1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
17 *
18 * Author: Alexander Larsson <alexl@redhat.com>
19 */
20
21 #include "config.h"
22
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <string.h>
26 #include <errno.h>
27 #include <fcntl.h>
28 #if G_OS_UNIX
29 #include <dirent.h>
30 #include <unistd.h>
31 #endif
32
33 #if HAVE_SYS_STATFS_H
34 #include <sys/statfs.h>
35 #endif
36 #if HAVE_SYS_STATVFS_H
37 #include <sys/statvfs.h>
38 #endif
39 #if HAVE_SYS_VFS_H
40 #include <sys/vfs.h>
41 #elif HAVE_SYS_MOUNT_H
42 #if HAVE_SYS_PARAM_H
43 #include <sys/param.h>
44 #endif
45 #include <sys/mount.h>
46 #endif
47
48 #ifndef O_BINARY
49 #define O_BINARY 0
50 #endif
51
52 #include "gfileattribute.h"
53 #include "glocalfile.h"
54 #include "glocalfileinfo.h"
55 #include "glocalfileenumerator.h"
56 #include "glocalfileinputstream.h"
57 #include "glocalfileoutputstream.h"
58 #include "glocalfileiostream.h"
59 #include "glocalfilemonitor.h"
60 #include "gmountprivate.h"
61 #include "gunixmounts.h"
62 #include "gioerror.h"
63 #include <glib/gstdio.h>
64 #include <glib/gstdioprivate.h>
65 #include "glibintl.h"
66 #ifdef G_OS_UNIX
67 #include "glib-unix.h"
68 #include "gportalsupport.h"
69 #include "gtrashportal.h"
70 #endif
71
72 #include "glib-private.h"
73
74 #ifdef G_OS_WIN32
75 #include <windows.h>
76 #include <io.h>
77 #include <direct.h>
78
79 #ifndef FILE_READ_ONLY_VOLUME
80 #define FILE_READ_ONLY_VOLUME 0x00080000
81 #endif
82
83 #ifndef S_ISDIR
84 #define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
85 #endif
86 #ifndef S_ISLNK
87 #define S_ISLNK(m) (0)
88 #endif
89
90 #ifndef ECANCELED
91 #define ECANCELED 105
92 #endif
93 #endif
94
95
96 static void g_local_file_file_iface_init (GFileIface *iface);
97
98 static GFileAttributeInfoList *local_writable_attributes = NULL;
99 static /* GFileAttributeInfoList * */ gsize local_writable_namespaces = 0;
100
101 struct _GLocalFile
102 {
103 GObject parent_instance;
104
105 char *filename;
106 };
107
108 #define g_local_file_get_type _g_local_file_get_type
109 G_DEFINE_TYPE_WITH_CODE (GLocalFile, g_local_file, G_TYPE_OBJECT,
110 G_IMPLEMENT_INTERFACE (G_TYPE_FILE,
111 g_local_file_file_iface_init))
112
113 static char *find_mountpoint_for (const char *file, dev_t dev, gboolean resolve_basename_symlink);
114
115 #ifndef G_OS_WIN32
116 static gboolean is_remote_fs_type (const gchar *fsname);
117 #endif
118
119 static void
g_local_file_finalize(GObject * object)120 g_local_file_finalize (GObject *object)
121 {
122 GLocalFile *local;
123
124 local = G_LOCAL_FILE (object);
125
126 g_free (local->filename);
127
128 G_OBJECT_CLASS (g_local_file_parent_class)->finalize (object);
129 }
130
131 static void
g_local_file_class_init(GLocalFileClass * klass)132 g_local_file_class_init (GLocalFileClass *klass)
133 {
134 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
135 GFileAttributeInfoList *list;
136
137 gobject_class->finalize = g_local_file_finalize;
138
139 /* Set up attribute lists */
140
141 /* Writable attributes: */
142
143 list = g_file_attribute_info_list_new ();
144
145 g_file_attribute_info_list_add (list,
146 G_FILE_ATTRIBUTE_UNIX_MODE,
147 G_FILE_ATTRIBUTE_TYPE_UINT32,
148 G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE |
149 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
150
151 #ifdef G_OS_UNIX
152 g_file_attribute_info_list_add (list,
153 G_FILE_ATTRIBUTE_UNIX_UID,
154 G_FILE_ATTRIBUTE_TYPE_UINT32,
155 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
156 g_file_attribute_info_list_add (list,
157 G_FILE_ATTRIBUTE_UNIX_GID,
158 G_FILE_ATTRIBUTE_TYPE_UINT32,
159 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
160 #endif
161
162 #ifdef HAVE_SYMLINK
163 g_file_attribute_info_list_add (list,
164 G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET,
165 G_FILE_ATTRIBUTE_TYPE_BYTE_STRING,
166 0);
167 #endif
168
169 #ifdef HAVE_UTIMES
170 g_file_attribute_info_list_add (list,
171 G_FILE_ATTRIBUTE_TIME_MODIFIED,
172 G_FILE_ATTRIBUTE_TYPE_UINT64,
173 G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE |
174 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
175 g_file_attribute_info_list_add (list,
176 G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC,
177 G_FILE_ATTRIBUTE_TYPE_UINT32,
178 G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE |
179 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
180 /* When copying, the target file is accessed. Replicating
181 * the source access time does not make sense in this case.
182 */
183 g_file_attribute_info_list_add (list,
184 G_FILE_ATTRIBUTE_TIME_ACCESS,
185 G_FILE_ATTRIBUTE_TYPE_UINT64,
186 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
187 g_file_attribute_info_list_add (list,
188 G_FILE_ATTRIBUTE_TIME_ACCESS_USEC,
189 G_FILE_ATTRIBUTE_TYPE_UINT32,
190 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
191 #endif
192
193 local_writable_attributes = list;
194 }
195
196 static void
g_local_file_init(GLocalFile * local)197 g_local_file_init (GLocalFile *local)
198 {
199 }
200
201 const char *
_g_local_file_get_filename(GLocalFile * file)202 _g_local_file_get_filename (GLocalFile *file)
203 {
204 return file->filename;
205 }
206
207 GFile *
_g_local_file_new(const char * filename)208 _g_local_file_new (const char *filename)
209 {
210 GLocalFile *local;
211
212 local = g_object_new (G_TYPE_LOCAL_FILE, NULL);
213 local->filename = g_canonicalize_filename (filename, NULL);
214
215 return G_FILE (local);
216 }
217
218 /*< internal >
219 * g_local_file_new_from_dirname_and_basename:
220 * @dirname: an absolute, canonical directory name
221 * @basename: the name of a child inside @dirname
222 *
223 * Creates a #GFile from @dirname and @basename.
