1958 : {
1959 0 : struct vfswrap_get_dos_attributes_state *state =
1960 20143 : tevent_req_data(req,
1961 : struct vfswrap_get_dos_attributes_state);
1962 0 : NTSTATUS status;
1963 :
1964 20143 : if (tevent_req_is_nterror(req, &status)) {
1965 126 : tevent_req_received(req);
1966 126 : return status;
1967 : }
1968 :
1969 20017 : *aio_state = state->aio_state;
1970 20017 : *dosmode = state->dosmode;
1971 20017 : tevent_req_received(req);
1972 20017 : return NT_STATUS_OK;
1973 : }
1974 :
1975 1450651 : static NTSTATUS vfswrap_fget_dos_attributes(struct vfs_handle_struct *handle,
1976 : struct files_struct *fsp,
1977 : uint32_t *dosmode)
1978 : {
1979 2249 : bool offline;
1980 :
1981 1450651 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
1982 :
1983 1450651 : offline = vfswrap_is_offline(handle->conn, fsp->fsp_name);
1984 1450651 : if (offline) {
1985 0 : *dosmode |= FILE_ATTRIBUTE_OFFLINE;
1986 : }
1987 :
1988 1450651 : return fget_ea_dos_attribute(fsp, dosmode);
1989 : }
1990 :
1991 175551 : static NTSTATUS vfswrap_fset_dos_attributes(struct vfs_handle_struct *handle,
1992 : struct files_struct *fsp,
1993 : uint32_t dosmode)
1994 : {
1995 175551 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
1996 :
1997 175551 : return set_ea_dos_attribute(handle->conn, fsp->fsp_name, dosmode);
1998 : }
1999 :
2000 : static struct vfs_offload_ctx *vfswrap_offload_ctx;
2001 :
2002 : struct vfswrap_offload_read_state {
2003 : DATA_BLOB token;
2004 : };
2005 :
2006 280 : static struct tevent_req *vfswrap_offload_read_send(
2007 : TALLOC_CTX *mem_ctx,
2008 : struct tevent_context *ev,
2009 : struct vfs_handle_struct *handle,
2010 : struct files_struct *fsp,
2011 : uint32_t fsctl,
2012 : uint32_t ttl,
2013 : off_t offset,
2014 : size_t to_copy)
2015 : {
2016 280 : struct tevent_req *req = NULL;
2017 280 : struct vfswrap_offload_read_state *state = NULL;
2018 0 : NTSTATUS status;
2019 :
2020 280 : req = tevent_req_create(mem_ctx, &state,
2021 : struct vfswrap_offload_read_state);
2022 280 : if (req == NULL) {
2023 0 : return NULL;
2024 : }
2025 :
2026 280 : status = vfs_offload_token_ctx_init(fsp->conn->sconn->client,
2027 : &vfswrap_offload_ctx);
2028 280 : if (tevent_req_nterror(req, status)) {
2029 0 : return tevent_req_post(req, ev);
2030 : }
2031 :
2032 280 : if (fsctl != FSCTL_SRV_REQUEST_RESUME_KEY) {
2033 0 : tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
2034 0 : return tevent_req_post(req, ev);
2035 : }
2036 :
2037 280 : status = vfs_offload_token_create_blob(state, fsp, fsctl,
2038 280 : &state->token);
2039 280 : if (tevent_req_nterror(req, status)) {
2040 0 : return tevent_req_post(req, ev);
2041 : }
2042 :
2043 280 : status = vfs_offload_token_db_store_fsp(vfswrap_offload_ctx, fsp,
2044 280 : &state->token);
2045 280 : if (tevent_req_nterror(req, status)) {
2046 0 : return tevent_req_post(req, ev);
2047 : }
2048 :
2049 280 : tevent_req_done(req);
2050 280 : return tevent_req_post(req, ev);
2051 : }
2052 :
2053 280 : static NTSTATUS vfswrap_offload_read_recv(struct tevent_req *req,
2054 : struct vfs_handle_struct *handle,
2055 : TALLOC_CTX *mem_ctx,
2056 : uint32_t *flags,
2057 : uint64_t *xferlen,
2058 : DATA_BLOB *token)
2059 : {
2060 280 : struct vfswrap_offload_read_state *state = tevent_req_data(
2061 : req, struct vfswrap_offload_read_state);
2062 0 : NTSTATUS status;
2063 :
2064 280 : if (tevent_req_is_nterror(req, &status)) {
2065 0 : tevent_req_received(req);
2066 0 : return status;
2067 : }
2068 :
2069 280 : *flags = 0;
2070 280 : *xferlen = 0;
2071 280 : token->length = state->token.length;
2072 280 : token->data = talloc_move(mem_ctx, &state->token.data);
2073 :
2074 280 : tevent_req_received(req);
2075 280 : return NT_STATUS_OK;
2076 : }
2077 :
2078 : struct vfswrap_offload_write_state {
2079 : uint8_t *buf;
2080 : bool read_lck_locked;
2081 : bool write_lck_locked;
2082 : DATA_BLOB *token;
2083 : struct tevent_context *src_ev;
2084 : struct files_struct *src_fsp;
2085 : off_t src_off;
2086 : struct tevent_context *dst_ev;
2087 : struct files_struct *dst_fsp;
2088 : off_t dst_off;
2089 : off_t to_copy;
2090 : off_t remaining;
2091 : off_t copied;
2092 : size_t next_io_size;
2093 : };
2094 :
2095 624 : static void vfswrap_offload_write_cleanup(struct tevent_req *req,
2096 : enum tevent_req_state req_state)
2097 : {
2098 624 : struct vfswrap_offload_write_state *state = tevent_req_data(
2099 : req, struct vfswrap_offload_write_state);
2100 0 : bool ok;
2101 :
2102 624 : if (state->dst_fsp == NULL) {
2103 504 : return;
2104 : }
2105 :
2106 120 : ok = change_to_user_and_service_by_fsp(state->dst_fsp);
2107 120 : SMB_ASSERT(ok);
2108 120 : state->dst_fsp = NULL;
2109 : }
2110 :
2111 : static NTSTATUS vfswrap_offload_copy_file_range(struct tevent_req *req);
2112 : static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req);
2113 :
2114 312 : static struct tevent_req *vfswrap_offload_write_send(
2115 : struct vfs_handle_struct *handle,
2116 : TALLOC_CTX *mem_ctx,
2117 : struct tevent_context *ev,
2118 : uint32_t fsctl,
2119 : DATA_BLOB *token,
2120 : off_t transfer_offset,
2121 : struct files_struct *dest_fsp,
2122 : off_t dest_off,
2123 : off_t to_copy)
2124 : {
2125 0 : struct tevent_req *req;
2126 312 : struct vfswrap_offload_write_state *state = NULL;
2127 : /* off_t is signed! */
2128 312 : off_t max_offset = INT64_MAX - to_copy;
2129 312 : size_t num = MIN(to_copy, COPYCHUNK_MAX_TOTAL_LEN);
2130 312 : files_struct *src_fsp = NULL;
2131 0 : NTSTATUS status;
2132 0 : bool ok;
2133 :
2134 312 : req = tevent_req_create(mem_ctx, &state,
2135 : struct vfswrap_offload_write_state);
2136 312 : if (req == NULL) {
2137 0 : return NULL;
2138 : }
2139 :
2140 312 : *state = (struct vfswrap_offload_write_state) {
2141 : .token = token,
2142 : .src_off = transfer_offset,
2143 : .dst_ev = ev,
2144 : .dst_fsp = dest_fsp,
2145 : .dst_off = dest_off,
2146 : .to_copy = to_copy,
2147 : .remaining = to_copy,
2148 : };
2149 :
2150 312 : tevent_req_set_cleanup_fn(req, vfswrap_offload_write_cleanup);
2151 :
2152 312 : switch (fsctl) {
2153 312 : case FSCTL_SRV_COPYCHUNK:
2154 : case FSCTL_SRV_COPYCHUNK_WRITE:
2155 312 : break;
2156 :
2157 0 : case FSCTL_OFFLOAD_WRITE:
2158 0 : tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
2159 0 : return tevent_req_post(req, ev);
2160 :
2161 0 : case FSCTL_DUP_EXTENTS_TO_FILE:
2162 0 : DBG_DEBUG("COW clones not supported by vfs_default\n");
2163 0 : tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2164 0 : return tevent_req_post(req, ev);
2165 :
2166 0 : default:
2167 0 : tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2168 0 : return tevent_req_post(req, ev);
2169 : }
2170 :
2171 : /*
2172 : * From here on we assume a copy-chunk fsctl
2173 : */
2174 :
2175 312 : if (to_copy == 0) {
2176 8 : tevent_req_done(req);
2177 8 : return tevent_req_post(req, ev);
2178 : }
2179 :
2180 304 : if (state->src_off > max_offset) {
2181 : /*
2182 : * Protect integer checks below.
2183 : */
2184 0 : tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2185 0 : return tevent_req_post(req, ev);
2186 : }
2187 304 : if (state->src_off < 0) {
2188 : /*
2189 : * Protect integer checks below.
2190 : */
2191 0 : tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2192 0 : return tevent_req_post(req, ev);
2193 : }
2194 304 : if (state->dst_off > max_offset) {
2195 : /*
2196 : * Protect integer checks below.
2197 : */
2198 0 : tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2199 0 : return tevent_req_post(req, ev);
2200 : }
2201 304 : if (state->dst_off < 0) {
2202 : /*
2203 : * Protect integer checks below.
2204 : */
2205 0 : tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2206 0 : return tevent_req_post(req, ev);
2207 : }
2208 :
2209 304 : status = vfs_offload_token_db_fetch_fsp(vfswrap_offload_ctx,
2210 : token, &src_fsp);
2211 304 : if (tevent_req_nterror(req, status)) {
2212 16 : return tevent_req_post(req, ev);
2213 : }
2214 :
2215 288 : DBG_DEBUG("server side copy chunk of length %" PRIu64 "\n", to_copy);
2216 :
2217 288 : status = vfs_offload_token_check_handles(fsctl, src_fsp, dest_fsp);
2218 288 : if (!NT_STATUS_IS_OK(status)) {
2219 24 : tevent_req_nterror(req, status);
2220 24 : return tevent_req_post(req, ev);
2221 : }
2222 :
2223 264 : ok = change_to_user_and_service_by_fsp(src_fsp);
2224 264 : if (!ok) {
2225 0 : tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
2226 0 : return tevent_req_post(req, ev);
2227 : }
2228 :
2229 264 : state->src_ev = src_fsp->conn->sconn->ev_ctx;
2230 264 : state->src_fsp = src_fsp;
2231 :
2232 264 : status = vfs_stat_fsp(src_fsp);
2233 264 : if (tevent_req_nterror(req, status)) {
2234 0 : return tevent_req_post(req, ev);
2235 : }
2236 :
2237 264 : if (src_fsp->fsp_name->st.st_ex_size < state->src_off + to_copy) {
2238 : /*
2239 : * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
2240 : * If the SourceOffset or SourceOffset + Length extends beyond
2241 : * the end of file, the server SHOULD<240> treat this as a
2242 : * STATUS_END_OF_FILE error.
