summaryrefslogtreecommitdiffstats
path: root/source3/modules/vfs_recycle.c
blob: 327a7eea06e31b8d076f5e4fad72d5148030be15 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
/*
 * Recycle bin VFS module for Samba.
 *
 * Copyright (C) 2001, Brandon Stone, Amherst College, <bbstone@amherst.edu>.
 * Copyright (C) 2002, Jeremy Allison - modified to make a VFS module.
 * Copyright (C) 2002, Alexander Bokovoy - cascaded VFS adoption,
 * Copyright (C) 2002, Juergen Hasch - added some options.
 * Copyright (C) 2002, Simo Sorce
 * Copyright (C) 2002, Stefan (metze) Metzmacher
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include "includes.h"
#include "smbd/smbd.h"
#include "system/filesys.h"
#include "../librpc/gen_ndr/ndr_netlogon.h"
#include "auth.h"
#include "source3/lib/substitute.h"

#define ALLOC_CHECK(ptr, label) do { if ((ptr) == NULL) { DEBUG(0, ("recycle.bin: out of memory!\n")); errno = ENOMEM; goto label; } } while(0)

static int vfs_recycle_debug_level = DBGC_VFS;

#undef DBGC_CLASS
#define DBGC_CLASS vfs_recycle_debug_level

struct recycle_config_data {
	const char *repository;
	bool keeptree;
	bool versions;
	bool touch;
	bool touch_mtime;
	const char **exclude;
	const char **exclude_dir;
	const char **noversions;
	mode_t directory_mode;
	mode_t subdir_mode;
	off_t minsize;
	off_t maxsize;
};

static int vfs_recycle_connect(struct vfs_handle_struct *handle,
			       const char *service,
			       const char *user)
{
	struct recycle_config_data *config = NULL;
	int ret;
	int t;
	const char *buff;

	ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
	if (ret < 0) {
		return ret;
	}

	if (IS_IPC(handle->conn) || IS_PRINT(handle->conn)) {
		return 0;
	}

	config = talloc_zero(handle->conn, struct recycle_config_data);
	if (config == NULL) {
		DBG_ERR("talloc_zero() failed\n");
		errno = ENOMEM;
		return -1;
	}
	config->repository = lp_parm_const_string(SNUM(handle->conn),
						  "recycle",
						  "repository",
						  ".recycle");
	config->keeptree = lp_parm_bool(SNUM(handle->conn),
					"recycle",
					"keeptree",
					False);
	config->versions = lp_parm_bool(SNUM(handle->conn),
					"recycle",
					"versions",
					False);
	config->touch = lp_parm_bool(SNUM(handle->conn),
				     "recycle",
				     "touch",
				     False);
	config->touch_mtime = lp_parm_bool(SNUM(handle->conn),
					   "recycle",
					   "touch_mtime",
					   False);
	config->exclude = lp_parm_string_list(SNUM(handle->conn),
					      "recycle",
					      "exclude",
					      NULL);
	config->exclude_dir = lp_parm_string_list(SNUM(handle->conn),
						  "recycle",
						  "exclude_dir",
						  NULL);
	config->noversions = lp_parm_string_list(SNUM(handle->conn),
						 "recycle",
						 "noversions",
						 NULL);
	config->minsize = conv_str_size(lp_parm_const_string(
		SNUM(handle->conn), "recycle", "minsize", NULL));
	config->maxsize = conv_str_size(lp_parm_const_string(
		SNUM(handle->conn), "recycle", "maxsize", NULL));

	buff = lp_parm_const_string(SNUM(handle->conn),
				    "recycle",
				    "directory_mode",
				    NULL);
	if (buff != NULL ) {
		sscanf(buff, "%o", &t);
	} else {
		t = S_IRUSR | S_IWUSR | S_IXUSR;
	}
	config->directory_mode = (mode_t)t;

	buff = lp_parm_const_string(SNUM(handle->conn),
				    "recycle",
				    "subdir_mode",
				    NULL);
	if (buff != NULL ) {
		sscanf(buff, "%o", &t);
	} else {
		t = config->directory_mode;
	}
	config->subdir_mode = (mode_t)t;

