summaryrefslogtreecommitdiffstats
path: root/src/vfs/sftpfs/sftpfs.c
blob: f2cc5921c8aecb87cc1b1fd04fadc0846b45819f (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
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
/* Virtual File System: SFTP file system.
   The interface function

   Copyright (C) 2011-2023
   Free Software Foundation, Inc.

   Written by:
   Ilia Maslakov <il.smind@gmail.com>, 2011
   Slava Zanko <slavazanko@gmail.com>, 2011-2013
   Andrew Borodin <aborodin@vmail.ru>, 2021-2022

   This file is part of the Midnight Commander.

   The Midnight Commander 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.

   The Midnight Commander 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 <config.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>             /* memset() */

#include "lib/global.h"
#include "lib/vfs/netutil.h"
#include "lib/vfs/utilvfs.h"
#include "lib/vfs/gc.h"
#include "lib/widget.h"
#include "lib/tty/tty.h"        /* tty_enable_interrupt_key () */

#include "internal.h"

#include "sftpfs.h"

/*** global variables ****************************************************************************/

struct vfs_s_subclass sftpfs_subclass;
struct vfs_class *vfs_sftpfs_ops = VFS_CLASS (&sftpfs_subclass);        /* used in file.c */

/*** file scope macro definitions ****************************************************************/

/*** file scope type declarations ****************************************************************/

/*** forward declarations (file scope functions) *************************************************/

/*** file scope variables ************************************************************************/

/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for VFS-class init action.
 *
 * @param me structure of VFS class
 */

static int
sftpfs_cb_init (struct vfs_class *me)
{
    (void) me;

    if (libssh2_init (0) != 0)
        return 0;

    sftpfs_filename_buffer = g_string_new ("");
    sftpfs_init_config_variables_patterns ();
    return 1;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for VFS-class deinit action.
 *
 * @param me structure of VFS class
 */

static void
sftpfs_cb_done (struct vfs_class *me)
{
    (void) me;

    sftpfs_deinit_config_variables_patterns ();
    g_string_free (sftpfs_filename_buffer, TRUE);
    libssh2_exit ();
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for opening file.
 *
 * @param vpath path to file
 * @param flags flags (see man 2 open)
 * @param mode  mode (see man 2 open)
 * @return file data handler if success, NULL otherwise
 */

static void *
sftpfs_cb_open (const vfs_path_t * vpath, int flags, mode_t mode)
{
    vfs_file_handler_t *fh;
    struct vfs_class *me;
    struct vfs_s_super *super;
    const char *path_super;
    struct vfs_s_inode *path_inode;
    GError *mcerror = NULL;
    gboolean is_changed = FALSE;

    path_super = vfs_s_get_path (vpath, &super, 0);
    if (path_super == NULL)
        return NULL;

    me = VFS_CLASS (vfs_path_get_last_path_vfs (vpath));

    path_inode = vfs_s_find_inode (me, super, path_super, LINK_FOLLOW, FL_NONE);
    if (path_inode != NULL && ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)))
    {
        me->verrno = EEXIST;
        return NULL;
    }

    if (path_inode == NULL)
    {
        char *name;
        struct vfs_s_entry *ent;
        struct vfs_s_inode *dir;

        name = g_path_get_dirname (path_super);
        dir = vfs_s_find_inode (me, super, name, LINK_FOLLOW, FL_DIR);
        g_free (name);
        if (dir == NULL)
            return NULL;

        name = g_path_get_basename (path_super);
        ent = vfs_s_generate_entry (me, name, dir, 0755);
        g_free (name);
        path_inode = ent->ino;
        vfs_s_insert_entry (me, dir, ent);
        is_changed = TRUE;
    }

    if (S_ISDIR (path_inode->st.st_mode))
    {
        me->verrno = EISDIR;
        return NULL;
    }

    fh = sftpfs_fh_new (path_inode, is_changed);

    if (!sftpfs_open_file (fh, flags, mode, &mcerror))
    {
        mc_error_message (&mcerror, NULL);
        g_free (fh);
        return NULL;
    }

    vfs_rmstamp (me, (vfsid) super);
    super->fd_usage++;
    fh->ino->st.st_nlink++;
    return fh;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for opening directory.
 *
 * @param vpath path to directory
 * @return directory data handler if success, NULL otherwise
 */

static void *
sftpfs_cb_opendir (const vfs_path_t * vpath)
{
    GError *mcerror = NULL;
    void *ret_value;