2243 : * ...
2244 : * <240> Section 3.3.5.15.6: Windows servers will return
2245 : * STATUS_INVALID_VIEW_SIZE instead of STATUS_END_OF_FILE.
2246 : */
2247 16 : tevent_req_nterror(req, NT_STATUS_INVALID_VIEW_SIZE);
2248 16 : return tevent_req_post(req, ev);
2249 : }
2250 :
2251 248 : status = vfswrap_offload_copy_file_range(req);
2252 248 : if (NT_STATUS_IS_OK(status)) {
2253 192 : tevent_req_done(req);
2254 192 : return tevent_req_post(req, ev);
2255 : }
2256 56 : if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
2257 16 : tevent_req_nterror(req, status);
2258 16 : return tevent_req_post(req, ev);
2259 : }
2260 :
2261 40 : state->buf = talloc_array(state, uint8_t, num);
2262 40 : if (tevent_req_nomem(state->buf, req)) {
2263 0 : return tevent_req_post(req, ev);
2264 : }
2265 :
2266 40 : status = vfswrap_offload_write_loop(req);
2267 40 : if (!NT_STATUS_IS_OK(status)) {
2268 0 : tevent_req_nterror(req, status);
2269 0 : return tevent_req_post(req, ev);
2270 : }
2271 :
2272 40 : return req;
2273 : }
2274 :
2275 248 : static NTSTATUS vfswrap_offload_copy_file_range(struct tevent_req *req)
2276 : {
2277 248 : struct vfswrap_offload_write_state *state = tevent_req_data(
2278 : req, struct vfswrap_offload_write_state);
2279 0 : struct lock_struct lck;
2280 0 : ssize_t nwritten;
2281 0 : NTSTATUS status;
2282 0 : bool same_file;
2283 0 : bool ok;
2284 0 : static bool try_copy_file_range = true;
2285 :
2286 248 : if (!try_copy_file_range) {
2287 0 : return NT_STATUS_MORE_PROCESSING_REQUIRED;
2288 : }
2289 :
2290 248 : same_file = file_id_equal(&state->src_fsp->file_id,
2291 248 : &state->dst_fsp->file_id);
2292 264 : if (same_file &&
2293 16 : sys_io_ranges_overlap(state->remaining,
2294 : state->src_off,
2295 16 : state->remaining,
2296 : state->dst_off))
2297 : {
2298 8 : return NT_STATUS_MORE_PROCESSING_REQUIRED;
2299 : }
2300 :
2301 448 : if (fsp_is_alternate_stream(state->src_fsp) ||
2302 208 : fsp_is_alternate_stream(state->dst_fsp))
2303 : {
2304 32 : return NT_STATUS_MORE_PROCESSING_REQUIRED;
2305 : }
2306 :
2307 416 : init_strict_lock_struct(state->src_fsp,
2308 208 : state->src_fsp->op->global->open_persistent_id,
2309 208 : state->src_off,
2310 208 : state->remaining,
2311 : READ_LOCK,
2312 208 : lp_posix_cifsu_locktype(state->src_fsp),
2313 : &lck);
2314 :
2315 208 : ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
2316 : state->src_fsp,
2317 : &lck);
2318 208 : if (!ok) {
2319 8 : return NT_STATUS_FILE_LOCK_CONFLICT;
2320 : }
2321 :
2322 200 : ok = change_to_user_and_service_by_fsp(state->dst_fsp);
2323 200 : if (!ok) {
2324 0 : return NT_STATUS_INTERNAL_ERROR;
2325 : }
2326 :
2327 400 : init_strict_lock_struct(state->dst_fsp,
2328 200 : state->dst_fsp->op->global->open_persistent_id,
2329 200 : state->dst_off,
2330 200 : state->remaining,
2331 : WRITE_LOCK,
2332 200 : lp_posix_cifsu_locktype(state->dst_fsp),
2333 : &lck);
2334 :
2335 200 : ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
2336 : state->dst_fsp,
2337 : &lck);
2338 200 : if (!ok) {
2339 8 : return NT_STATUS_FILE_LOCK_CONFLICT;
2340 : }
2341 :
2342 384 : while (state->remaining > 0) {
2343 192 : nwritten = copy_file_range(fsp_get_io_fd(state->src_fsp),
2344 192 : &state->src_off,
2345 192 : fsp_get_io_fd(state->dst_fsp),
2346 192 : &state->dst_off,
2347 192 : state->remaining,
2348 : 0);
2349 192 : if (nwritten == -1) {
2350 0 : DBG_DEBUG("copy_file_range src [%s]:[%jd] dst [%s]:[%jd] "
2351 : "n [%jd] failed: %s\n",
2352 : fsp_str_dbg(state->src_fsp),
2353 : (intmax_t)state->src_off,
2354 : fsp_str_dbg(state->dst_fsp),
2355 : (intmax_t)state->dst_off,
2356 : (intmax_t)state->remaining,
2357 : strerror(errno));
2358 0 : switch (errno) {
2359 0 : case EOPNOTSUPP:
2360 : case ENOSYS:
2361 0 : try_copy_file_range = false;
2362 0 : status = NT_STATUS_MORE_PROCESSING_REQUIRED;
2363 0 : break;
2364 0 : case EXDEV:
2365 0 : status = NT_STATUS_MORE_PROCESSING_REQUIRED;
2366 0 : break;
2367 0 : default:
2368 0 : status = map_nt_error_from_unix(errno);
2369 0 : if (NT_STATUS_EQUAL(
2370 : status,
2371 : NT_STATUS_MORE_PROCESSING_REQUIRED))
2372 : {
2373 : /* Avoid triggering the fallback */
2374 0 : status = NT_STATUS_INTERNAL_ERROR;
2375 : }
2376 0 : break;
2377 : }
2378 0 : return status;
2379 : }
2380 :
2381 192 : if (state->remaining < nwritten) {
2382 0 : DBG_DEBUG("copy_file_range src [%s] dst [%s] "
2383 : "n [%jd] remaining [%jd]\n",
2384 : fsp_str_dbg(state->src_fsp),
2385 : fsp_str_dbg(state->dst_fsp),
2386 : (intmax_t)nwritten,
2387 : (intmax_t)state->remaining);
2388 0 : return NT_STATUS_INTERNAL_ERROR;
2389 : }
2390 :
2391 192 : if (nwritten == 0) {
2392 0 : break;
2393 : }
2394 192 : state->copied += nwritten;
2395 192 : state->remaining -= nwritten;
2396 : }
2397 :
2398 : /*
2399 : * Tell the req cleanup function there's no need to call
2400 : * change_to_user_and_service_by_fsp() on the dst handle.
2401 : */
2402 192 : state->dst_fsp = NULL;
2403 192 : return NT_STATUS_OK;
2404 : }
2405 :
2406 : static void vfswrap_offload_write_read_done(struct tevent_req *subreq);
2407 :
2408 40 : static NTSTATUS vfswrap_offload_write_loop(struct tevent_req *req)
2409 : {
2410 40 : struct vfswrap_offload_write_state *state = tevent_req_data(
2411 : req, struct vfswrap_offload_write_state);
2412 40 : struct tevent_req *subreq = NULL;
2413 0 : struct lock_struct read_lck;
2414 0 : bool ok;
2415 :
2416 : /*
2417 : * This is called under the context of state->src_fsp.
2418 : */
2419 :
2420 40 : state->next_io_size = MIN(state->remaining, talloc_array_length(state->buf));
2421 :
2422 80 : init_strict_lock_struct(state->src_fsp,
2423 40 : state->src_fsp->op->global->open_persistent_id,
2424 40 : state->src_off,
2425 : state->next_io_size,
2426 : READ_LOCK,
2427 40 : lp_posix_cifsu_locktype(state->src_fsp),
2428 : &read_lck);
2429 :
2430 40 : ok = SMB_VFS_STRICT_LOCK_CHECK(state->src_fsp->conn,
2431 : state->src_fsp,
2432 : &read_lck);
2433 40 : if (!ok) {
2434 0 : return NT_STATUS_FILE_LOCK_CONFLICT;
2435 : }
2436 :
2437 40 : subreq = SMB_VFS_PREAD_SEND(state,
2438 : state->src_ev,
2439 : state->src_fsp,
2440 : state->buf,
2441 : state->next_io_size,
2442 : state->src_off);
2443 40 : if (subreq == NULL) {
2444 0 : return NT_STATUS_NO_MEMORY;
2445 : }
2446 40 : tevent_req_set_callback(subreq, vfswrap_offload_write_read_done, req);
2447 :
2448 40 : return NT_STATUS_OK;
2449 : }
2450 :
2451 : static void vfswrap_offload_write_write_done(struct tevent_req *subreq);
2452 :
2453 40 : static void vfswrap_offload_write_read_done(struct tevent_req *subreq)
2454 : {
2455 40 : struct tevent_req *req = tevent_req_callback_data(
2456 : subreq, struct tevent_req);
2457 40 : struct vfswrap_offload_write_state *state = tevent_req_data(
2458 : req, struct vfswrap_offload_write_state);
2459 0 : struct vfs_aio_state aio_state;
2460 0 : struct lock_struct write_lck;
2461 0 : ssize_t nread;
2462 0 : bool ok;
2463 :
2464 40 : nread = SMB_VFS_PREAD_RECV(subreq, &aio_state);
2465 40 : TALLOC_FREE(subreq);
2466 40 : if (nread == -1) {
2467 0 : DBG_ERR("read failed: %s\n", strerror(aio_state.error));
2468 0 : tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
2469 0 : return;
2470 : }
2471 40 : if (nread != state->next_io_size) {
2472 0 : DBG_ERR("Short read, only %zd of %zu\n",
2473 : nread, state->next_io_size);
2474 0 : tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
2475 0 : return;
2476 : }
2477 :
2478 40 : state->src_off += nread;
2479 :
2480 40 : ok = change_to_user_and_service_by_fsp(state->dst_fsp);
2481 40 : if (!ok) {
2482 0 : tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2483 0 : return;
2484 : }
2485 :
2486 80 : init_strict_lock_struct(state->dst_fsp,
2487 40 : state->dst_fsp->op->global->open_persistent_id,
2488 40 : state->dst_off,
2489 : state->next_io_size,
2490 : WRITE_LOCK,
2491 40 : lp_posix_cifsu_locktype(state->dst_fsp),
2492 : &write_lck);
2493 :
2494 40 : ok = SMB_VFS_STRICT_LOCK_CHECK(state->dst_fsp->conn,
2495 : state->dst_fsp,
2496 : &write_lck);
2497 40 : if (!ok) {
2498 0 : tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
2499 0 : return;
2500 : }
2501 :
2502 40 : subreq = SMB_VFS_PWRITE_SEND(state,
2503 : state->dst_ev,
2504 : state->dst_fsp,
2505 : state->buf,
2506 : state->next_io_size,
2507 : state->dst_off);
2508 40 : if (subreq == NULL) {
2509 0 : tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
2510 0 : return;
2511 : }
2512 40 : tevent_req_set_callback(subreq, vfswrap_offload_write_write_done, req);
2513 : }
2514 :
2515 40 : static void vfswrap_offload_write_write_done(struct tevent_req *subreq)