224 *
225 * This is more efficient than pasting the fields together for yourself
226 * and creating a #GFile from the result, and also more efficient than
227 * creating a #GFile for the dirname and using g_file_get_child().
228 *
229 * @dirname must be canonical, as per GLocalFile's opinion of what
230 * canonical means. This means that you should only pass strings that
231 * were returned by _g_local_file_get_filename().
232 *
233 * Returns: a #GFile
234 */
235 GFile *
g_local_file_new_from_dirname_and_basename(const gchar * dirname,const gchar * basename)236 g_local_file_new_from_dirname_and_basename (const gchar *dirname,
237 const gchar *basename)
238 {
239 GLocalFile *local;
240
241 g_return_val_if_fail (dirname != NULL, NULL);
242 g_return_val_if_fail (basename && basename[0] && !strchr (basename, '/'), NULL);
243
244 local = g_object_new (G_TYPE_LOCAL_FILE, NULL);
245 local->filename = g_build_filename (dirname, basename, NULL);
246
247 return G_FILE (local);
248 }
249
250 static gboolean
g_local_file_is_native(GFile * file)251 g_local_file_is_native (GFile *file)
252 {
253 return TRUE;
254 }
255
256 static gboolean
g_local_file_has_uri_scheme(GFile * file,const char * uri_scheme)257 g_local_file_has_uri_scheme (GFile *file,
258 const char *uri_scheme)
259 {
260 return g_ascii_strcasecmp (uri_scheme, "file") == 0;
261 }
262
263 static char *
g_local_file_get_uri_scheme(GFile * file)264 g_local_file_get_uri_scheme (GFile *file)
265 {
266 return g_strdup ("file");
267 }
268
269 static char *
g_local_file_get_basename(GFile * file)270 g_local_file_get_basename (GFile *file)
271 {
272 return g_path_get_basename (G_LOCAL_FILE (file)->filename);
273 }
274
275 static char *
g_local_file_get_path(GFile * file)276 g_local_file_get_path (GFile *file)
277 {
278 return g_strdup (G_LOCAL_FILE (file)->filename);
279 }
280
281 static char *
g_local_file_get_uri(GFile * file)282 g_local_file_get_uri (GFile *file)
283 {
284 return g_filename_to_uri (G_LOCAL_FILE (file)->filename, NULL, NULL);
285 }
286
287 static gboolean
get_filename_charset(const gchar ** filename_charset)288 get_filename_charset (const gchar **filename_charset)
289 {
290 const gchar **charsets;
291 gboolean is_utf8;
292
293 is_utf8 = g_get_filename_charsets (&charsets);
294
295 if (filename_charset)
296 *filename_charset = charsets[0];
297
298 return is_utf8;
299 }
300
301 static gboolean
name_is_valid_for_display(const char * string,gboolean is_valid_utf8)302 name_is_valid_for_display (const char *string,
303 gboolean is_valid_utf8)
304 {
305 char c;
306
307 if (!is_valid_utf8 &&
308 !g_utf8_validate (string, -1, NULL))
309 return FALSE;
310
311 while ((c = *string++) != 0)
312 {
313 if (g_ascii_iscntrl (c))
314 return FALSE;
315 }
316
317 return TRUE;
318 }
319
320 static char *
g_local_file_get_parse_name(GFile * file)321 g_local_file_get_parse_name (GFile *file)
322 {
323 const char *filename;
324 char *parse_name;
325 const gchar *charset;
326 char *utf8_filename;
327 char *roundtripped_filename;
328 gboolean free_utf8_filename;
329 gboolean is_valid_utf8;
330 char *escaped_path;
331
332 filename = G_LOCAL_FILE (file)->filename;
333 if (get_filename_charset (&charset))
334 {
335 utf8_filename = (char *)filename;
336 free_utf8_filename = FALSE;
337 is_valid_utf8 = FALSE; /* Can't guarantee this */
338 }
339 else
340 {
341 utf8_filename = g_convert (filename, -1,
342 "UTF-8", charset, NULL, NULL, NULL);
343 free_utf8_filename = TRUE;
344 is_valid_utf8 = TRUE;
345
346 if (utf8_filename != NULL)
347 {
348 /* Make sure we can roundtrip: */
349 roundtripped_filename = g_convert (utf8_filename, -1,
350 charset, "UTF-8", NULL, NULL, NULL);
351
352 if (roundtripped_filename == NULL ||
353 strcmp (filename, roundtripped_filename) != 0)
354 {
355 g_free (utf8_filename);
356 utf8_filename = NULL;
357 }
358
359 g_free (roundtripped_filename);
360 }
361 }
362
363 if (utf8_filename != NULL &&
364 name_is_valid_for_display (utf8_filename, is_valid_utf8))
365 {
366 if (free_utf8_filename)
367 parse_name = utf8_filename;
368 else
369 parse_name = g_strdup (utf8_filename);
370 }
371 else
372 {
373 #ifdef G_OS_WIN32
374 char *dup_filename, *p, *backslash;
375
376 /* Turn backslashes into forward slashes like
377 * g_filename_to_uri() would do (but we can't use that because
378 * it doesn't output IRIs).