	SMB_VFS_HANDLE_SET_DATA(
		handle, config, NULL, struct recycle_config_data, return -1);
	return 0;
}

static bool recycle_directory_exist(vfs_handle_struct *handle, const char *dname)
{
	struct smb_filename smb_fname = {
			.base_name = discard_const_p(char, dname)
	};

	if (SMB_VFS_STAT(handle->conn, &smb_fname) == 0) {
		if (S_ISDIR(smb_fname.st.st_ex_mode)) {
			return True;
		}
	}

	return False;
}

static bool recycle_file_exist(vfs_handle_struct *handle,
			       const struct smb_filename *smb_fname)
{
	struct smb_filename *smb_fname_tmp = NULL;
	bool ret = false;

	smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
	if (smb_fname_tmp == NULL) {
		return false;
	}

	if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) == 0) {
		if (S_ISREG(smb_fname_tmp->st.st_ex_mode)) {
			ret = true;
		}
	}

	TALLOC_FREE(smb_fname_tmp);
	return ret;
}

/**
 * Return file size
 * @param conn connection
 * @param fname file name
 * @return size in bytes
 **/
static off_t recycle_get_file_size(vfs_handle_struct *handle,
				       const struct smb_filename *smb_fname)
{
	struct smb_filename *smb_fname_tmp = NULL;
	off_t size;

	smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
	if (smb_fname_tmp == NULL) {
		size = (off_t)0;
		goto out;
	}

	if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
		DBG_DEBUG("stat for %s returned %s\n",
			 smb_fname_str_dbg(smb_fname_tmp), strerror(errno));
		size = (off_t)0;
		goto out;
	}

	size = smb_fname_tmp->st.st_ex_size;
 out:
	TALLOC_FREE(smb_fname_tmp);
	return size;
}

/**
 * Create directory tree
 * @param conn connection
 * @param dname Directory tree to be created
 * @param directory mode
 * @param subdirectory mode
 * @return Returns True for success
 **/
static bool recycle_create_dir(vfs_handle_struct *handle,
			       const char *dname,
			       mode_t dir_mode,
			       mode_t subdir_mode)
{
	size_t len;
	mode_t mode = dir_mode;
	char *new_dir = NULL;
	char *tmp_str = NULL;
	char *token;
	char *tok_str;
	bool ret = False;
	char *saveptr;

	tmp_str = SMB_STRDUP(dname);
	ALLOC_CHECK(tmp_str, done);
	tok_str = tmp_str;

	len = strlen(dname)+1;
	new_dir = (char *)SMB_MALLOC(len + 1);
	ALLOC_CHECK(new_dir, done);
	*new_dir = '\0';
	if (dname[0] == '/') {
		/* Absolute path. */
		if (strlcat(new_dir,"/",len+1) >= len+1) {
			goto done;
		}
	}

	/* Create directory tree if necessary */
	for(token = strtok_r(tok_str, "/", &saveptr); token;
	    token = strtok_r(NULL, "/", &saveptr)) {
		if (strlcat(new_dir, token, len+1) >= len+1) {
			goto done;
		}
		if (recycle_directory_exist(handle, new_dir))
			DEBUG(10, ("recycle: dir %s already exists\n", new_dir));
		else {
			struct smb_filename *smb_fname = NULL;
			int retval;

			DEBUG(5, ("recycle: creating new dir %s\n", new_dir));

			smb_fname = synthetic_smb_fname(talloc_tos(),
						new_dir,
						NULL,
						NULL,
						0,
						0);
			if (smb_fname == NULL) {
				goto done;
			}

			retval = SMB_VFS_NEXT_MKDIRAT(handle,
					handle->conn->cwd_fsp,
					smb_fname,
					mode);
			if (retval != 0) {
				DBG_WARNING("recycle: mkdirat failed "
					"for %s with error: %s\n",
					new_dir,
					strerror(errno));
				TALLOC_FREE(smb_fname);
				ret = False;
				goto done;
			}
			TALLOC_FREE(smb_fname);
		}
		if (strlcat(new_dir, "/", len+1) >= len+1) {
			goto done;
		}
		mode = subdir_mode;
	}

	ret = True;
done:
	SAFE_FREE(tmp_str);
	SAFE_FREE(new_dir);
	return ret;
}

/**
 * Check if any of the components of "exclude_list" are contained in path.
 * Return True if found
 **/

static bool matchdirparam(const char **dir_exclude_list, char *path)
{
	char *startp = NULL, *endp = NULL;

	if (dir_exclude_list == NULL || dir_exclude_list[0] == NULL ||
		*dir_exclude_list[0] == '\0' || path == NULL || *path == '\0') {
		return False;
	}