2516 : {
2517 40 : struct tevent_req *req = tevent_req_callback_data(
2518 : subreq, struct tevent_req);
2519 40 : struct vfswrap_offload_write_state *state = tevent_req_data(
2520 : req, struct vfswrap_offload_write_state);
2521 0 : struct vfs_aio_state aio_state;
2522 0 : ssize_t nwritten;
2523 0 : NTSTATUS status;
2524 0 : bool ok;
2525 :
2526 40 : nwritten = SMB_VFS_PWRITE_RECV(subreq, &aio_state);
2527 40 : TALLOC_FREE(subreq);
2528 40 : if (nwritten == -1) {
2529 0 : DBG_ERR("write failed: %s\n", strerror(aio_state.error));
2530 0 : tevent_req_nterror(req, map_nt_error_from_unix(aio_state.error));
2531 0 : return;
2532 : }
2533 40 : if (nwritten != state->next_io_size) {
2534 0 : DBG_ERR("Short write, only %zd of %zu\n", nwritten, state->next_io_size);
2535 0 : tevent_req_nterror(req, NT_STATUS_IO_DEVICE_ERROR);
2536 0 : return;
2537 : }
2538 :
2539 40 : state->dst_off += nwritten;
2540 :
2541 40 : if (state->remaining < nwritten) {
2542 : /* Paranoia check */
2543 0 : tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2544 0 : return;
2545 : }
2546 40 : state->copied += nwritten;
2547 40 : state->remaining -= nwritten;
2548 40 : if (state->remaining == 0) {
2549 40 : tevent_req_done(req);
2550 40 : return;
2551 : }
2552 :
2553 0 : ok = change_to_user_and_service_by_fsp(state->src_fsp);
2554 0 : if (!ok) {
2555 0 : tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2556 0 : return;
2557 : }
2558 :
2559 0 : status = vfswrap_offload_write_loop(req);
2560 0 : if (!NT_STATUS_IS_OK(status)) {
2561 0 : tevent_req_nterror(req, status);
2562 0 : return;
2563 : }
2564 :
2565 0 : return;
2566 : }
2567 :
2568 312 : static NTSTATUS vfswrap_offload_write_recv(struct vfs_handle_struct *handle,
2569 : struct tevent_req *req,
2570 : off_t *copied)
2571 : {
2572 312 : struct vfswrap_offload_write_state *state = tevent_req_data(
2573 : req, struct vfswrap_offload_write_state);
2574 0 : NTSTATUS status;
2575 :
2576 312 : if (tevent_req_is_nterror(req, &status)) {
2577 72 : DBG_DEBUG("copy chunk failed: %s\n", nt_errstr(status));
2578 72 : *copied = 0;
2579 72 : tevent_req_received(req);
2580 72 : return status;
2581 : }
2582 :
2583 240 : *copied = state->copied;
2584 240 : DBG_DEBUG("copy chunk copied %lu\n", (unsigned long)*copied);
2585 240 : tevent_req_received(req);
2586 :
2587 240 : return NT_STATUS_OK;
2588 : }
2589 :
2590 0 : static NTSTATUS vfswrap_fget_compression(struct vfs_handle_struct *handle,
2591 : TALLOC_CTX *mem_ctx,
2592 : struct files_struct *fsp,
2593 : uint16_t *_compression_fmt)
2594 : {
2595 0 : return NT_STATUS_INVALID_DEVICE_REQUEST;
2596 : }
2597 :
2598 0 : static NTSTATUS vfswrap_set_compression(struct vfs_handle_struct *handle,
2599 : TALLOC_CTX *mem_ctx,
2600 : struct files_struct *fsp,
2601 : uint16_t compression_fmt)
2602 : {
2603 0 : return NT_STATUS_INVALID_DEVICE_REQUEST;
2604 : }
2605 :
2606 : /********************************************************************
2607 : Given a stat buffer return the allocated size on disk, taking into
2608 : account sparse files.
2609 : ********************************************************************/
2610 1708905 : static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle,
2611 : struct files_struct *fsp,
2612 : const SMB_STRUCT_STAT *sbuf)
2613 : {
2614 4290 : uint64_t result;
2615 :
2616 1708905 : START_PROFILE(syscall_get_alloc_size);
2617 :
2618 1708905 : if(S_ISDIR(sbuf->st_ex_mode)) {
2619 149460 : result = 0;
2620 149460 : goto out;
2621 : }
2622 :
2623 : #if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
2624 : /* The type of st_blocksize is blkcnt_t which *MUST* be
2625 : signed (according to POSIX) and can be less than 64-bits.
2626 : Ensure when we're converting to 64 bits wide we don't
2627 : sign extend. */
2628 : #if defined(SIZEOF_BLKCNT_T_8)
2629 1559445 : result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_ex_blocks;
2630 : #elif defined(SIZEOF_BLKCNT_T_4)
2631 : {
2632 : uint64_t bs = ((uint64_t)sbuf->st_ex_blocks) & 0xFFFFFFFFLL;
2633 : result = (uint64_t)STAT_ST_BLOCKSIZE * bs;
2634 : }
2635 : #else
2636 : #error SIZEOF_BLKCNT_T_NOT_A_SUPPORTED_VALUE
2637 : #endif
2638 1559445 : if (result == 0) {
2639 : /*
2640 : * Some file systems do not allocate a block for very
2641 : * small files. But for non-empty file should report a
2642 : * positive size.
2643 : */
2644 :
2645 1480965 : uint64_t filesize = get_file_size_stat(sbuf);
2646 1480965 : if (filesize > 0) {
2647 4731 : result = MIN((uint64_t)STAT_ST_BLOCKSIZE, filesize);
2648 : }
2649 : }
2650 : #else
2651 : result = get_file_size_stat(sbuf);
2652 : #endif
2653 :
2654 1559445 : if (fsp && fsp->initial_allocation_size)
2655 2532 : result = MAX(result,fsp->initial_allocation_size);
2656 :
2657 1559445 : result = smb_roundup(handle->conn, result);
2658 :
2659 1708905 : out:
2660 1708905 : END_PROFILE(syscall_get_alloc_size);
2661 1708905 : return result;
2662 : }
2663 :
2664 171353 : static int vfswrap_unlinkat(vfs_handle_struct *handle,
2665 : struct files_struct *dirfsp,
2666 : const struct smb_filename *smb_fname,
2667 : int flags)
2668 : {
2669 171353 : int result = -1;
2670 :
2671 171353 : START_PROFILE(syscall_unlinkat);
2672 :
2673 171353 : SMB_ASSERT(!is_named_stream(smb_fname));
2674 :
2675 171353 : result = unlinkat(fsp_get_pathref_fd(dirfsp),
2676 171353 : smb_fname->base_name,
2677 : flags);
2678 :
2679 171353 : END_PROFILE(syscall_unlinkat);
2680 171353 : return result;
2681 : }
2682 :
2683 20554 : static int vfswrap_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
2684 : {
2685 0 : int result;
2686 :
2687 20554 : START_PROFILE(syscall_fchmod);
2688 :
2689 20554 : if (!fsp->fsp_flags.is_pathref) {
2690 20542 : result = fchmod(fsp_get_io_fd(fsp), mode);
2691 20542 : END_PROFILE(syscall_fchmod);
2692 20542 : return result;
2693 : }
2694 :
2695 12 : if (fsp->fsp_flags.have_proc_fds) {
2696 10 : int fd = fsp_get_pathref_fd(fsp);
2697 0 : struct sys_proc_fd_path_buf buf;
2698 :
2699 10 : result = chmod(sys_proc_fd_path(fd, &buf), mode);
2700 :
2701 10 : END_PROFILE(syscall_fchmod);
2702 10 : return result;
2703 : }
2704 :
2705 : /*
2706 : * This is no longer a handle based call.
2707 : */
2708 2 : result = chmod(fsp->fsp_name->base_name, mode);
2709 :
2710 2 : END_PROFILE(syscall_fchmod);
2711 2 : return result;
2712 : }
2713 :
2714 3392 : static int vfswrap_fchown(vfs_handle_struct *handle, files_struct *fsp, uid_t uid, gid_t gid)
2715 : {
2716 : #ifdef HAVE_FCHOWN
2717 0 : int result;
2718 :
2719 3392 : START_PROFILE(syscall_fchown);
2720 3392 : if (!fsp->fsp_flags.is_pathref) {
2721 2992 : result = fchown(fsp_get_io_fd(fsp), uid, gid);
2722 2992 : END_PROFILE(syscall_fchown);
2723 2992 : return result;
2724 : }
2725 :
2726 400 : if (fsp->fsp_flags.have_proc_fds) {
2727 200 : int fd = fsp_get_pathref_fd(fsp);
2728 0 : struct sys_proc_fd_path_buf buf;
2729 :
2730 200 : result = chown(sys_proc_fd_path(fd, &buf), uid, gid);
2731 :
2732 200 : END_PROFILE(syscall_fchown);
2733 200 : return result;
2734 : }
2735 :
2736 : /*
2737 : * This is no longer a handle based call.
2738 : */
2739 200 : result = chown(fsp->fsp_name->base_name, uid, gid);
2740 200 : END_PROFILE(syscall_fchown);
2741 200 : return result;
2742 : #else
2743 : errno = ENOSYS;
2744 : return -1;
2745 : #endif
2746 : }
2747 :
2748 0 : static int vfswrap_lchown(vfs_handle_struct *handle,
2749 : const struct smb_filename *smb_fname,
2750 : uid_t uid,
2751 : gid_t gid)
2752 : {
2753 0 : int result;
2754 :
2755 0 : START_PROFILE(syscall_lchown);
2756 0 : result = lchown(smb_fname->base_name, uid, gid);
2757 0 : END_PROFILE(syscall_lchown);
2758 0 : return result;
2759 : }
2760 :
2761 1821976 : static int vfswrap_chdir(vfs_handle_struct *handle,
2762 : const struct smb_filename *smb_fname)
2763 : {
2764 4346 : int result;
2765 :
2766 1821976 : START_PROFILE(syscall_chdir);
2767 1821976 : result = chdir(smb_fname->base_name);
2768 1821976 : END_PROFILE(syscall_chdir);
2769 1821976 : return result;
2770 : }
2771 :
2772 104101 : static struct smb_filename *vfswrap_getwd(vfs_handle_struct *handle,
2773 : TALLOC_CTX *ctx)
2774 : {
2775 1530 : char *result;
2776 104101 : struct smb_filename *smb_fname = NULL;
2777 :
2778 104101 : START_PROFILE(syscall_getwd);
2779 104101 : result = sys_getwd();
2780 104101 : END_PROFILE(syscall_getwd);
2781 :
2782 104101 : if (result == NULL) {
2783 0 : return NULL;
2784 : }
2785 104101 : smb_fname = synthetic_smb_fname(ctx,
2786 : result,
2787 : NULL,
2788 : NULL,
2789 : 0,
2790 : 0);
2791 : /*
2792 : * sys_getwd() *always* returns malloced memory.