379 */
380 dup_filename = g_strdup (filename);
381 filename = p = dup_filename;
382
383 while ((backslash = strchr (p, '\\')) != NULL)
384 {
385 *backslash = '/';
386 p = backslash + 1;
387 }
388 #endif
389
390 escaped_path = g_uri_escape_string (filename,
391 G_URI_RESERVED_CHARS_ALLOWED_IN_PATH_ELEMENT "/",
392 TRUE);
393 parse_name = g_strconcat ("file://",
394 (*escaped_path != '/') ? "/" : "",
395 escaped_path,
396 NULL);
397
398 g_free (escaped_path);
399 #ifdef G_OS_WIN32
400 g_free (dup_filename);
401 #endif
402 if (free_utf8_filename)
403 g_free (utf8_filename);
404 }
405
406 return parse_name;
407 }
408
409 static GFile *
g_local_file_get_parent(GFile * file)410 g_local_file_get_parent (GFile *file)
411 {
412 GLocalFile *local = G_LOCAL_FILE (file);
413 const char *non_root;
414 char *dirname;
415 GFile *parent;
416
417 /* Check for root; local->filename is guaranteed to be absolute, so
418 * g_path_skip_root() should never return NULL. */
419 non_root = g_path_skip_root (local->filename);
420 g_assert (non_root != NULL);
421
422 if (*non_root == 0)
423 return NULL;
424
425 dirname = g_path_get_dirname (local->filename);
426 parent = _g_local_file_new (dirname);
427 g_free (dirname);
428 return parent;
429 }
430
431 static GFile *
g_local_file_dup(GFile * file)432 g_local_file_dup (GFile *file)
433 {
434 GLocalFile *local = G_LOCAL_FILE (file);
435
436 return _g_local_file_new (local->filename);
437 }
438
439 static guint
g_local_file_hash(GFile * file)440 g_local_file_hash (GFile *file)
441 {
442 GLocalFile *local = G_LOCAL_FILE (file);
443
444 return g_str_hash (local->filename);
445 }
446
447 static gboolean
g_local_file_equal(GFile * file1,GFile * file2)448 g_local_file_equal (GFile *file1,
449 GFile *file2)
450 {
451 GLocalFile *local1 = G_LOCAL_FILE (file1);
452 GLocalFile *local2 = G_LOCAL_FILE (file2);
453
454 return g_str_equal (local1->filename, local2->filename);
455 }
456
457 static const char *
match_prefix(const char * path,const char * prefix)458 match_prefix (const char *path,
459 const char *prefix)
460 {
461 int prefix_len;
462
463 prefix_len = strlen (prefix);
464 if (strncmp (path, prefix, prefix_len) != 0)
465 return NULL;
466
467 /* Handle the case where prefix is the root, so that
468 * the IS_DIR_SEPRARATOR check below works */
469 if (prefix_len > 0 &&
470 G_IS_DIR_SEPARATOR (prefix[prefix_len-1]))
471 prefix_len--;
472
473 return path + prefix_len;
474 }
475
476 static gboolean
g_local_file_prefix_matches(GFile * parent,GFile * descendant)477 g_local_file_prefix_matches (GFile *parent,
478 GFile *descendant)
479 {
480 GLocalFile *parent_local = G_LOCAL_FILE (parent);
481 GLocalFile *descendant_local = G_LOCAL_FILE (descendant);
482 const char *remainder;
483
484 remainder = match_prefix (descendant_local->filename, parent_local->filename);
485 if (remainder != NULL && G_IS_DIR_SEPARATOR (*remainder))
486 return TRUE;
487 return FALSE;
488 }
489
490 static char *
g_local_file_get_relative_path(GFile * parent,GFile * descendant)491 g_local_file_get_relative_path (GFile *parent,
492 GFile *descendant)
493 {
494 GLocalFile *parent_local = G_LOCAL_FILE (parent);
495 GLocalFile *descendant_local = G_LOCAL_FILE (descendant);
496 const char *remainder;
497
498 remainder = match_prefix (descendant_local->filename, parent_local->filename);
499
500 if (remainder != NULL && G_IS_DIR_SEPARATOR (*remainder))
501 return g_strdup (remainder + 1);
502 return NULL;
503 }
504
505 static GFile *
g_local_file_resolve_relative_path(GFile * file,const char * relative_path)506 g_local_file_resolve_relative_path (GFile *file,
507 const char *relative_path)
508 {
509 GLocalFile *local = G_LOCAL_FILE (file);
510 char *filename;
511 GFile *child;
512
513 if (g_path_is_absolute (relative_path))
514 return _g_local_file_new (relative_path);
515
516 filename = g_build_filename (local->filename, relative_path, NULL);
517 child = _g_local_file_new (filename);
518 g_free (filename);
519
520 return child;
521 }
522
523 static GFileEnumerator *
g_local_file_enumerate_children(GFile * file,const char * attributes,GFileQueryInfoFlags flags,GCancellable * cancellable,GError ** error)524 g_local_file_enumerate_children (GFile *file,
525 const char *attributes,
526 GFileQueryInfoFlags flags,
527 GCancellable *cancellable,
528 GError **error)
529 {
530 GLocalFile *local = G_LOCAL_FILE (file);
531 return _g_local_file_enumerator_new (local,
532 attributes, flags,
533 cancellable, error);
534 }
535
536 static GFile *
g_local_file_get_child_for_display_name(GFile * file,const char * display_name,GError ** error)537 g_local_file_get_child_for_display_name (GFile *file,
538 const char *display_name,
539 GError **error)
540 {
541 GFile *new_file;
542 char *basename;
543
544 basename = g_filename_from_utf8 (display_name, -1, NULL, NULL, NULL);
545 if (basename == NULL)
546 {
547 g_set_error (error, G_IO_ERROR,
548 G_IO_ERROR_INVALID_FILENAME,
549 _("Invalid filename %s"), display_name);
550 return NULL;
551 }
552
553 new_file = g_file_get_child (file, basename);