	/* 
	 * Walk the components of path, looking for matches with the
	 * exclude list on each component. 
	 */

	for (startp = path; startp; startp = endp) {
		int i;

		while (*startp == '/') {
			startp++;
		}
		endp = strchr(startp, '/');
		if (endp) {
			*endp = '\0';
		}

		for(i=0; dir_exclude_list[i] ; i++) {
			if(unix_wild_match(dir_exclude_list[i], startp)) {
				/* Repair path. */
				if (endp) {
					*endp = '/';
				}
				return True;
			}
		}

		/* Repair path. */
		if (endp) {
			*endp = '/';
		}
	}

	return False;
}

/**
 * Check if needle is contained in haystack, * and ? patterns are resolved
 * @param haystack list of parameters separated by delimimiter character
 * @param needle string to be matched exectly to haystack including pattern matching
 * @return True if found
 **/
static bool matchparam(const char **haystack_list, const char *needle)
{
	int i;

	if (haystack_list == NULL || haystack_list[0] == NULL ||
		*haystack_list[0] == '\0' || needle == NULL || *needle == '\0') {
		return False;
	}

	for(i=0; haystack_list[i] ; i++) {
		if(unix_wild_match(haystack_list[i], needle)) {
			return True;
		}
	}

	return False;
}

/**
 * Touch access or modify date
 **/
static void recycle_do_touch(vfs_handle_struct *handle,
			     const struct smb_filename *smb_fname,
			     bool touch_mtime)
{
	struct smb_filename *smb_fname_tmp = NULL;
	struct smb_file_time ft;
	int ret, err;
	NTSTATUS status;

	init_smb_file_time(&ft);

	status = synthetic_pathref(talloc_tos(),
				   handle->conn->cwd_fsp,
				   smb_fname->base_name,
				   smb_fname->stream_name,
				   NULL,
				   smb_fname->twrp,
				   smb_fname->flags,
				   &smb_fname_tmp);
	if (!NT_STATUS_IS_OK(status)) {
		DBG_DEBUG("synthetic_pathref for '%s' failed: %s\n",
			  smb_fname_str_dbg(smb_fname), nt_errstr(status));
		return;
	}

	/* atime */
	ft.atime = timespec_current();
	/* mtime */
	ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;

	become_root();
	ret = SMB_VFS_NEXT_FNTIMES(handle, smb_fname_tmp->fsp, &ft);
	err = errno;
	unbecome_root();
	if (ret == -1 ) {
		DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
			  smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
	}

	TALLOC_FREE(smb_fname_tmp);
}

/**
 * Check if file should be recycled
 **/
static int recycle_unlink_internal(vfs_handle_struct *handle,
				struct files_struct *dirfsp,
				const struct smb_filename *smb_fname,
				int flags)
{
	const struct loadparm_substitution *lp_sub =
		loadparm_s3_global_substitution();
	connection_struct *conn = handle->conn;
	struct smb_filename *full_fname = NULL;
	char *path_name = NULL;
       	char *temp_name = NULL;
	char *final_name = NULL;
	struct smb_filename *smb_fname_final = NULL;
	const char *base;
	char *repository = NULL;
	int i = 1;
	off_t file_size; /* space_avail;	*/
	bool exist;
	int rc = -1;
	struct recycle_config_data *config;