2793 : * We must free here to avoid leaks:
2794 : * BUG:https://bugzilla.samba.org/show_bug.cgi?id=13372
2795 : */
2796 104101 : SAFE_FREE(result);
2797 104101 : return smb_fname;
2798 : }
2799 :
2800 : /*********************************************************************
2801 : nsec timestamp resolution call. Convert down to whatever the underlying
2802 : system will support.
2803 : **********************************************************************/
2804 :
2805 11064 : static int vfswrap_fntimes(vfs_handle_struct *handle,
2806 : files_struct *fsp,
2807 : struct smb_file_time *ft)
2808 : {
2809 11064 : int result = -1;
2810 115 : struct timespec ts[2];
2811 11064 : struct timespec *times = NULL;
2812 :
2813 11064 : START_PROFILE(syscall_fntimes);
2814 :
2815 11064 : if (fsp_is_alternate_stream(fsp)) {
2816 0 : errno = ENOENT;
2817 0 : goto out;
2818 : }
2819 :
2820 11064 : if (ft != NULL) {
2821 11064 : if (is_omit_timespec(&ft->atime)) {
2822 10165 : ft->atime = fsp->fsp_name->st.st_ex_atime;
2823 : }
2824 :
2825 11064 : if (is_omit_timespec(&ft->mtime)) {
2826 3118 : ft->mtime = fsp->fsp_name->st.st_ex_mtime;
2827 : }
2828 :
2829 11064 : if (!is_omit_timespec(&ft->create_time)) {
2830 844 : set_create_timespec_ea(fsp,
2831 : ft->create_time);
2832 : }
2833 :
2834 11064 : if ((timespec_compare(&ft->atime,
2835 21268 : &fsp->fsp_name->st.st_ex_atime) == 0) &&
2836 10204 : (timespec_compare(&ft->mtime,
2837 10204 : &fsp->fsp_name->st.st_ex_mtime) == 0)) {
2838 3744 : result = 0;
2839 3744 : goto out;
2840 : }
2841 :
2842 7320 : ts[0] = ft->atime;
2843 7320 : ts[1] = ft->mtime;
2844 7320 : times = ts;
2845 : } else {
2846 0 : times = NULL;
2847 : }
2848 :
2849 7320 : if (!fsp->fsp_flags.is_pathref) {
2850 5087 : result = futimens(fsp_get_io_fd(fsp), times);
2851 5087 : goto out;
2852 : }
2853 :
2854 2233 : if (fsp->fsp_flags.have_proc_fds) {
2855 1148 : int fd = fsp_get_pathref_fd(fsp);
2856 1 : struct sys_proc_fd_path_buf buf;
2857 :
2858 1148 : result = utimensat(AT_FDCWD,
2859 1148 : sys_proc_fd_path(fd, &buf),
2860 : times,
2861 : 0);
2862 :
2863 1148 : goto out;
2864 : }
2865 :
2866 : /*
2867 : * The fd is a pathref (opened with O_PATH) and there isn't fd to
2868 : * path translation mechanism. Fallback to path based call.
2869 : */
2870 1085 : result = utimensat(AT_FDCWD, fsp->fsp_name->base_name, times, 0);
2871 :
2872 11064 : out:
2873 11064 : END_PROFILE(syscall_fntimes);
2874 :
2875 11064 : return result;
2876 : }
2877 :
2878 :
2879 : /*********************************************************************
2880 : A version of ftruncate that will write the space on disk if strict
2881 : allocate is set.
2882 : **********************************************************************/
2883 :
2884 0 : static int strict_allocate_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2885 : {
2886 0 : off_t space_to_write;
2887 0 : uint64_t space_avail;
2888 0 : uint64_t bsize,dfree,dsize;
2889 0 : int ret;
2890 0 : NTSTATUS status;
2891 0 : SMB_STRUCT_STAT *pst;
2892 0 : bool ok;
2893 :
2894 0 : ok = vfs_valid_pwrite_range(len, 0);
2895 0 : if (!ok) {
2896 0 : errno = EINVAL;
2897 0 : return -1;
2898 : }
2899 :
2900 0 : status = vfs_stat_fsp(fsp);
2901 0 : if (!NT_STATUS_IS_OK(status)) {
2902 0 : return -1;
2903 : }
2904 0 : pst = &fsp->fsp_name->st;
2905 :
2906 : #ifdef S_ISFIFO
2907 0 : if (S_ISFIFO(pst->st_ex_mode))
2908 0 : return 0;
2909 : #endif
2910 :
2911 0 : if (pst->st_ex_size == len)
2912 0 : return 0;
2913 :
2914 : /* Shrink - just ftruncate. */
2915 0 : if (pst->st_ex_size > len)
2916 0 : return ftruncate(fsp_get_io_fd(fsp), len);
2917 :
2918 0 : space_to_write = len - pst->st_ex_size;
2919 :
2920 : /* for allocation try fallocate first. This can fail on some
2921 : platforms e.g. when the filesystem doesn't support it and no
2922 : emulation is being done by the libc (like on AIX with JFS1). In that
2923 : case we do our own emulation. fallocate implementations can
2924 : return ENOTSUP or EINVAL in cases like that. */
2925 0 : ret = SMB_VFS_FALLOCATE(fsp, 0, pst->st_ex_size, space_to_write);
2926 0 : if (ret == -1 && errno == ENOSPC) {
2927 0 : return -1;
2928 : }
2929 0 : if (ret == 0) {
2930 0 : return 0;
2931 : }
2932 0 : DBG_DEBUG("strict_allocate_ftruncate: SMB_VFS_FALLOCATE failed with "
2933 : "error %d. Falling back to slow manual allocation\n", errno);
2934 :
2935 : /* available disk space is enough or not? */
2936 0 : space_avail =
2937 0 : get_dfree_info(fsp->conn, fsp->fsp_name, &bsize, &dfree, &dsize);
2938 : /* space_avail is 1k blocks */
2939 0 : if (space_avail == (uint64_t)-1 ||
2940 0 : ((uint64_t)space_to_write/1024 > space_avail) ) {
2941 0 : errno = ENOSPC;
2942 0 : return -1;
2943 : }
2944 :
2945 : /* Write out the real space on disk. */
2946 0 : ret = vfs_slow_fallocate(fsp, pst->st_ex_size, space_to_write);
2947 0 : if (ret != 0) {
2948 0 : return -1;
2949 : }
2950 :
2951 0 : return 0;
2952 : }
2953 :
2954 1139 : static int vfswrap_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len)
2955 : {
2956 1139 : int result = -1;
2957 55 : SMB_STRUCT_STAT *pst;
2958 55 : NTSTATUS status;
2959 1139 : char c = 0;
2960 :
2961 1139 : START_PROFILE(syscall_ftruncate);
2962 :
2963 1139 : if (lp_strict_allocate(SNUM(fsp->conn)) && !fsp->fsp_flags.is_sparse) {
2964 0 : result = strict_allocate_ftruncate(handle, fsp, len);
2965 0 : END_PROFILE(syscall_ftruncate);
2966 0 : return result;
2967 : }
2968 :
2969 : /* we used to just check HAVE_FTRUNCATE_EXTEND and only use
2970 : ftruncate if the system supports it. Then I discovered that
2971 : you can have some filesystems that support ftruncate
2972 : expansion and some that don't! On Linux fat can't do
2973 : ftruncate extend but ext2 can. */
2974 :
2975 1139 : result = ftruncate(fsp_get_io_fd(fsp), len);
2976 :
2977 : /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot
2978 : extend a file with ftruncate. Provide alternate implementation
2979 : for this */
2980 :
2981 : /* Do an fstat to see if the file is longer than the requested
2982 : size in which case the ftruncate above should have
2983 : succeeded or shorter, in which case seek to len - 1 and
2984 : write 1 byte of zero */
2985 1139 : status = vfs_stat_fsp(fsp);
2986 1139 : if (!NT_STATUS_IS_OK(status)) {
2987 0 : goto done;
2988 : }
2989 :
2990 : /* We need to update the files_struct after successful ftruncate */
2991 1139 : if (result == 0) {
2992 1139 : goto done;
2993 : }
2994 :
2995 0 : pst = &fsp->fsp_name->st;
2996 :
2997 : #ifdef S_ISFIFO
2998 0 : if (S_ISFIFO(pst->st_ex_mode)) {
2999 0 : result = 0;
3000 0 : goto done;
3001 : }
3002 : #endif
3003 :
3004 0 : if (pst->st_ex_size == len) {
3005 0 : result = 0;
3006 0 : goto done;
3007 : }
3008 :
3009 0 : if (pst->st_ex_size > len) {
3010 : /* the ftruncate should have worked */
3011 0 : goto done;
3012 : }
3013 :
3014 0 : if (SMB_VFS_PWRITE(fsp, &c, 1, len-1)!=1) {
3015 0 : goto done;
3016 : }
3017 :
3018 0 : result = 0;
3019 :
3020 1139 : done:
3021 :
3022 1139 : END_PROFILE(syscall_ftruncate);
3023 1084 : return result;
3024 : }
3025 :
3026 186 : static int vfswrap_fallocate(vfs_handle_struct *handle,
3027 : files_struct *fsp,
3028 : uint32_t mode,
3029 : off_t offset,
3030 : off_t len)
3031 : {
3032 0 : int result;
3033 :
3034 186 : START_PROFILE(syscall_fallocate);
3035 186 : if (mode == 0) {
3036 0 : result = sys_posix_fallocate(fsp_get_io_fd(fsp), offset, len);
3037 : /*
3038 : * posix_fallocate returns 0 on success, errno on error
3039 : * and doesn't set errno. Make it behave like fallocate()
3040 : * which returns -1, and sets errno on failure.