554 g_free (basename);
555
556 return new_file;
557 }
558
559 #if defined(USE_STATFS) && !defined(HAVE_STRUCT_STATFS_F_FSTYPENAME)
560 static const char *
get_fs_type(long f_type)561 get_fs_type (long f_type)
562 {
563 /* filesystem ids taken from linux manpage */
564 switch (f_type)
565 {
566 case 0xadf5:
567 return "adfs";
568 case 0x5346414f:
569 return "afs";
570 case 0x0187:
571 return "autofs";
572 case 0xADFF:
573 return "affs";
574 case 0x62646576:
575 return "bdevfs";
576 case 0x42465331:
577 return "befs";
578 case 0x1BADFACE:
579 return "bfs";
580 case 0x42494e4d:
581 return "binfmt_misc";
582 case 0x9123683E:
583 return "btrfs";
584 case 0x73727279:
585 return "btrfs_test_fs";
586 case 0x27e0eb:
587 return "cgroup";
588 case 0x63677270:
589 return "cgroup2";
590 case 0xFF534D42:
591 return "cifs";
592 case 0x73757245:
593 return "coda";
594 case 0x012FF7B7:
595 return "coh";
596 case 0x62656570:
597 return "configfs";
598 case 0x28cd3d45:
599 return "cramfs";
600 case 0x64626720:
601 return "debugfs";
602 case 0x1373:
603 return "devfs";
604 case 0x1cd1:
605 return "devpts";
606 case 0xf15f:
607 return "ecryptfs";
608 case 0xde5e81e4:
609 return "efivarfs";
610 case 0x00414A53:
611 return "efs";
612 case 0x2011BAB0UL:
613 return "exfat";
614 case 0x137D:
615 return "ext";
616 case 0xEF51:
617 return "ext2";
618 case 0xEF53:
619 return "ext3/ext4";
620 case 0xF2F52010:
621 return "f2fs";
622 case 0x65735546:
623 return "fuse";
624 case 0x65735543:
625 return "fusectl";
626 case 0xBAD1DEA:
627 return "futexfs";
628 case 0x4244:
629 return "hfs";
630 case 0x00c0ffee:
631 return "hostfs";
632 case 0xF995E849:
633 return "hpfs";
634 case 0x958458f6:
635 return "hugetlbfs";
636 case 0x9660:
637 return "isofs";
638 case 0x72b6:
639 return "jffs2";
640 case 0x3153464a:
641 return "jfs";
642 case 0x137F:
643 return "minix";
644 case 0x138F:
645 return "minix2";
646 case 0x2468:
647 return "minix2";
648 case 0x2478:
649 return "minix22";
650 case 0x4d5a:
651 return "minix3";
652 case 0x19800202:
653 return "mqueue";
654 case 0x4d44:
655 return "msdos";
656 case 0x564c:
657 return "ncp";
658 case 0x6969:
659 return "nfs";
660 case 0x3434:
661 return "nilfs";
662 case 0x6e736673:
663 return "nsfs";
664 case 0x5346544e:
665 return "ntfs";
666 case 0x7461636f:
667 return "ocfs2";
668 case 0x9fa1:
669 return "openprom";
670 case 0x794c7630:
671 return "overlay";
672 case 0x50495045:
673 return "pipefs";
674 case 0x9fa0:
675 return "proc";
676 case 0x6165676C:
677 return "pstore";
678 case 0x002f:
679 return "qnx4";
680 case 0x68191122:
681 return "qnx6";
682 case 0x858458f6:
683 return "ramfs";
684 case 0x52654973:
685 return "reiserfs";
686 case 0x7275:
687 return "romfs";
688 case 0x67596969:
689 return "rpc_pipefs";
690 case 0x73636673:
691 return "securityfs";
692 case 0xf97cff8c:
693 return "selinuxfs";
694 case 0x43415d53:
695 return "smackfs";
696 case 0x517B:
697 return "smb";
698 case 0xfe534d42:
699 return "smb2";
700 case 0x534F434B:
701 return "sockfs";
702 case 0x73717368:
703 return "squashfs";
704 case 0x62656572:
705 return "sysfs";
706 case 0x012FF7B6:
707 return "sysv2";
708 case 0x012FF7B5:
709 return "sysv4";
710 case 0x01021994:
711 return "tmpfs";
712 case 0x74726163:
713 return "tracefs";
714 case 0x15013346:
715 return "udf";
716 case 0x00011954:
717 return "ufs";
718 case 0x9fa2:
719 return "usbdevice";
720 case 0x01021997:
721 return "v9fs";
722 case 0xa501FCF5:
723 return "vxfs";
724 case 0xabba1974:
725 return "xenfs";
726 case 0x012FF7B4:
727 return "xenix";
728 case 0x58465342:
729 return "xfs";
730 case 0x012FD16D:
731 return "xiafs";
732 case 0x52345362:
733 return "reiser4";
734 default:
735 return NULL;
736 }
737 }
738 #endif
739
740 #ifndef G_OS_WIN32
741
742 G_LOCK_DEFINE_STATIC(mount_info_hash);
743 static GHashTable *mount_info_hash = NULL;
744 static guint64 mount_info_hash_cache_time = 0;
745
746 typedef enum {
747 MOUNT_INFO_READONLY = 1<<0
748 } MountInfo;
749
750 static gboolean
device_equal(gconstpointer v1,gconstpointer v2)751 device_equal (gconstpointer v1,
752 gconstpointer v2)
753 {
754 return *(dev_t *)v1 == *(dev_t *)v2;
755 }
756
757 static guint
device_hash(gconstpointer v)758 device_hash (gconstpointer v)
759 {
760 return (guint) *(dev_t *)v;
761 }
762
763 static void
get_mount_info(GFileInfo * fs_info,const char * path,GFileAttributeMatcher * matcher)764 get_mount_info (GFileInfo *fs_info,
765 const char *path,
766 GFileAttributeMatcher *matcher)
767 {
768 GStatBuf buf;
769 gboolean got_info;
770 gpointer info_as_ptr;
771 guint mount_info;
772 char *mountpoint;
773 dev_t *dev;
774 GUnixMountEntry *mount;
775 guint64 cache_time;
776
777 if (g_lstat (path, &buf) != 0)
778 return;
779
780 G_LOCK (mount_info_hash);
781
782 if (mount_info_hash == NULL)
783 mount_info_hash = g_hash_table_new_full (device_hash, device_equal,
784 g_free, NULL);
785
786
787 if (g_unix_mounts_changed_since (mount_info_hash_cache_time))
788 g_hash_table_remove_all (mount_info_hash);
789
790 got_info = g_hash_table_lookup_extended (mount_info_hash,