	SMB_VFS_HANDLE_GET_DATA(handle,
				config,
				struct recycle_config_data,
				return true);

	repository = talloc_sub_full(
		NULL,
		lp_servicename(talloc_tos(), lp_sub, SNUM(conn)),
		conn->session_info->unix_info->unix_name,
		conn->connectpath,
		conn->session_info->unix_token->gid,
		conn->session_info->unix_info->sanitized_username,
		conn->session_info->info->domain_name,
		config->repository);
	ALLOC_CHECK(repository, done);
	/* shouldn't we allow absolute path names here? --metze */
	/* Yes :-). JRA. */
	trim_char(repository, '\0', '/');

	if(!repository || *(repository) == '\0') {
		DEBUG(3, ("recycle: repository path not set, purging %s...\n",
			  smb_fname_str_dbg(smb_fname)));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
		goto done;
	}

	full_fname = full_path_from_dirfsp_atname(talloc_tos(),
						  dirfsp,
						  smb_fname);
	if (full_fname == NULL) {
		return -1;
	}

	/* we don't recycle the recycle bin... */
	if (strncmp(full_fname->base_name, repository,
		    strlen(repository)) == 0) {
		DEBUG(3, ("recycle: File is within recycling bin, unlinking ...\n"));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
		goto done;
	}

	file_size = recycle_get_file_size(handle, full_fname);
	/* it is wrong to purge filenames only because they are empty imho
	 *   --- simo
	 *
	if(fsize == 0) {
		DEBUG(3, ("recycle: File %s is empty, purging...\n", file_name));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					file_name,
					flags);
		goto done;
	}
	 */

	/* FIXME: this is wrong, we should check the whole size of the recycle bin is
	 * not greater then maxsize, not the size of the single file, also it is better
	 * to remove older files
	 */
	if (config->maxsize > 0 && file_size > config->maxsize) {
		DBG_NOTICE("File %s exceeds maximum recycle size, "
			   "purging... \n",
			   smb_fname_str_dbg(full_fname));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
		goto done;
	}
	if (config->minsize > 0 && file_size < config->minsize) {
		DBG_NOTICE("File %s lowers minimum recycle size, "
			   "purging... \n",
			   smb_fname_str_dbg(full_fname));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
		goto done;
	}

	/* FIXME: this is wrong: moving files with rename does not change the disk space
	 * allocation
	 *
	space_avail = SMB_VFS_NEXT_DISK_FREE(handle, ".", True, &bsize, &dfree, &dsize) * 1024L;
	DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size));
	if(space_avail < file_size) {
		DEBUG(3, ("recycle: Not enough diskspace, purging file %s\n", file_name));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					file_name,
					flags);
		goto done;
	}
	 */

	/* extract filename and path */
	if (!parent_dirname(talloc_tos(), full_fname->base_name, &path_name, &base)) {
		rc = -1;
		errno = ENOMEM;
		goto done;
	}

	/* original filename with path */
	DEBUG(10, ("recycle: fname = %s\n", smb_fname_str_dbg(full_fname)));
	/* original path */
	DEBUG(10, ("recycle: fpath = %s\n", path_name));
	/* filename without path */
	DEBUG(10, ("recycle: base = %s\n", base));

	if (matchparam(config->exclude, base)) {
		DEBUG(3, ("recycle: file %s is excluded \n", base));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
		goto done;
	}

	if (matchdirparam(config->exclude_dir, path_name)) {
		DEBUG(3, ("recycle: directory %s is excluded \n", path_name));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
		goto done;
	}

	if (config->keeptree) {
		if (asprintf(&temp_name, "%s/%s", repository, path_name) == -1) {
			ALLOC_CHECK(temp_name, done);
		}
	} else {
		temp_name = SMB_STRDUP(repository);
	}
	ALLOC_CHECK(temp_name, done);

	exist = recycle_directory_exist(handle, temp_name);
	if (exist) {
		DEBUG(10, ("recycle: Directory already exists\n"));
	} else {
		DEBUG(10, ("recycle: Creating directory %s\n", temp_name));
		if (recycle_create_dir(handle,
				       temp_name,
				       config->directory_mode,
				       config->subdir_mode) == False)
		{
			DEBUG(3, ("recycle: Could not create directory, "
				  "purging %s...\n",
				  smb_fname_str_dbg(full_fname)));
			rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
			goto done;
		}
	}

	if (asprintf(&final_name, "%s/%s", temp_name, base) == -1) {
		ALLOC_CHECK(final_name, done);
	}