3041 : */
3042 0 : if (result != 0) {
3043 0 : errno = result;
3044 0 : result = -1;
3045 : }
3046 : } else {
3047 : /* sys_fallocate handles filtering of unsupported mode flags */
3048 186 : result = sys_fallocate(fsp_get_io_fd(fsp), mode, offset, len);
3049 : }
3050 186 : END_PROFILE(syscall_fallocate);
3051 186 : return result;
3052 : }
3053 :
3054 5680 : static bool vfswrap_lock(vfs_handle_struct *handle, files_struct *fsp, int op, off_t offset, off_t count, int type)
3055 : {
3056 34 : bool result;
3057 :
3058 5680 : START_PROFILE(syscall_fcntl_lock);
3059 :
3060 5680 : if (fsp->fsp_flags.use_ofd_locks) {
3061 5680 : op = map_process_lock_to_ofd_lock(op);
3062 : }
3063 :
3064 5680 : result = fcntl_lock(fsp_get_io_fd(fsp), op, offset, count, type);
3065 5680 : END_PROFILE(syscall_fcntl_lock);
3066 5680 : return result;
3067 : }
3068 :
3069 0 : static int vfswrap_filesystem_sharemode(vfs_handle_struct *handle,
3070 : files_struct *fsp,
3071 : uint32_t share_access,
3072 : uint32_t access_mask)
3073 : {
3074 0 : errno = ENOTSUP;
3075 0 : return -1;
3076 : }
3077 :
3078 382752 : static int vfswrap_fcntl(vfs_handle_struct *handle, files_struct *fsp, int cmd,
3079 : va_list cmd_arg)
3080 : {
3081 898 : void *argp;
3082 898 : va_list dup_cmd_arg;
3083 898 : int result;
3084 898 : int val;
3085 :
3086 382752 : START_PROFILE(syscall_fcntl);
3087 :
3088 382752 : va_copy(dup_cmd_arg, cmd_arg);
3089 :
3090 382752 : switch(cmd) {
3091 0 : case F_SETLK:
3092 : case F_SETLKW:
3093 : case F_GETLK:
3094 : #if defined(HAVE_OFD_LOCKS)
3095 : case F_OFD_SETLK:
3096 : case F_OFD_SETLKW:
3097 : case F_OFD_GETLK:
3098 : #endif
3099 : #if defined(HAVE_F_OWNER_EX)
3100 : case F_GETOWN_EX:
3101 : case F_SETOWN_EX:
3102 : #endif
3103 : #if defined(HAVE_RW_HINTS)
3104 : case F_GET_RW_HINT:
3105 : case F_SET_RW_HINT:
3106 : case F_GET_FILE_RW_HINT:
3107 : case F_SET_FILE_RW_HINT:
3108 : #endif
3109 0 : argp = va_arg(dup_cmd_arg, void *);
3110 0 : result = sys_fcntl_ptr(fsp_get_io_fd(fsp), cmd, argp);
3111 0 : break;
3112 382752 : default:
3113 382752 : val = va_arg(dup_cmd_arg, int);
3114 382752 : result = sys_fcntl_int(fsp_get_io_fd(fsp), cmd, val);
3115 : }
3116 :
3117 382752 : va_end(dup_cmd_arg);
3118 :
3119 382752 : END_PROFILE(syscall_fcntl);
3120 382752 : return result;
3121 : }
3122 :
3123 205679 : static bool vfswrap_getlock(vfs_handle_struct *handle, files_struct *fsp, off_t *poffset, off_t *pcount, int *ptype, pid_t *ppid)
3124 : {
3125 113 : bool result;
3126 205679 : int op = F_GETLK;
3127 :
3128 205679 : START_PROFILE(syscall_fcntl_getlock);
3129 :
3130 205679 : if (fsp->fsp_flags.use_ofd_locks) {
3131 205679 : op = map_process_lock_to_ofd_lock(op);
3132 : }
3133 :
3134 205679 : result = fcntl_getlock(fsp_get_io_fd(fsp), op, poffset, pcount, ptype, ppid);
3135 205679 : END_PROFILE(syscall_fcntl_getlock);
3136 205679 : return result;
3137 : }
3138 :
3139 12 : static int vfswrap_linux_setlease(vfs_handle_struct *handle, files_struct *fsp,
3140 : int leasetype)
3141 : {
3142 12 : int result = -1;
3143 :
3144 12 : START_PROFILE(syscall_linux_setlease);
3145 :
3146 12 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3147 :
3148 : #ifdef HAVE_KERNEL_OPLOCKS_LINUX
3149 12 : result = linux_setlease(fsp_get_io_fd(fsp), leasetype);
3150 : #else
3151 : errno = ENOSYS;
3152 : #endif
3153 12 : END_PROFILE(syscall_linux_setlease);
3154 12 : return result;
3155 : }
3156 :
3157 128 : static int vfswrap_symlinkat(vfs_handle_struct *handle,
3158 : const struct smb_filename *link_target,
3159 : struct files_struct *dirfsp,
3160 : const struct smb_filename *new_smb_fname)
3161 : {
3162 0 : int result;
3163 :
3164 128 : START_PROFILE(syscall_symlinkat);
3165 :
3166 128 : SMB_ASSERT(!is_named_stream(new_smb_fname));
3167 :
3168 128 : result = symlinkat(link_target->base_name,
3169 : fsp_get_pathref_fd(dirfsp),
3170 128 : new_smb_fname->base_name);
3171 128 : END_PROFILE(syscall_symlinkat);
3172 128 : return result;
3173 : }
3174 :
3175 73983 : static int vfswrap_readlinkat(vfs_handle_struct *handle,
3176 : const struct files_struct *dirfsp,
3177 : const struct smb_filename *smb_fname,
3178 : char *buf,
3179 : size_t bufsiz)
3180 : {
3181 0 : int result;
3182 :
3183 73983 : START_PROFILE(syscall_readlinkat);
3184 :
3185 73983 : SMB_ASSERT(!is_named_stream(smb_fname));
3186 :
3187 73983 : result = readlinkat(fsp_get_pathref_fd(dirfsp),
3188 73983 : smb_fname->base_name,
3189 : buf,
3190 : bufsiz);
3191 :
3192 73983 : END_PROFILE(syscall_readlinkat);
3193 73983 : return result;
3194 : }
3195 :
3196 43 : static int vfswrap_linkat(vfs_handle_struct *handle,
3197 : files_struct *srcfsp,
3198 : const struct smb_filename *old_smb_fname,
3199 : files_struct *dstfsp,
3200 : const struct smb_filename *new_smb_fname,
3201 : int flags)
3202 : {
3203 1 : int result;
3204 :
3205 43 : START_PROFILE(syscall_linkat);
3206 :
3207 43 : SMB_ASSERT(!is_named_stream(old_smb_fname));
3208 43 : SMB_ASSERT(!is_named_stream(new_smb_fname));
3209 :
3210 43 : result = linkat(fsp_get_pathref_fd(srcfsp),
3211 43 : old_smb_fname->base_name,
3212 : fsp_get_pathref_fd(dstfsp),
3213 43 : new_smb_fname->base_name,
3214 : flags);
3215 :
3216 43 : END_PROFILE(syscall_linkat);
3217 43 : return result;
3218 : }
3219 :
3220 2 : static int vfswrap_mknodat(vfs_handle_struct *handle,
3221 : files_struct *dirfsp,
3222 : const struct smb_filename *smb_fname,
3223 : mode_t mode,
3224 : SMB_DEV_T dev)
3225 : {
3226 0 : int result;
3227 :
3228 2 : START_PROFILE(syscall_mknodat);
3229 :
3230 2 : SMB_ASSERT(!is_named_stream(smb_fname));
3231 :
3232 2 : result = sys_mknodat(fsp_get_pathref_fd(dirfsp),
3233 2 : smb_fname->base_name,
3234 : mode,
3235 : dev);
3236 :
3237 2 : END_PROFILE(syscall_mknodat);
3238 2 : return result;
3239 : }
3240 :
3241 3526772 : static struct smb_filename *vfswrap_realpath(vfs_handle_struct *handle,
3242 : TALLOC_CTX *ctx,
3243 : const struct smb_filename *smb_fname)
3244 : {
3245 12206 : char *result;
3246 3526772 : struct smb_filename *result_fname = NULL;
3247 :
3248 3526772 : START_PROFILE(syscall_realpath);
3249 3526772 : result = sys_realpath(smb_fname->base_name);
3250 3526772 : END_PROFILE(syscall_realpath);
3251 3526772 : if (result) {
3252 3526714 : result_fname = synthetic_smb_fname(ctx,
3253 : result,
3254 : NULL,
3255 : NULL,
3256 : 0,
3257 : 0);
3258 3526714 : SAFE_FREE(result);
3259 : }
3260 3526772 : return result_fname;
3261 : }
3262 :
3263 0 : static int vfswrap_fchflags(vfs_handle_struct *handle,
3264 : struct files_struct *fsp,
3265 : unsigned int flags)
3266 : {
3267 : #ifdef HAVE_FCHFLAGS
3268 : int fd = fsp_get_pathref_fd(fsp);
3269 :
3270 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3271 :
3272 : if (!fsp->fsp_flags.is_pathref) {
3273 : return fchflags(fd, flags);
3274 : }
3275 :
3276 : if (fsp->fsp_flags.have_proc_fds) {
3277 : struct sys_proc_fd_path_buf buf;
3278 :
3279 : return chflags(sys_proc_fd_path(fd, &buf), flags);
3280 : }
3281 :
3282 : /*
3283 : * This is no longer a handle based call.