791 &buf.st_dev,
792 NULL,
793 &info_as_ptr);
794
795 G_UNLOCK (mount_info_hash);
796
797 mount_info = GPOINTER_TO_UINT (info_as_ptr);
798
799 if (!got_info)
800 {
801 mount_info = 0;
802
803 mountpoint = find_mountpoint_for (path, buf.st_dev, FALSE);
804 if (mountpoint == NULL)
805 mountpoint = g_strdup ("/");
806
807 mount = g_unix_mount_at (mountpoint, &cache_time);
808 if (mount)
809 {
810 if (g_unix_mount_is_readonly (mount))
811 mount_info |= MOUNT_INFO_READONLY;
812
813 g_unix_mount_free (mount);
814 }
815
816 g_free (mountpoint);
817
818 dev = g_new0 (dev_t, 1);
819 *dev = buf.st_dev;
820
821 G_LOCK (mount_info_hash);
822 mount_info_hash_cache_time = cache_time;
823 g_hash_table_insert (mount_info_hash, dev, GUINT_TO_POINTER (mount_info));
824 G_UNLOCK (mount_info_hash);
825 }
826
827 if (mount_info & MOUNT_INFO_READONLY)
828 g_file_info_set_attribute_boolean (fs_info, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY, TRUE);
829 }
830
831 #endif
832
833 #ifdef G_OS_WIN32
834
835 static wchar_t *
get_volume_for_path(const char * path)836 get_volume_for_path (const char *path)
837 {
838 long len;
839 wchar_t *wpath;
840 wchar_t *result;
841
842 wpath = g_utf8_to_utf16 (path, -1, NULL, NULL, NULL);
843 result = g_new (wchar_t, MAX_PATH);
844
845 if (!GetVolumePathNameW (wpath, result, MAX_PATH))
846 {
847 char *msg = g_win32_error_message (GetLastError ());
848 g_critical ("GetVolumePathName failed: %s", msg);
849 g_free (msg);
850 g_free (result);
851 g_free (wpath);
852 return NULL;
853 }
854
855 len = wcslen (result);
856 if (len > 0 && result[len-1] != L'\\')
857 {
858 result = g_renew (wchar_t, result, len + 2);
859 result[len] = L'\\';
860 result[len + 1] = 0;
861 }
862
863 g_free (wpath);
864 return result;
865 }
866
867 static char *
find_mountpoint_for(const char * file,dev_t dev,gboolean resolve_basename_symlink)868 find_mountpoint_for (const char *file, dev_t dev, gboolean resolve_basename_symlink)
869 {
870 wchar_t *wpath;
871 char *utf8_path;
872
873 wpath = get_volume_for_path (file);
874 if (!wpath)
875 return NULL;
876
877 utf8_path = g_utf16_to_utf8 (wpath, -1, NULL, NULL, NULL);
878
879 g_free (wpath);
880 return utf8_path;
881 }
882
883 static void
get_filesystem_readonly(GFileInfo * info,const char * path)884 get_filesystem_readonly (GFileInfo *info,
885 const char *path)
886 {
887 wchar_t *rootdir;
888
889 rootdir = get_volume_for_path (path);
890
891 if (rootdir)
892 {
893 DWORD flags;
894 if (GetVolumeInformationW (rootdir, NULL, 0, NULL, NULL, &flags, NULL, 0))
895 g_file_info_set_attribute_boolean (info, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY,
896 (flags & FILE_READ_ONLY_VOLUME) != 0);
897 }
898
899 g_free (rootdir);
900 }
901
902 #endif /* G_OS_WIN32 */
903
904 #pragma GCC diagnostic push
905 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
906 static void
g_set_io_error(GError ** error,const gchar * msg,GFile * file,gint errsv)907 g_set_io_error (GError **error,
908 const gchar *msg,
909 GFile *file,
910 gint errsv)
911 {
912 GLocalFile *local = G_LOCAL_FILE (file);
913 gchar *display_name;
914
915 display_name = g_filename_display_name (local->filename);
916 g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv),
917 msg, display_name, g_strerror (errsv));
918 g_free (display_name);
919 }
920 #pragma GCC diagnostic pop
921
922 static GFileInfo *
g_local_file_query_filesystem_info(GFile * file,const char * attributes,GCancellable * cancellable,GError ** error)923 g_local_file_query_filesystem_info (GFile *file,
924 const char *attributes,
925 GCancellable *cancellable,
926 GError **error)
927 {
928 GLocalFile *local = G_LOCAL_FILE (file);
929 GFileInfo *info;
930 int statfs_result = 0;
931 gboolean no_size;
932 #ifndef G_OS_WIN32
933 const char *fstype;
934 #ifdef USE_STATFS
935 guint64 block_size;
936 struct statfs statfs_buffer;
937 #elif defined(USE_STATVFS)
938 guint64 block_size;
939 struct statvfs statfs_buffer;
940 #endif /* USE_STATFS */
941 #endif /* G_OS_WIN32 */
942 GFileAttributeMatcher *attribute_matcher;
943
944 no_size = FALSE;
945
946 #ifdef USE_STATFS
947
948 #if STATFS_ARGS == 2
949 statfs_result = statfs (local->filename, &statfs_buffer);
950 #elif STATFS_ARGS == 4
951 statfs_result = statfs (local->filename, &statfs_buffer,
952 sizeof (statfs_buffer), 0);
953 #endif /* STATFS_ARGS == 2 */
954 block_size = statfs_buffer.f_bsize;
955
956 /* Many backends can't report free size (for instance the gvfs fuse
957 * backend for backend not supporting this), and set f_bfree to 0,
958 * but it can be 0 for real too. We treat the available == 0 and
959 * free == 0 case as "both of these are invalid", but only on file systems
960 * which are known to not support this (otherwise we can omit metadata for
961 * systems which are legitimately full). */
962 #if defined(__linux__)
963 if (statfs_result == 0 &&
964 statfs_buffer.f_bavail == 0 && statfs_buffer.f_bfree == 0 &&
965 (/* linux/ncp_fs.h: NCP_SUPER_MAGIC == 0x564c */
966 statfs_buffer.f_type == 0x564c ||
967 /* man statfs: FUSE_SUPER_MAGIC == 0x65735546 */