	/* Create smb_fname with final base name and orig stream name. */
	smb_fname_final = synthetic_smb_fname(talloc_tos(),
					final_name,
					full_fname->stream_name,
					NULL,
					full_fname->twrp,
					full_fname->flags);
	if (smb_fname_final == NULL) {
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
		goto done;
	}

	/* new filename with path */
	DEBUG(10, ("recycle: recycled file name: %s\n",
		   smb_fname_str_dbg(smb_fname_final)));

	/* check if we should delete file from recycle bin */
	if (recycle_file_exist(handle, smb_fname_final)) {
		if (config->versions == False ||
		    matchparam(config->noversions, base) == True) {
			DEBUG(3, ("recycle: Removing old file %s from recycle "
				  "bin\n", smb_fname_str_dbg(smb_fname_final)));
			if (SMB_VFS_NEXT_UNLINKAT(handle,
						dirfsp->conn->cwd_fsp,
						smb_fname_final,
						flags) != 0) {
				DEBUG(1, ("recycle: Error deleting old file: %s\n", strerror(errno)));
			}
		}
	}

	/* rename file we move to recycle bin */
	i = 1;
	while (recycle_file_exist(handle, smb_fname_final)) {
		SAFE_FREE(final_name);
		if (asprintf(&final_name, "%s/Copy #%d of %s", temp_name, i++, base) == -1) {
			ALLOC_CHECK(final_name, done);
		}
		TALLOC_FREE(smb_fname_final->base_name);
		smb_fname_final->base_name = talloc_strdup(smb_fname_final,
							   final_name);
		if (smb_fname_final->base_name == NULL) {
			rc = SMB_VFS_NEXT_UNLINKAT(handle,
						dirfsp,
						smb_fname,
						flags);
			goto done;
		}
	}

	DEBUG(10, ("recycle: Moving %s to %s\n", smb_fname_str_dbg(full_fname),
		smb_fname_str_dbg(smb_fname_final)));
	rc = SMB_VFS_NEXT_RENAMEAT(handle,
			dirfsp,
			smb_fname,
			handle->conn->cwd_fsp,
			smb_fname_final);
	if (rc != 0) {
		DEBUG(3, ("recycle: Move error %d (%s), purging file %s "
			  "(%s)\n", errno, strerror(errno),
			  smb_fname_str_dbg(full_fname),
			  smb_fname_str_dbg(smb_fname_final)));
		rc = SMB_VFS_NEXT_UNLINKAT(handle,
				dirfsp,
				smb_fname,
				flags);
		goto done;
	}

	/* touch access date of moved file */
	if (config->touch || config->touch_mtime)
		recycle_do_touch(handle, smb_fname_final, config->touch_mtime);

done:
	TALLOC_FREE(path_name);
	SAFE_FREE(temp_name);
	SAFE_FREE(final_name);
	TALLOC_FREE(full_fname);
	TALLOC_FREE(smb_fname_final);
	TALLOC_FREE(repository);
	return rc;
}

static int recycle_unlinkat(vfs_handle_struct *handle,
		struct files_struct *dirfsp,
		const struct smb_filename *smb_fname,
		int flags)
{
	int ret;

	if (flags & AT_REMOVEDIR) {
		ret = SMB_VFS_NEXT_UNLINKAT(handle,
					dirfsp,
					smb_fname,
					flags);
	} else {
		ret = recycle_unlink_internal(handle,
					dirfsp,
					smb_fname,
					flags);
	}
	return ret;
}

static struct vfs_fn_pointers vfs_recycle_fns = {
	.connect_fn = vfs_recycle_connect,
	.unlinkat_fn = recycle_unlinkat,
};

static_decl_vfs;
NTSTATUS vfs_recycle_init(TALLOC_CTX *ctx)
{
	NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "recycle",
					&vfs_recycle_fns);

	if (!NT_STATUS_IS_OK(ret))
		return ret;

	vfs_recycle_debug_level = debug_add_class("recycle");
	if (vfs_recycle_debug_level == -1) {
		vfs_recycle_debug_level = DBGC_VFS;
		DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n"));
	} else {
		DEBUG(10, ("vfs_recycle: Debug class number of 'recycle': %d\n", vfs_recycle_debug_level));
	}

	return ret;
}