    /* reset interrupt flag */
    tty_got_interrupt ();

    ret_value = sftpfs_opendir (vpath, &mcerror);
    mc_error_message (&mcerror, NULL);
    return ret_value;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for reading directory entry.
 *
 * @param data directory data handler
 * @return information about direntry if success, NULL otherwise
 */

static struct vfs_dirent *
sftpfs_cb_readdir (void *data)
{
    GError *mcerror = NULL;
    struct vfs_dirent *sftpfs_dirent;

    if (tty_got_interrupt ())
    {
        tty_disable_interrupt_key ();
        return NULL;
    }

    sftpfs_dirent = sftpfs_readdir (data, &mcerror);
    if (!mc_error_message (&mcerror, NULL))
    {
        if (sftpfs_dirent != NULL)
            vfs_print_message (_("sftp: (Ctrl-G break) Listing... %s"), sftpfs_dirent->d_name);
        else
            vfs_print_message ("%s", _("sftp: Listing done."));
    }

    return sftpfs_dirent;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for closing directory.
 *
 * @param data directory data handler
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_closedir (void *data)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_closedir (data, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for lstat VFS-function.
 *
 * @param vpath path to file or directory
 * @param buf   buffer for store stat-info
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_lstat (const vfs_path_t * vpath, struct stat *buf)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_lstat (vpath, buf, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for stat VFS-function.
 *
 * @param vpath path to file or directory
 * @param buf   buffer for store stat-info
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_stat (const vfs_path_t * vpath, struct stat *buf)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_stat (vpath, buf, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for fstat VFS-function.
 *
 * @param data file data handler
 * @param buf  buffer for store stat-info
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_fstat (void *data, struct stat *buf)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_fstat (data, buf, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for readlink VFS-function.
 *
 * @param vpath path to file or directory
 * @param buf   buffer for store stat-info
 * @param size  buffer size
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_readlink (const vfs_path_t * vpath, char *buf, size_t size)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_readlink (vpath, buf, size, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for utime VFS-function.
 *
 * @param vpath path to file or directory
 * @param times access and modification time to set
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_utime (const vfs_path_t * vpath, mc_timesbuf_t * times)
{
    int rc;
    GError *mcerror = NULL;

#ifdef HAVE_UTIMENSAT
    time_t atime = (*times)[0].tv_sec;
    time_t mtime = (*times)[1].tv_sec;
#else
    time_t atime = times->actime;
    time_t mtime = times->modtime;
#endif

    rc = sftpfs_utime (vpath, atime, mtime, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for symlink VFS-function.
 *
 * @param vpath1 path to file or directory
 * @param vpath2 path to symlink
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_symlink (const vfs_path_t * vpath1, const vfs_path_t * vpath2)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_symlink (vpath1, vpath2, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for symlink VFS-function.
 *
 * @param vpath unused
 * @param mode  unused
 * @param dev   unused
 * @return always 0
 */

static int
sftpfs_cb_mknod (const vfs_path_t * vpath, mode_t mode, dev_t dev)
{
    (void) vpath;
    (void) mode;
    (void) dev;

    return 0;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for link VFS-function.
 *
 * @param vpath1 unused
 * @param vpath2 unused
 * @return always 0
 */

static int
sftpfs_cb_link (const vfs_path_t * vpath1, const vfs_path_t * vpath2)
{
    (void) vpath1;
    (void) vpath2;

    return 0;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for chown VFS-function.
 *
 * @param vpath unused
 * @param owner unused
 * @param group unused
 * @return always 0
 */

static int
sftpfs_cb_chown (const vfs_path_t * vpath, uid_t owner, gid_t group)
{
    (void) vpath;
    (void) owner;
    (void) group;

    return 0;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for reading file content.
 *
 * @param data   file data handler
 * @param buffer buffer for data
 * @param count  data size
 * @return 0 if success, negative value otherwise
 */

static ssize_t
sftpfs_cb_read (void *data, char *buffer, size_t count)
{
    int rc;
    GError *mcerror = NULL;
    vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);

    if (tty_got_interrupt ())
    {
        tty_disable_interrupt_key ();
        return 0;
    }

    rc = sftpfs_read_file (fh, buffer, count, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for writing file content.
 *
 * @param data  file data handler
 * @param buf   buffer for data
 * @param count data size
 * @return 0 if success, negative value otherwise
 */

static ssize_t
sftpfs_cb_write (void *data, const char *buf, size_t nbyte)
{
    int rc;
    GError *mcerror = NULL;
    vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);

    rc = sftpfs_write_file (fh, buf, nbyte, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for close file.
 *
 * @param data file data handler
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_close (void *data)
{
    int rc;
    GError *mcerror = NULL;
    struct vfs_s_super *super = VFS_FILE_HANDLER_SUPER (data);
    vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);

    super->fd_usage--;
    if (super->fd_usage == 0)
        vfs_stamp_create (vfs_sftpfs_ops, super);

    rc = sftpfs_close_file (fh, &mcerror);
    mc_error_message (&mcerror, NULL);

    if (fh->handle != -1)
        close (fh->handle);

    vfs_s_free_inode (vfs_sftpfs_ops, fh->ino);