968 statfs_buffer.f_type == 0x65735546))
969 no_size = TRUE;
970 #endif /* __linux__ */
971
972 #elif defined(USE_STATVFS)
973 statfs_result = statvfs (local->filename, &statfs_buffer);
974 block_size = statfs_buffer.f_frsize;
975 #endif /* USE_STATFS */
976
977 if (statfs_result == -1)
978 {
979 int errsv = errno;
980
981 g_set_io_error (error,
982 _("Error getting filesystem info for %s: %s"),
983 file, errsv);
984 return NULL;
985 }
986
987 info = g_file_info_new ();
988
989 attribute_matcher = g_file_attribute_matcher_new (attributes);
990
991 if (!no_size &&
992 g_file_attribute_matcher_matches (attribute_matcher,
993 G_FILE_ATTRIBUTE_FILESYSTEM_FREE))
994 {
995 #ifdef G_OS_WIN32
996 gchar *localdir = g_path_get_dirname (local->filename);
997 wchar_t *wdirname = g_utf8_to_utf16 (localdir, -1, NULL, NULL, NULL);
998 ULARGE_INTEGER li;
999
1000 g_free (localdir);
1001 if (GetDiskFreeSpaceExW (wdirname, &li, NULL, NULL))
1002 g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_FREE, (guint64)li.QuadPart);
1003 g_free (wdirname);
1004 #else
1005 #if defined(USE_STATFS) || defined(USE_STATVFS)
1006 g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_FREE, block_size * statfs_buffer.f_bavail);
1007 #endif
1008 #endif
1009 }
1010 if (!no_size &&
1011 g_file_attribute_matcher_matches (attribute_matcher,
1012 G_FILE_ATTRIBUTE_FILESYSTEM_SIZE))
1013 {
1014 #ifdef G_OS_WIN32
1015 gchar *localdir = g_path_get_dirname (local->filename);
1016 wchar_t *wdirname = g_utf8_to_utf16 (localdir, -1, NULL, NULL, NULL);
1017 ULARGE_INTEGER li;
1018
1019 g_free (localdir);
1020 if (GetDiskFreeSpaceExW (wdirname, NULL, &li, NULL))
1021 g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_SIZE, (guint64)li.QuadPart);
1022 g_free (wdirname);
1023 #else
1024 #if defined(USE_STATFS) || defined(USE_STATVFS)
1025 g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_SIZE, block_size * statfs_buffer.f_blocks);
1026 #endif
1027 #endif /* G_OS_WIN32 */
1028 }
1029
1030 if (!no_size &&
1031 g_file_attribute_matcher_matches (attribute_matcher,
1032 G_FILE_ATTRIBUTE_FILESYSTEM_USED))
1033 {
1034 #ifdef G_OS_WIN32
1035 gchar *localdir = g_path_get_dirname (local->filename);
1036 wchar_t *wdirname = g_utf8_to_utf16 (localdir, -1, NULL, NULL, NULL);
1037 ULARGE_INTEGER li_free;
1038 ULARGE_INTEGER li_total;
1039
1040 g_free (localdir);
1041 if (GetDiskFreeSpaceExW (wdirname, &li_free, &li_total, NULL))
1042 g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_USED, (guint64)li_total.QuadPart - (guint64)li_free.QuadPart);
1043 g_free (wdirname);
1044 #else
1045 g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_USED, block_size * (statfs_buffer.f_blocks - statfs_buffer.f_bfree));
1046 #endif /* G_OS_WIN32 */
1047 }
1048
1049 #ifndef G_OS_WIN32
1050 #ifdef USE_STATFS
1051 #if defined(HAVE_STRUCT_STATFS_F_FSTYPENAME)
1052 fstype = statfs_buffer.f_fstypename;
1053 #else
1054 fstype = get_fs_type (statfs_buffer.f_type);
1055 #endif
1056
1057 #elif defined(USE_STATVFS)
1058 #if defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME)
1059 fstype = statfs_buffer.f_fstypename;
1060 #elif defined(HAVE_STRUCT_STATVFS_F_BASETYPE)
1061 fstype = statfs_buffer.f_basetype;
1062 #else
1063 fstype = NULL;
1064 #endif
1065 #endif /* USE_STATFS */
1066
1067 if (fstype &&
1068 g_file_attribute_matcher_matches (attribute_matcher,
1069 G_FILE_ATTRIBUTE_FILESYSTEM_TYPE))
1070 g_file_info_set_attribute_string (info, G_FILE_ATTRIBUTE_FILESYSTEM_TYPE, fstype);
1071 #endif /* G_OS_WIN32 */
1072
1073 if (g_file_attribute_matcher_matches (attribute_matcher,
1074 G_FILE_ATTRIBUTE_FILESYSTEM_READONLY))
1075 {
1076 #ifdef G_OS_WIN32
1077 get_filesystem_readonly (info, local->filename);
1078 #else
1079 get_mount_info (info, local->filename, attribute_matcher);
1080 #endif /* G_OS_WIN32 */
1081 }
1082
1083 #ifndef G_OS_WIN32
1084 if (g_file_attribute_matcher_matches (attribute_matcher,
1085 G_FILE_ATTRIBUTE_FILESYSTEM_REMOTE))
1086 g_file_info_set_attribute_boolean (info, G_FILE_ATTRIBUTE_FILESYSTEM_REMOTE,
1087 is_remote_fs_type (fstype));
1088 #endif
1089
1090 g_file_attribute_matcher_unref (attribute_matcher);
1091
1092 return info;
1093 }
1094
1095 static GMount *
g_local_file_find_enclosing_mount(GFile * file,GCancellable * cancellable,GError ** error)1096 g_local_file_find_enclosing_mount (GFile *file,
1097 GCancellable *cancellable,
1098 GError **error)
1099 {
1100 GLocalFile *local = G_LOCAL_FILE (file);
1101 GStatBuf buf;
1102 char *mountpoint;
1103 GMount *mount;
1104
1105 if (g_lstat (local->filename, &buf) != 0)
1106 goto error;
1107
1108 mountpoint = find_mountpoint_for (local->filename, buf.st_dev, FALSE);
1109 if (mountpoint == NULL)
1110 goto error;
1111
1112 mount = _g_mount_get_for_mount_path (mountpoint, cancellable);
1113 g_free (mountpoint);
1114 if (mount)
1115 return mount;
1116
1117 error:
1118 g_set_io_error (error,
1119 /* Translators: This is an error message when trying to find
1120 * the enclosing (user visible) mount of a file, but none
1121 * exists.