3284 : */
3285 : return chflags(fsp->fsp_name->base_name, flags);
3286 : #else
3287 0 : errno = ENOSYS;
3288 0 : return -1;
3289 : #endif
3290 : }
3291 :
3292 35158637 : static struct file_id vfswrap_file_id_create(struct vfs_handle_struct *handle,
3293 : const SMB_STRUCT_STAT *sbuf)
3294 : {
3295 127576 : struct file_id key;
3296 :
3297 : /* the ZERO_STRUCT ensures padding doesn't break using the key as a
3298 : * blob */
3299 35158637 : ZERO_STRUCT(key);
3300 :
3301 35158637 : key.devid = sbuf->st_ex_dev;
3302 35158637 : key.inode = sbuf->st_ex_ino;
3303 : /* key.extid is unused by default. */
3304 :
3305 35158637 : return key;
3306 : }
3307 :
3308 922711 : static uint64_t vfswrap_fs_file_id(struct vfs_handle_struct *handle,
3309 : const SMB_STRUCT_STAT *psbuf)
3310 : {
3311 970 : uint64_t file_id;
3312 :
3313 922711 : if (handle->conn->base_share_dev == psbuf->st_ex_dev) {
3314 921118 : return (uint64_t)psbuf->st_ex_ino;
3315 : }
3316 :
3317 : /* FileIDLow */
3318 1593 : file_id = ((psbuf->st_ex_ino) & UINT32_MAX);
3319 :
3320 : /* FileIDHigh */
3321 1593 : file_id |= ((uint64_t)((psbuf->st_ex_dev) & UINT32_MAX)) << 32;
3322 :
3323 1593 : return file_id;
3324 : }
3325 :
3326 317243 : static NTSTATUS vfswrap_fstreaminfo(vfs_handle_struct *handle,
3327 : struct files_struct *fsp,
3328 : TALLOC_CTX *mem_ctx,
3329 : unsigned int *pnum_streams,
3330 : struct stream_struct **pstreams)
3331 : {
3332 317243 : struct stream_struct *tmp_streams = NULL;
3333 317243 : unsigned int num_streams = *pnum_streams;
3334 317243 : struct stream_struct *streams = *pstreams;
3335 840 : NTSTATUS status;
3336 :
3337 317243 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3338 :
3339 317243 : if (fsp->fsp_flags.is_directory) {
3340 : /*
3341 : * No default streams on directories
3342 : */
3343 25426 : goto done;
3344 : }
3345 291817 : status = vfs_stat_fsp(fsp);
3346 291817 : if (!NT_STATUS_IS_OK(status)) {
3347 0 : return status;
3348 : }
3349 :
3350 291817 : if (num_streams + 1 < 1) {
3351 : /* Integer wrap. */
3352 0 : return NT_STATUS_INVALID_PARAMETER;
3353 : }
3354 :
3355 291817 : tmp_streams = talloc_realloc(mem_ctx,
3356 : streams,
3357 : struct stream_struct,
3358 : num_streams + 1);
3359 291817 : if (tmp_streams == NULL) {
3360 0 : return NT_STATUS_NO_MEMORY;
3361 : }
3362 291817 : tmp_streams[num_streams].name = talloc_strdup(tmp_streams, "::$DATA");
3363 291817 : if (tmp_streams[num_streams].name == NULL) {
3364 0 : return NT_STATUS_NO_MEMORY;
3365 : }
3366 291817 : tmp_streams[num_streams].size = fsp->fsp_name->st.st_ex_size;
3367 291817 : tmp_streams[num_streams].alloc_size = SMB_VFS_GET_ALLOC_SIZE(
3368 : handle->conn,
3369 : fsp,
3370 : &fsp->fsp_name->st);
3371 291817 : num_streams += 1;
3372 :
3373 291817 : *pnum_streams = num_streams;
3374 291817 : *pstreams = tmp_streams;
3375 317243 : done:
3376 317243 : return NT_STATUS_OK;
3377 : }
3378 :
3379 273402 : static NTSTATUS vfswrap_get_real_filename_at(
3380 : struct vfs_handle_struct *handle,
3381 : struct files_struct *dirfsp,
3382 : const char *name,
3383 : TALLOC_CTX *mem_ctx,
3384 : char **found_name)
3385 : {
3386 : /*
3387 : * Don't fall back to get_real_filename so callers can differentiate
3388 : * between a full directory scan and an actual case-insensitive stat.
3389 : */
3390 273402 : return NT_STATUS_NOT_SUPPORTED;
3391 : }
3392 :
3393 3896120 : static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
3394 : const struct files_struct *dirfsp,
3395 : const struct smb_filename *smb_fname)
3396 : {
3397 3896120 : return handle->conn->connectpath;
3398 : }
3399 :
3400 5807 : static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
3401 : struct byte_range_lock *br_lck,
3402 : struct lock_struct *plock)
3403 : {
3404 5807 : SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
3405 :
3406 : /* Note: blr is not used in the default implementation. */
3407 5807 : return brl_lock_windows_default(br_lck, plock);
3408 : }
3409 :
3410 2889 : static bool vfswrap_brl_unlock_windows(struct vfs_handle_struct *handle,
3411 : struct byte_range_lock *br_lck,
3412 : const struct lock_struct *plock)
3413 : {
3414 2889 : SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
3415 :
3416 2889 : return brl_unlock_windows_default(br_lck, plock);
3417 : }
3418 :
3419 203977 : static bool vfswrap_strict_lock_check(struct vfs_handle_struct *handle,
3420 : files_struct *fsp,
3421 : struct lock_struct *plock)
3422 : {
3423 203977 : SMB_ASSERT(plock->lock_type == READ_LOCK ||
3424 : plock->lock_type == WRITE_LOCK);
3425 :
3426 203977 : return strict_lock_check_default(fsp, plock);
3427 : }
3428 :
3429 : /* NT ACL operations. */
3430 :
3431 421152 : static NTSTATUS vfswrap_fget_nt_acl(vfs_handle_struct *handle,
3432 : files_struct *fsp,
3433 : uint32_t security_info,
3434 : TALLOC_CTX *mem_ctx,
3435 : struct security_descriptor **ppdesc)
3436 : {
3437 1655 : NTSTATUS result;
3438 :
3439 421152 : START_PROFILE(fget_nt_acl);
3440 :
3441 421152 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3442 :
3443 421152 : result = posix_fget_nt_acl(fsp, security_info,
3444 : mem_ctx, ppdesc);
3445 421152 : END_PROFILE(fget_nt_acl);
3446 421152 : return result;
3447 : }
3448 :
3449 157695 : static NTSTATUS vfswrap_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32_t security_info_sent, const struct security_descriptor *psd)
3450 : {
3451 452 : NTSTATUS result;
3452 :
3453 157695 : START_PROFILE(fset_nt_acl);
3454 :
3455 157695 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3456 :
3457 157695 : result = set_nt_acl(fsp, security_info_sent, psd);
3458 157695 : END_PROFILE(fset_nt_acl);
3459 157695 : return result;
3460 : }
3461 :
3462 0 : static NTSTATUS vfswrap_audit_file(struct vfs_handle_struct *handle,
3463 : struct smb_filename *file,
3464 : struct security_acl *sacl,
3465 : uint32_t access_requested,
3466 : uint32_t access_denied)
3467 : {
3468 0 : return NT_STATUS_OK; /* Nothing to do here ... */
3469 : }
3470 :
3471 148915 : static SMB_ACL_T vfswrap_sys_acl_get_fd(vfs_handle_struct *handle,
3472 : files_struct *fsp,
3473 : SMB_ACL_TYPE_T type,
3474 : TALLOC_CTX *mem_ctx)
3475 : {
3476 148915 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3477 :
3478 148915 : return sys_acl_get_fd(handle, fsp, type, mem_ctx);
3479 : }
3480 :
3481 1610 : static int vfswrap_sys_acl_set_fd(vfs_handle_struct *handle,
3482 : files_struct *fsp,
3483 : SMB_ACL_TYPE_T type,
3484 : SMB_ACL_T theacl)
3485 : {
3486 1610 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3487 :
3488 1610 : return sys_acl_set_fd(handle, fsp, type, theacl);
3489 : }
3490 :
3491 0 : static int vfswrap_sys_acl_delete_def_fd(vfs_handle_struct *handle,
3492 : files_struct *fsp)
3493 : {
3494 0 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3495 :
3496 0 : return sys_acl_delete_def_fd(handle, fsp);
3497 : }
3498 :
3499 : /****************************************************************
3500 : Extended attribute operations.
3501 : *****************************************************************/
3502 :
3503 82300 : static ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle,
3504 : struct files_struct *fsp,
3505 : const char *name,
3506 : void *value,
3507 : size_t size)
3508 : {
3509 82300 : int fd = fsp_get_pathref_fd(fsp);
3510 :
3511 82300 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3512 :
3513 82300 : if (!fsp->fsp_flags.is_pathref) {
3514 4161 : return fgetxattr(fd, name, value, size);
3515 : }
3516 :
3517 78139 : if (fsp->fsp_flags.have_proc_fds) {
3518 0 : struct sys_proc_fd_path_buf buf;
3519 :
3520 38355 : return getxattr(sys_proc_fd_path(fd, &buf), name, value, size);
3521 : }
3522 :
3523 : /*
3524 : * This is no longer a handle based call.
3525 : */
3526 39784 : return getxattr(fsp->fsp_name->base_name, name, value, size);
3527 : }
3528 :
3529 : struct vfswrap_getxattrat_state {
3530 : struct tevent_context *ev;
3531 : struct vfs_handle_struct *handle;
3532 : files_struct *dir_fsp;
3533 : const struct smb_filename *smb_fname;
3534 :
3535 : /*
3536 : * The following variables are talloced off "state" which is protected
3537 : * by a destructor and thus are guaranteed to be safe to be used in the
3538 : * job function in the worker thread.
3539 : */
3540 : char *name;
3541 : const char *xattr_name;
3542 : uint8_t *xattr_value;
3543 : struct security_unix_token *token;
3544 :
3545 : ssize_t xattr_size;
3546 : struct vfs_aio_state vfs_aio_state;
3547 : SMBPROFILE_BYTES_ASYNC_STATE(profile_bytes);
3548 : };
3549 :
3550 0 : static int vfswrap_getxattrat_state_destructor(
3551 : struct vfswrap_getxattrat_state *state)
3552 : {
3553 0 : return -1;
3554 : }
3555 :
3556 : static void vfswrap_getxattrat_do_sync(struct tevent_req *req);
3557 : static void vfswrap_getxattrat_do_async(void *private_data);
3558 : static void vfswrap_getxattrat_done(struct tevent_req *subreq);
3559 :
3560 10077 : static struct tevent_req *vfswrap_getxattrat_send(
3561 : TALLOC_CTX *mem_ctx,
3562 : struct tevent_context *ev,
3563 : struct vfs_handle_struct *handle,
3564 : files_struct *dir_fsp,
3565 : const struct smb_filename *smb_fname,
3566 : const char *xattr_name,
3567 : size_t alloc_hint)
3568 : {
3569 10077 : struct tevent_req *req = NULL;
3570 10077 : struct tevent_req *subreq = NULL;
3571 10077 : struct vfswrap_getxattrat_state *state = NULL;
3572 10077 : size_t max_threads = 0;
3573 10077 : bool have_per_thread_cwd = false;
3574 10077 : bool have_per_thread_creds = false;
3575 10077 : bool do_async = false;
3576 :
3577 10077 : SMB_ASSERT(!is_named_stream(smb_fname));
3578 :
3579 10077 : req = tevent_req_create(mem_ctx, &state,
3580 : struct vfswrap_getxattrat_state);
3581 10077 : if (req == NULL) {
3582 0 : return NULL;
3583 : }
3584 10077 : *state = (struct vfswrap_getxattrat_state) {
3585 : .ev = ev,
3586 : .handle = handle,
3587 : .dir_fsp = dir_fsp,
3588 : .smb_fname = smb_fname,
3589 : };
3590 :
3591 10077 : max_threads = pthreadpool_tevent_max_threads(dir_fsp->conn->sconn->pool);
3592 10077 : if (max_threads >= 1) {
3593 : /*
3594 : * We need a non sync threadpool!