    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for chmod VFS-function.
 *
 * @param vpath path to file or directory
 * @param mode  mode (see man 2 open)
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_chmod (const vfs_path_t * vpath, mode_t mode)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_chmod (vpath, mode, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for mkdir VFS-function.
 *
 * @param vpath path directory
 * @param mode  mode (see man 2 open)
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_mkdir (const vfs_path_t * vpath, mode_t mode)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_mkdir (vpath, mode, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for rmdir VFS-function.
 *
 * @param vpath path directory
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_rmdir (const vfs_path_t * vpath)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_rmdir (vpath, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for lseek VFS-function.
 *
 * @param data   file data handler
 * @param offset file offset
 * @param whence method of seek (at begin, at current, at end)
 * @return 0 if success, negative value otherwise
 */

static off_t
sftpfs_cb_lseek (void *data, off_t offset, int whence)
{
    off_t ret_offset;
    vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);
    GError *mcerror = NULL;

    ret_offset = sftpfs_lseek (fh, offset, whence, &mcerror);
    mc_error_message (&mcerror, NULL);
    return ret_offset;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for unlink VFS-function.
 *
 * @param vpath path to file or directory
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_unlink (const vfs_path_t * vpath)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_unlink (vpath, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for rename VFS-function.
 *
 * @param vpath1 path to source file or directory
 * @param vpath2 path to destination file or directory
 * @return 0 if success, negative value otherwise
 */

static int
sftpfs_cb_rename (const vfs_path_t * vpath1, const vfs_path_t * vpath2)
{
    int rc;
    GError *mcerror = NULL;

    rc = sftpfs_rename (vpath1, vpath2, &mcerror);
    mc_error_message (&mcerror, NULL);
    return rc;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for errno VFS-function.
 *
 * @param me unused
 * @return value of errno global variable
 */

static int
sftpfs_cb_errno (struct vfs_class *me)
{
    (void) me;

    return errno;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for fill_names VFS function.
 * Add SFTP connections to the 'Active VFS connections'  list
 *
 * @param me   unused
 * @param func callback function for adding SFTP-connection to list of active connections
 */

static void
sftpfs_cb_fill_names (struct vfs_class *me, fill_names_f func)
{
    GList *iter;

    (void) me;

    for (iter = sftpfs_subclass.supers; iter != NULL; iter = g_list_next (iter))
    {
        const struct vfs_s_super *super = (const struct vfs_s_super *) iter->data;
        GString *name;

        name = vfs_path_element_build_pretty_path_str (super->path_element);

        func (name->str);
        g_string_free (name, TRUE);
    }
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for checking if connection is equal to existing connection.
 *
 * @param vpath_element path element with connection data
 * @param super         data with exists connection
 * @param vpath         unused
 * @param cookie        unused
 * @return TRUE if connections is equal, FALSE otherwise
 */

static gboolean
sftpfs_archive_same (const vfs_path_element_t * vpath_element, struct vfs_s_super *super,
                     const vfs_path_t * vpath, void *cookie)
{
    int result;
    vfs_path_element_t *orig_connect_info;

    (void) vpath;
    (void) cookie;

    orig_connect_info = SFTP_SUPER (super)->original_connection_info;

    result = ((g_strcmp0 (vpath_element->host, orig_connect_info->host) == 0)
              && (g_strcmp0 (vpath_element->user, orig_connect_info->user) == 0)
              && (vpath_element->port == orig_connect_info->port));

    return result;
}

/* --------------------------------------------------------------------------------------------- */

static struct vfs_s_super *
sftpfs_new_archive (struct vfs_class *me)
{
    sftpfs_super_t *arch;

    arch = g_new0 (sftpfs_super_t, 1);
    arch->base.me = me;
    arch->base.name = g_strdup (PATH_SEP_STR);
    arch->auth_type = NONE;
    arch->config_auth_type = NONE;
    arch->socket_handle = LIBSSH2_INVALID_SOCKET;

    return VFS_SUPER (arch);
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for opening new connection.
 *
 * @param super         connection data
 * @param vpath         unused
 * @param vpath_element path element with connection data
 * @return 0 if success, -1 otherwise
 */

static int
sftpfs_open_archive (struct vfs_s_super *super, const vfs_path_t * vpath,
                     const vfs_path_element_t * vpath_element)
{
    GError *mcerror = NULL;
    sftpfs_super_t *sftpfs_super = SFTP_SUPER (super);
    int ret_value;