1122 */
1123 _("Containing mount for file %s not found"),
1124 file, 0);
1125
1126 return NULL;
1127 }
1128
1129 static GFile *
g_local_file_set_display_name(GFile * file,const char * display_name,GCancellable * cancellable,GError ** error)1130 g_local_file_set_display_name (GFile *file,
1131 const char *display_name,
1132 GCancellable *cancellable,
1133 GError **error)
1134 {
1135 GLocalFile *local, *new_local;
1136 GFile *new_file, *parent;
1137 GStatBuf statbuf;
1138 GVfsClass *class;
1139 GVfs *vfs;
1140 int errsv;
1141
1142 parent = g_file_get_parent (file);
1143 if (parent == NULL)
1144 {
1145 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
1146 _("Can’t rename root directory"));
1147 return NULL;
1148 }
1149
1150 new_file = g_file_get_child_for_display_name (parent, display_name, error);
1151 g_object_unref (parent);
1152
1153 if (new_file == NULL)
1154 return NULL;
1155 local = G_LOCAL_FILE (file);
1156 new_local = G_LOCAL_FILE (new_file);
1157
1158 if (g_lstat (new_local->filename, &statbuf) == -1)
1159 {
1160 errsv = errno;
1161
1162 if (errsv != ENOENT)
1163 {
1164 g_set_io_error (error, _("Error renaming file %s: %s"), new_file, errsv);
1165 return NULL;
1166 }
1167 }
1168 else
1169 {
1170 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_EXISTS,
1171 _("Can’t rename file, filename already exists"));
1172 return NULL;
1173 }
1174
1175 if (g_rename (local->filename, new_local->filename) == -1)
1176 {
1177 errsv = errno;
1178
1179 if (errsv == EINVAL)
1180 /* We can't get a rename file into itself error here,
1181 * so this must be an invalid filename, on e.g. FAT
1182 */
1183 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_FILENAME,
1184 _("Invalid filename"));
1185 else
1186 g_set_io_error (error,
1187 _("Error renaming file %s: %s"),
1188 file, errsv);
1189 g_object_unref (new_file);
1190 return NULL;
1191 }
1192
1193 vfs = g_vfs_get_default ();
1194 class = G_VFS_GET_CLASS (vfs);
1195 if (class->local_file_moved)
1196 class->local_file_moved (vfs, local->filename, new_local->filename);
1197
1198 return new_file;
1199 }
1200
1201 static GFileInfo *
g_local_file_query_info(GFile * file,const char * attributes,GFileQueryInfoFlags flags,GCancellable * cancellable,GError ** error)1202 g_local_file_query_info (GFile *file,
1203 const char *attributes,
1204 GFileQueryInfoFlags flags,
1205 GCancellable *cancellable,
1206 GError **error)
1207 {
1208 GLocalFile *local = G_LOCAL_FILE (file);
1209 GFileInfo *info;
1210 GFileAttributeMatcher *matcher;
1211 char *basename, *dirname;
1212 GLocalParentFileInfo parent_info;
1213
1214 matcher = g_file_attribute_matcher_new (attributes);
1215
1216 basename = g_path_get_basename (local->filename);
1217
1218 dirname = g_path_get_dirname (local->filename);
1219 _g_local_file_info_get_parent_info (dirname, matcher, &parent_info);
1220 g_free (dirname);
1221
1222 info = _g_local_file_info_get (basename, local->filename,
1223 matcher, flags, &parent_info,
1224 error);
1225
1226
1227 _g_local_file_info_free_parent_info (&parent_info);
1228 g_free (basename);
1229
1230 g_file_attribute_matcher_unref (matcher);
1231
1232 return info;
1233 }
1234
1235 static GFileAttributeInfoList *
g_local_file_query_settable_attributes(GFile * file,GCancellable * cancellable,GError ** error)1236 g_local_file_query_settable_attributes (GFile *file,
1237 GCancellable *cancellable,
1238 GError **error)
1239 {
1240 return g_file_attribute_info_list_ref (local_writable_attributes);
1241 }
1242
1243 static GFileAttributeInfoList *
g_local_file_query_writable_namespaces(GFile * file,GCancellable * cancellable,GError ** error)1244 g_local_file_query_writable_namespaces (GFile *file,
1245 GCancellable *cancellable,
1246 GError **error)
1247 {
1248 GFileAttributeInfoList *list;
1249 GVfsClass *class;
1250 GVfs *vfs;
1251
1252 if (g_once_init_enter (&local_writable_namespaces))
1253 {
1254 /* Writable namespaces: */
1255
1256 list = g_file_attribute_info_list_new ();
1257
1258 #ifdef HAVE_XATTR
1259 g_file_attribute_info_list_add (list,
1260 "xattr",
1261 G_FILE_ATTRIBUTE_TYPE_STRING,
1262 G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE |
1263 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
1264 g_file_attribute_info_list_add (list,
1265 "xattr-sys",
1266 G_FILE_ATTRIBUTE_TYPE_STRING,
1267 G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
1268 #endif
1269
1270 vfs = g_vfs_get_default ();
1271 class = G_VFS_GET_CLASS (vfs);
1272 if (class->add_writable_namespaces)
1273 class->add_writable_namespaces (vfs, list);
1274
1275 g_once_init_leave (&local_writable_namespaces, (gsize)list);
1276 }
1277 list = (GFileAttributeInfoList *)local_writable_namespaces;
1278
1279 return g_file_attribute_info_list_ref (list);
1280 }
1281
1282 static gboolean
g_local_file_set_attribute(GFile * file,const char * attribute,GFileAttributeType type,gpointer value_p,GFileQueryInfoFlags flags,GCancellable * cancellable,GError ** error)1283 g_local_file_set_attribute (GFile *file,
1284 const char *attribute,
1285 GFileAttributeType type,
1286 gpointer value_p,
1287 GFileQueryInfoFlags flags,
1288 GCancellable *cancellable,
1289 GError **error)
1290 {
1291 GLocalFile *local = G_LOCAL_FILE (file);
1292
1293 return _g_local_file_info_set_attribute (local->filename,
1294 attribute,
1295 type,
1296 value_p,
1297 flags,
1298 cancellable,
1299 error);
1300 }
1301
1302 static gboolean
g_local_file_set_attributes_from_info(GFile * file,GFileInfo * info,GFileQueryInfoFlags flags,GCancellable * cancellable,GError ** error)1303 g_local_file_set_attributes_from_info (GFile *file,
1304 GFileInfo *info,
1305 GFileQueryInfoFlags flags,
1306 GCancellable *cancellable,
1307 GError **error)
1308 {
1309 GLocalFile *local = G_LOCAL_FILE (file);
1310 int res, chained_res;
1311 GFileIface *default_iface;
1312
1313 res = _g_local_file_info_set_attributes (local->filename,