3595 : */
3596 10077 : have_per_thread_cwd = per_thread_cwd_supported();
3597 : }
3598 : #ifdef HAVE_LINUX_THREAD_CREDENTIALS
3599 10077 : have_per_thread_creds = true;
3600 : #endif
3601 10077 : if (have_per_thread_cwd && have_per_thread_creds) {
3602 10077 : do_async = true;
3603 : }
3604 :
3605 10077 : SMBPROFILE_BYTES_ASYNC_START(syscall_asys_getxattrat, profile_p,
3606 : state->profile_bytes, 0);
3607 :
3608 10077 : if (fsp_get_pathref_fd(dir_fsp) == -1) {
3609 0 : DBG_ERR("Need a valid directory fd\n");
3610 0 : tevent_req_error(req, EINVAL);
3611 0 : return tevent_req_post(req, ev);
3612 : }
3613 :
3614 10077 : if (alloc_hint > 0) {
3615 10077 : state->xattr_value = talloc_zero_array(state,
3616 : uint8_t,
3617 : alloc_hint);
3618 10077 : if (tevent_req_nomem(state->xattr_value, req)) {
3619 0 : return tevent_req_post(req, ev);
3620 : }
3621 : }
3622 :
3623 10077 : if (!do_async) {
3624 0 : vfswrap_getxattrat_do_sync(req);
3625 0 : return tevent_req_post(req, ev);
3626 : }
3627 :
3628 : /*
3629 : * Now allocate all parameters from a memory context that won't go away
3630 : * no matter what. These parameters will get used in threads and we
3631 : * can't reliably cancel threads, so all buffers passed to the threads
3632 : * must not be freed before all referencing threads terminate.
3633 : */
3634 :
3635 10077 : state->name = talloc_strdup(state, smb_fname->base_name);
3636 10077 : if (tevent_req_nomem(state->name, req)) {
3637 0 : return tevent_req_post(req, ev);
3638 : }
3639 :
3640 10077 : state->xattr_name = talloc_strdup(state, xattr_name);
3641 10077 : if (tevent_req_nomem(state->xattr_name, req)) {
3642 0 : return tevent_req_post(req, ev);
3643 : }
3644 :
3645 : /*
3646 : * This is a hot codepath so at first glance one might think we should
3647 : * somehow optimize away the token allocation and do a
3648 : * talloc_reference() or similar black magic instead. But due to the
3649 : * talloc_stackframe pool per SMB2 request this should be a simple copy
3650 : * without a malloc in most cases.
3651 : */
3652 10077 : if (geteuid() == sec_initial_uid()) {
3653 10075 : state->token = root_unix_token(state);
3654 : } else {
3655 2 : state->token = copy_unix_token(
3656 : state,
3657 2 : dir_fsp->conn->session_info->unix_token);
3658 : }
3659 10077 : if (tevent_req_nomem(state->token, req)) {
3660 0 : return tevent_req_post(req, ev);
3661 : }
3662 :
3663 10077 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
3664 :
3665 10077 : subreq = pthreadpool_tevent_job_send(
3666 : state,
3667 : ev,
3668 10077 : dir_fsp->conn->sconn->pool,
3669 : vfswrap_getxattrat_do_async,
3670 : state);
3671 10077 : if (tevent_req_nomem(subreq, req)) {
3672 0 : return tevent_req_post(req, ev);
3673 : }
3674 10077 : tevent_req_set_callback(subreq, vfswrap_getxattrat_done, req);
3675 :
3676 10077 : talloc_set_destructor(state, vfswrap_getxattrat_state_destructor);
3677 :
3678 10077 : return req;
3679 : }
3680 :
3681 0 : static void vfswrap_getxattrat_do_sync(struct tevent_req *req)
3682 : {
3683 0 : struct vfswrap_getxattrat_state *state = tevent_req_data(
3684 : req, struct vfswrap_getxattrat_state);
3685 :
3686 0 : state->xattr_size = vfswrap_fgetxattr(state->handle,
3687 0 : state->smb_fname->fsp,
3688 : state->xattr_name,
3689 0 : state->xattr_value,
3690 0 : talloc_array_length(state->xattr_value));
3691 0 : if (state->xattr_size == -1) {
3692 0 : tevent_req_error(req, errno);
3693 0 : return;
3694 : }
3695 :
3696 0 : tevent_req_done(req);
3697 0 : return;
3698 : }
3699 :
3700 10077 : static void vfswrap_getxattrat_do_async(void *private_data)
3701 : {
3702 10077 : struct vfswrap_getxattrat_state *state = talloc_get_type_abort(
3703 : private_data, struct vfswrap_getxattrat_state);
3704 0 : struct timespec start_time;
3705 0 : struct timespec end_time;
3706 0 : int ret;
3707 :
3708 10077 : PROFILE_TIMESTAMP(&start_time);
3709 10077 : SMBPROFILE_BYTES_ASYNC_SET_BUSY(state->profile_bytes);
3710 :
3711 : /*
3712 : * Here we simulate a getxattrat()
3713 : * call using fchdir();getxattr()
3714 : */
3715 :
3716 10077 : per_thread_cwd_activate();
3717 :
3718 : /* Become the correct credential on this thread. */
3719 10077 : ret = set_thread_credentials(state->token->uid,
3720 10077 : state->token->gid,
3721 10077 : (size_t)state->token->ngroups,
3722 10077 : state->token->groups);
3723 10077 : if (ret != 0) {
3724 0 : state->xattr_size = -1;
3725 0 : state->vfs_aio_state.error = errno;
3726 0 : goto end_profile;
3727 : }
3728 :
3729 20154 : state->xattr_size = vfswrap_fgetxattr(state->handle,
3730 10077 : state->smb_fname->fsp,
3731 : state->xattr_name,
3732 10077 : state->xattr_value,
3733 10077 : talloc_array_length(state->xattr_value));
3734 10077 : if (state->xattr_size == -1) {
3735 68 : state->vfs_aio_state.error = errno;
3736 : }
3737 :
3738 10009 : end_profile:
3739 10077 : PROFILE_TIMESTAMP(&end_time);
3740 10077 : state->vfs_aio_state.duration = nsec_time_diff(&end_time, &start_time);
3741 10077 : SMBPROFILE_BYTES_ASYNC_SET_IDLE(state->profile_bytes);
3742 10077 : }
3743 :
3744 10077 : static void vfswrap_getxattrat_done(struct tevent_req *subreq)
3745 : {
3746 10077 : struct tevent_req *req = tevent_req_callback_data(
3747 : subreq, struct tevent_req);
3748 10077 : struct vfswrap_getxattrat_state *state = tevent_req_data(
3749 : req, struct vfswrap_getxattrat_state);
3750 0 : int ret;
3751 0 : bool ok;
3752 :
3753 : /*
3754 : * Make sure we run as the user again
3755 : */
3756 10077 : ok = change_to_user_and_service_by_fsp(state->dir_fsp);
3757 10077 : SMB_ASSERT(ok);
3758 :
3759 10077 : ret = pthreadpool_tevent_job_recv(subreq);
3760 10077 : TALLOC_FREE(subreq);
3761 10077 : SMBPROFILE_BYTES_ASYNC_END(state->profile_bytes);
3762 10077 : talloc_set_destructor(state, NULL);
3763 10077 : if (ret != 0) {
3764 0 : if (ret != EAGAIN) {
3765 0 : tevent_req_error(req, ret);
3766 0 : return;
3767 : }
3768 : /*
3769 : * If we get EAGAIN from pthreadpool_tevent_job_recv() this
3770 : * means the lower level pthreadpool failed to create a new
3771 : * thread. Fallback to sync processing in that case to allow
3772 : * some progress for the client.
3773 : */
3774 0 : vfswrap_getxattrat_do_sync(req);
3775 0 : return;
3776 : }
3777 :
3778 10077 : if (state->xattr_size == -1) {
3779 68 : tevent_req_error(req, state->vfs_aio_state.error);
3780 68 : return;
3781 : }
3782 :
3783 10009 : if (state->xattr_value == NULL) {
3784 : /*
3785 : * The caller only wanted the size.
3786 : */
3787 0 : tevent_req_done(req);
3788 0 : return;
3789 : }
3790 :
3791 : /*
3792 : * shrink the buffer to the returned size.
3793 : * (can't fail). It means NULL if size is 0.
3794 : */
3795 10009 : state->xattr_value = talloc_realloc(state,
3796 : state->xattr_value,
3797 : uint8_t,
3798 : state->xattr_size);
3799 :
3800 10009 : tevent_req_done(req);
3801 : }
3802 :
3803 10077 : static ssize_t vfswrap_getxattrat_recv(struct tevent_req *req,
3804 : struct vfs_aio_state *aio_state,
3805 : TALLOC_CTX *mem_ctx,
3806 : uint8_t **xattr_value)
3807 : {
3808 10077 : struct vfswrap_getxattrat_state *state = tevent_req_data(
3809 : req, struct vfswrap_getxattrat_state);
3810 0 : ssize_t xattr_size;
3811 :
3812 10077 : if (tevent_req_is_unix_error(req, &aio_state->error)) {
3813 68 : tevent_req_received(req);
3814 68 : return -1;
3815 : }
3816 :
3817 10009 : *aio_state = state->vfs_aio_state;
3818 10009 : xattr_size = state->xattr_size;
3819 10009 : if (xattr_value != NULL) {
3820 10009 : *xattr_value = talloc_move(mem_ctx, &state->xattr_value);
3821 : }
3822 :
3823 10009 : tevent_req_received(req);
3824 10009 : return xattr_size;
3825 : }
3826 :
3827 16268 : static ssize_t vfswrap_flistxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, char *list, size_t size)
3828 : {
3829 16268 : int fd = fsp_get_pathref_fd(fsp);
3830 :
3831 16268 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3832 :
3833 16268 : if (!fsp->fsp_flags.is_pathref) {
3834 694 : return flistxattr(fd, list, size);
3835 : }
3836 :
3837 15574 : if (fsp->fsp_flags.have_proc_fds) {
3838 0 : struct sys_proc_fd_path_buf buf;
3839 :
3840 7798 : return listxattr(sys_proc_fd_path(fd, &buf), list, size);
3841 : }
3842 :
3843 : /*
3844 : * This is no longer a handle based call.
3845 : */
3846 7776 : return listxattr(fsp->fsp_name->base_name, list, size);
3847 : }
3848 :
3849 12 : static int vfswrap_fremovexattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name)
3850 : {
3851 12 : int fd = fsp_get_pathref_fd(fsp);
3852 :
3853 12 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3854 :
3855 12 : if (!fsp->fsp_flags.is_pathref) {
3856 0 : return fremovexattr(fd, name);
3857 : }
3858 :
3859 12 : if (fsp->fsp_flags.have_proc_fds) {
3860 0 : struct sys_proc_fd_path_buf buf;
3861 :
3862 6 : return removexattr(sys_proc_fd_path(fd, &buf), name);
3863 : }
3864 :
3865 : /*
3866 : * This is no longer a handle based call.
3867 : */
3868 6 : return removexattr(fsp->fsp_name->base_name, name);
3869 : }
3870 :
3871 11111 : static int vfswrap_fsetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp, const char *name, const void *value, size_t size, int flags)
3872 : {
3873 11111 : int fd = fsp_get_pathref_fd(fsp);
3874 :
3875 11111 : SMB_ASSERT(!fsp_is_alternate_stream(fsp));
3876 :
3877 11111 : if (!fsp->fsp_flags.is_pathref) {
3878 10634 : return fsetxattr(fd, name, value, size, flags);
3879 : }
3880 :
3881 477 : if (fsp->fsp_flags.have_proc_fds) {
3882 0 : struct sys_proc_fd_path_buf buf;
3883 :
3884 239 : return setxattr(sys_proc_fd_path(fd, &buf),
3885 : name,
3886 : value,
3887 : size,
3888 : flags);
3889 : }
3890 :
3891 : /*
3892 : * This is no longer a handle based call.