    (void) vpath;

    if (vpath_element->host == NULL || *vpath_element->host == '\0')
    {
        vfs_print_message ("%s", _("sftp: Invalid host name."));
        vpath_element->class->verrno = EPERM;
        return -1;
    }

    sftpfs_super->original_connection_info = vfs_path_element_clone (vpath_element);
    super->path_element = vfs_path_element_clone (vpath_element);

    sftpfs_fill_connection_data_from_config (super, &mcerror);
    if (mc_error_message (&mcerror, &ret_value))
    {
        vpath_element->class->verrno = ret_value;
        return -1;
    }

    super->root =
        vfs_s_new_inode (vpath_element->class, super,
                         vfs_s_default_stat (vpath_element->class, S_IFDIR | 0755));

    ret_value = sftpfs_open_connection (super, &mcerror);
    mc_error_message (&mcerror, NULL);
    return ret_value;
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for closing connection.
 *
 * @param me    unused
 * @param super connection data
 */

static void
sftpfs_free_archive (struct vfs_class *me, struct vfs_s_super *super)
{
    GError *mcerror = NULL;

    (void) me;

    sftpfs_close_connection (super, "Normal Shutdown", &mcerror);

    vfs_path_element_free (SFTP_SUPER (super)->original_connection_info);

    mc_error_message (&mcerror, NULL);
}

/* --------------------------------------------------------------------------------------------- */
/**
 * Callback for getting directory content.
 *
 * @param me          unused
 * @param dir         unused
 * @param remote_path unused
 * @return always 0
 */

static int
sftpfs_cb_dir_load (struct vfs_class *me, struct vfs_s_inode *dir, const char *remote_path)
{
    (void) me;
    (void) dir;
    (void) remote_path;

    return 0;
}

/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
 * Initialization of SFTP Virtual File Sysytem.
 */

void
vfs_init_sftpfs (void)
{
    tcp_init ();

    vfs_init_subclass (&sftpfs_subclass, "sftpfs", VFSF_NOLINKS | VFSF_REMOTE, "sftp");

    vfs_sftpfs_ops->init = sftpfs_cb_init;
    vfs_sftpfs_ops->done = sftpfs_cb_done;

    vfs_sftpfs_ops->fill_names = sftpfs_cb_fill_names;

    vfs_sftpfs_ops->opendir = sftpfs_cb_opendir;
    vfs_sftpfs_ops->readdir = sftpfs_cb_readdir;
    vfs_sftpfs_ops->closedir = sftpfs_cb_closedir;
    vfs_sftpfs_ops->mkdir = sftpfs_cb_mkdir;
    vfs_sftpfs_ops->rmdir = sftpfs_cb_rmdir;

    vfs_sftpfs_ops->stat = sftpfs_cb_stat;
    vfs_sftpfs_ops->lstat = sftpfs_cb_lstat;
    vfs_sftpfs_ops->fstat = sftpfs_cb_fstat;
    vfs_sftpfs_ops->readlink = sftpfs_cb_readlink;
    vfs_sftpfs_ops->symlink = sftpfs_cb_symlink;
    vfs_sftpfs_ops->link = sftpfs_cb_link;
    vfs_sftpfs_ops->utime = sftpfs_cb_utime;
    vfs_sftpfs_ops->mknod = sftpfs_cb_mknod;
    vfs_sftpfs_ops->chown = sftpfs_cb_chown;
    vfs_sftpfs_ops->chmod = sftpfs_cb_chmod;

    vfs_sftpfs_ops->open = sftpfs_cb_open;
    vfs_sftpfs_ops->read = sftpfs_cb_read;
    vfs_sftpfs_ops->write = sftpfs_cb_write;
    vfs_sftpfs_ops->close = sftpfs_cb_close;
    vfs_sftpfs_ops->lseek = sftpfs_cb_lseek;
    vfs_sftpfs_ops->unlink = sftpfs_cb_unlink;
    vfs_sftpfs_ops->rename = sftpfs_cb_rename;
    vfs_sftpfs_ops->ferrno = sftpfs_cb_errno;

    sftpfs_subclass.archive_same = sftpfs_archive_same;
    sftpfs_subclass.new_archive = sftpfs_new_archive;
    sftpfs_subclass.open_archive = sftpfs_open_archive;
    sftpfs_subclass.free_archive = sftpfs_free_archive;
    sftpfs_subclass.fh_new = sftpfs_fh_new;
    sftpfs_subclass.dir_load = sftpfs_cb_dir_load;

    vfs_register_class (vfs_sftpfs_ops);
}

/* --------------------------------------------------------------------------------------------- */