3893 : */
3894 238 : return setxattr(fsp->fsp_name->base_name, name, value, size, flags);
3895 : }
3896 :
3897 77 : static bool vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp)
3898 : {
3899 77 : return false;
3900 : }
3901 :
3902 1470668 : static bool vfswrap_is_offline(struct connection_struct *conn,
3903 : const struct smb_filename *fname)
3904 : {
3905 2249 : NTSTATUS status;
3906 2249 : char *path;
3907 1470668 : bool offline = false;
3908 :
3909 1470668 : if (ISDOT(fname->base_name) || ISDOTDOT(fname->base_name)) {
3910 61390 : return false;
3911 : }
3912 :
3913 1409246 : if (!lp_dmapi_support(SNUM(conn)) || !dmapi_have_session()) {
3914 : #if defined(ENOTSUP)
3915 1409246 : errno = ENOTSUP;
3916 : #endif
3917 1409246 : return false;
3918 : }
3919 :
3920 0 : status = get_full_smb_filename(talloc_tos(), fname, &path);
3921 0 : if (!NT_STATUS_IS_OK(status)) {
3922 0 : errno = map_errno_from_nt_status(status);
3923 0 : return false;
3924 : }
3925 :
3926 0 : offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0;
3927 :
3928 0 : TALLOC_FREE(path);
3929 :
3930 0 : return offline;
3931 : }
3932 :
3933 550 : static NTSTATUS vfswrap_durable_cookie(struct vfs_handle_struct *handle,
3934 : struct files_struct *fsp,
3935 : TALLOC_CTX *mem_ctx,
3936 : DATA_BLOB *cookie)
3937 : {
3938 550 : return vfs_default_durable_cookie(fsp, mem_ctx, cookie);
3939 : }
3940 :
3941 168 : static NTSTATUS vfswrap_durable_disconnect(struct vfs_handle_struct *handle,
3942 : struct files_struct *fsp,
3943 : const DATA_BLOB old_cookie,
3944 : TALLOC_CTX *mem_ctx,
3945 : DATA_BLOB *new_cookie)
3946 : {
3947 168 : return vfs_default_durable_disconnect(fsp, old_cookie, mem_ctx,
3948 : new_cookie);
3949 : }
3950 :
3951 158 : static NTSTATUS vfswrap_durable_reconnect(struct vfs_handle_struct *handle,
3952 : struct smb_request *smb1req,
3953 : struct smbXsrv_open *op,
3954 : const DATA_BLOB old_cookie,
3955 : TALLOC_CTX *mem_ctx,
3956 : struct files_struct **fsp,
3957 : DATA_BLOB *new_cookie)
3958 : {
3959 158 : return vfs_default_durable_reconnect(handle->conn, smb1req, op,
3960 : old_cookie, mem_ctx,
3961 : fsp, new_cookie);
3962 : }
3963 :
3964 : static struct vfs_fn_pointers vfs_default_fns = {
3965 : /* Disk operations */
3966 :
3967 : .connect_fn = vfswrap_connect,
3968 : .disconnect_fn = vfswrap_disconnect,
3969 : .disk_free_fn = vfswrap_disk_free,
3970 : .get_quota_fn = vfswrap_get_quota,
3971 : .set_quota_fn = vfswrap_set_quota,
3972 : .get_shadow_copy_data_fn = vfswrap_get_shadow_copy_data,
3973 : .statvfs_fn = vfswrap_statvfs,
3974 : .fs_capabilities_fn = vfswrap_fs_capabilities,
3975 : .get_dfs_referrals_fn = vfswrap_get_dfs_referrals,
3976 : .create_dfs_pathat_fn = vfswrap_create_dfs_pathat,
3977 : .read_dfs_pathat_fn = vfswrap_read_dfs_pathat,
3978 : .snap_check_path_fn = vfswrap_snap_check_path,
3979 : .snap_create_fn = vfswrap_snap_create,
3980 : .snap_delete_fn = vfswrap_snap_delete,
3981 :
3982 : /* Directory operations */
3983 :
3984 : .fdopendir_fn = vfswrap_fdopendir,
3985 : .readdir_fn = vfswrap_readdir,
3986 : .freaddir_attr_fn = vfswrap_freaddir_attr,
3987 : .rewind_dir_fn = vfswrap_rewinddir,
3988 : .mkdirat_fn = vfswrap_mkdirat,
3989 : .closedir_fn = vfswrap_closedir,
3990 :
3991 : /* File operations */
3992 :
3993 : .openat_fn = vfswrap_openat,
3994 : .create_file_fn = vfswrap_create_file,
3995 : .close_fn = vfswrap_close,
3996 : .pread_fn = vfswrap_pread,
3997 : .pread_send_fn = vfswrap_pread_send,
3998 : .pread_recv_fn = vfswrap_pread_recv,
3999 : .pwrite_fn = vfswrap_pwrite,
4000 : .pwrite_send_fn = vfswrap_pwrite_send,
4001 : .pwrite_recv_fn = vfswrap_pwrite_recv,
4002 : .lseek_fn = vfswrap_lseek,
4003 : .sendfile_fn = vfswrap_sendfile,
4004 : .recvfile_fn = vfswrap_recvfile,
4005 : .renameat_fn = vfswrap_renameat,
4006 : .fsync_send_fn = vfswrap_fsync_send,
4007 : .fsync_recv_fn = vfswrap_fsync_recv,
4008 : .stat_fn = vfswrap_stat,
4009 : .fstat_fn = vfswrap_fstat,
4010 : .lstat_fn = vfswrap_lstat,
4011 : .fstatat_fn = vfswrap_fstatat,
4012 : .get_alloc_size_fn = vfswrap_get_alloc_size,
4013 : .unlinkat_fn = vfswrap_unlinkat,
4014 : .fchmod_fn = vfswrap_fchmod,
4015 : .fchown_fn = vfswrap_fchown,
4016 : .lchown_fn = vfswrap_lchown,
4017 : .chdir_fn = vfswrap_chdir,
4018 : .getwd_fn = vfswrap_getwd,
4019 : .fntimes_fn = vfswrap_fntimes,
4020 : .ftruncate_fn = vfswrap_ftruncate,
4021 : .fallocate_fn = vfswrap_fallocate,
4022 : .lock_fn = vfswrap_lock,
4023 : .filesystem_sharemode_fn = vfswrap_filesystem_sharemode,
4024 : .fcntl_fn = vfswrap_fcntl,
4025 : .linux_setlease_fn = vfswrap_linux_setlease,
4026 : .getlock_fn = vfswrap_getlock,
4027 : .symlinkat_fn = vfswrap_symlinkat,
4028 : .readlinkat_fn = vfswrap_readlinkat,
4029 : .linkat_fn = vfswrap_linkat,
4030 : .mknodat_fn = vfswrap_mknodat,
4031 : .realpath_fn = vfswrap_realpath,
4032 : .fchflags_fn = vfswrap_fchflags,
4033 : .file_id_create_fn = vfswrap_file_id_create,
4034 : .fs_file_id_fn = vfswrap_fs_file_id,
4035 : .fstreaminfo_fn = vfswrap_fstreaminfo,
4036 : .get_real_filename_at_fn = vfswrap_get_real_filename_at,
4037 : .connectpath_fn = vfswrap_connectpath,
4038 : .brl_lock_windows_fn = vfswrap_brl_lock_windows,
4039 : .brl_unlock_windows_fn = vfswrap_brl_unlock_windows,
4040 : .strict_lock_check_fn = vfswrap_strict_lock_check,
4041 : .translate_name_fn = vfswrap_translate_name,
4042 : .parent_pathname_fn = vfswrap_parent_pathname,
4043 : .fsctl_fn = vfswrap_fsctl,
4044 : .fset_dos_attributes_fn = vfswrap_fset_dos_attributes,
4045 : .get_dos_attributes_send_fn = vfswrap_get_dos_attributes_send,
4046 : .get_dos_attributes_recv_fn = vfswrap_get_dos_attributes_recv,
4047 : .fget_dos_attributes_fn = vfswrap_fget_dos_attributes,
4048 : .offload_read_send_fn = vfswrap_offload_read_send,
4049 : .offload_read_recv_fn = vfswrap_offload_read_recv,
4050 : .offload_write_send_fn = vfswrap_offload_write_send,
4051 : .offload_write_recv_fn = vfswrap_offload_write_recv,
4052 : .fget_compression_fn = vfswrap_fget_compression,
4053 : .set_compression_fn = vfswrap_set_compression,
4054 :
4055 : /* NT ACL operations. */
4056 :
4057 : .fget_nt_acl_fn = vfswrap_fget_nt_acl,
4058 : .fset_nt_acl_fn = vfswrap_fset_nt_acl,
4059 : .audit_file_fn = vfswrap_audit_file,
4060 :
4061 : /* POSIX ACL operations. */
4062 :
4063 : .sys_acl_get_fd_fn = vfswrap_sys_acl_get_fd,
4064 : .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
4065 : .sys_acl_set_fd_fn = vfswrap_sys_acl_set_fd,
4066 : .sys_acl_delete_def_fd_fn = vfswrap_sys_acl_delete_def_fd,
4067 :
4068 : /* EA operations. */
4069 : .getxattrat_send_fn = vfswrap_getxattrat_send,
4070 : .getxattrat_recv_fn = vfswrap_getxattrat_recv,
4071 : .fgetxattr_fn = vfswrap_fgetxattr,
4072 : .flistxattr_fn = vfswrap_flistxattr,
4073 : .fremovexattr_fn = vfswrap_fremovexattr,
4074 : .fsetxattr_fn = vfswrap_fsetxattr,
4075 :
4076 : /* aio operations */
4077 : .aio_force_fn = vfswrap_aio_force,
4078 :
4079 : /* durable handle operations */
4080 : .durable_cookie_fn = vfswrap_durable_cookie,
4081 : .durable_disconnect_fn = vfswrap_durable_disconnect,
4082 : .durable_reconnect_fn = vfswrap_durable_reconnect,
4083 : };
4084 :
4085 : static_decl_vfs;
4086 29093 : NTSTATUS vfs_default_init(TALLOC_CTX *ctx)
4087 : {
4088 : /*
4089 : * Here we need to implement every call!
4090 : *
4091 : * As this is the end of the vfs module chain.
4092 : */
4093 29093 : smb_vfs_assert_all_fns(&vfs_default_fns, DEFAULT_VFS_MODULE_NAME);
4094 29093 : return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
4095 : DEFAULT_VFS_MODULE_NAME, &vfs_default_fns);
4096 : }
4097 :
4098 :
|