1314 info, flags,
1315 cancellable,
1316 error);
1317
1318 if (!res)
1319 error = NULL; /* Don't write over error if further errors */
1320
1321 default_iface = g_type_default_interface_peek (G_TYPE_FILE);
1322
1323 chained_res = (default_iface->set_attributes_from_info) (file, info, flags, cancellable, error);
1324
1325 return res && chained_res;
1326 }
1327
1328 static GFileInputStream *
g_local_file_read(GFile * file,GCancellable * cancellable,GError ** error)1329 g_local_file_read (GFile *file,
1330 GCancellable *cancellable,
1331 GError **error)
1332 {
1333 GLocalFile *local = G_LOCAL_FILE (file);
1334 int fd, ret;
1335 GLocalFileStat buf;
1336
1337 fd = g_open (local->filename, O_RDONLY|O_BINARY, 0);
1338 if (fd == -1)
1339 {
1340 int errsv = errno;
1341
1342 #ifdef G_OS_WIN32
1343 if (errsv == EACCES)
1344 {
1345 /* Exploit the fact that on W32 the glib filename encoding is UTF8 */
1346 ret = GLIB_PRIVATE_CALL (g_win32_stat_utf8) (local->filename, &buf);
1347 if (ret == 0 && S_ISDIR (buf.st_mode))
1348 errsv = EISDIR;
1349 }
1350 #endif
1351 g_set_io_error (error,
1352 _("Error opening file %s: %s"),
1353 file, errsv);
1354 return NULL;
1355 }
1356
1357 ret = g_local_file_fstat (fd, G_LOCAL_FILE_STAT_FIELD_TYPE, G_LOCAL_FILE_STAT_FIELD_ALL, &buf);
1358
1359 if (ret == 0 && S_ISDIR (_g_stat_mode (&buf)))
1360 {
1361 (void) g_close (fd, NULL);
1362 g_set_io_error (error,
1363 _("Error opening file %s: %s"),
1364 file, EISDIR);
1365 return NULL;
1366 }
1367
1368 return _g_local_file_input_stream_new (fd);
1369 }
1370
1371 static GFileOutputStream *
g_local_file_append_to(GFile * file,GFileCreateFlags flags,GCancellable * cancellable,GError ** error)1372 g_local_file_append_to (GFile *file,
1373 GFileCreateFlags flags,
1374 GCancellable *cancellable,
1375 GError **error)
1376 {
1377 return _g_local_file_output_stream_append (G_LOCAL_FILE (file)->filename,
1378 flags, cancellable, error);
1379 }
1380
1381 static GFileOutputStream *
g_local_file_create(GFile * file,GFileCreateFlags flags,GCancellable * cancellable,GError ** error)1382 g_local_file_create (GFile *file,
1383 GFileCreateFlags flags,
1384 GCancellable *cancellable,
1385 GError **error)
1386 {
1387 return _g_local_file_output_stream_create (G_LOCAL_FILE (file)->filename,
1388 FALSE, flags, NULL,
1389 cancellable, error);
1390 }
1391
1392 static GFileOutputStream *
g_local_file_replace(GFile * file,const char * etag,gboolean make_backup,GFileCreateFlags flags,GCancellable * cancellable,GError ** error)1393 g_local_file_replace (GFile *file,
1394 const char *etag,
1395 gboolean make_backup,
1396 GFileCreateFlags flags,
1397 GCancellable *cancellable,
1398 GError **error)
1399 {
1400 return _g_local_file_output_stream_replace (G_LOCAL_FILE (file)->filename,
1401 FALSE,
1402 etag, make_backup, flags, NULL,
1403 cancellable, error);
1404 }
1405
1406 static GFileIOStream *
g_local_file_open_readwrite(GFile * file,GCancellable * cancellable,GError ** error)1407 g_local_file_open_readwrite (GFile *file,
1408 GCancellable *cancellable,
1409 GError **error)
1410 {
1411 GFileOutputStream *output;
1412 GFileIOStream *res;
1413
1414 output = _g_local_file_output_stream_open (G_LOCAL_FILE (file)->filename,
1415 TRUE,
1416 cancellable, error);
1417 if (output == NULL)
1418 return NULL;
1419
1420 res = _g_local_file_io_stream_new (G_LOCAL_FILE_OUTPUT_STREAM (output));
1421 g_object_unref (output);
1422 return res;
1423 }
1424
1425 static GFileIOStream *
g_local_file_create_readwrite(GFile * file,GFileCreateFlags flags,GCancellable * cancellable,GError ** error)1426 g_local_file_create_readwrite (GFile *file,
1427 GFileCreateFlags flags,
1428 GCancellable *cancellable,
1429 GError **error)
1430 {
1431 GFileOutputStream *output;
1432 GFileIOStream *res;
1433
1434 output = _g_local_file_output_stream_create (G_LOCAL_FILE (file)->filename,
1435 TRUE, flags, NULL,
1436 cancellable, error);
1437 if (output == NULL)
1438 return NULL;
1439
1440 res = _g_local_file_io_stream_new (G_LOCAL_FILE_OUTPUT_STREAM (output));
1441 g_object_unref (output);
1442 return res;
1443 }
1444
1445 static GFileIOStream *
g_local_file_replace_readwrite(GFile * file,const char * etag,gboolean make_backup,GFileCreateFlags flags,GCancellable * cancellable,GError ** error)1446 g_local_file_replace_readwrite (GFile *file,
1447 const char *etag,
1448 gboolean make_backup,
1449 GFileCreateFlags flags,
1450 GCancellable *cancellable,
1451 GError **error)
1452 {
1453 GFileOutputStream *output;
1454 GFileIOStream *res;
1455
1456 output = _g_local_file_output_stream_replace (G_LOCAL_FILE (file)->filename,
1457 TRUE,
1458 etag, make_backup, flags, NULL,
1459 cancellable, error);
1460 if (output == NULL)
1461 return NULL;
1462
1463 res = _g_local_file_io_stream_new (G_LOCAL_FILE_OUTPUT_STREAM (output));
1464 g_object_unref (output);
1465 return res;
1466 }
1467
1468 static gboolean
g_local_file_delete(GFile * file,GCancellable * cancellable,GError ** error)1469 g_local_file_delete (GFile *file,
1470 GCancellable *cancellable,
1471 GError **error)
1472 {
1473 GLocalFile *local = G_LOCAL_FILE (file);
1474 GVfsClass *class;
1475 GVfs *vfs;
1476
1477 if (g_remove (local->filename) == -1)
1478 {
1479 int errsv = errno;
1480
1481 /* Posix allows EEXIST too, but the clearer error
1482 is G_IO_ERROR_NOT_FOUND, and it's what nautilus
1483 expects */
1484 if (errsv == EEXIST)
1485 errsv = ENOTEMPTY;
1486
1487 g_set_io_error (error,
1488 _("Error removing file %s: %s"),
1489 file, errsv);
1490 return FALSE;
1491 }
1492
1493 vfs = g_vfs_get_default ();
1494 class = G_VFS_GET_CLASS (vfs);
1495 if (class->local_file_removed)
1496 class->local_file_removed (vfs, local->filename);
1497
1498 return TRUE;
1499 }
1500
1501 #ifndef G_OS_WIN32
1502
1503 static char *
strip_trailing_slashes(const char * path)1504 strip_trailing_slashes (const char *path)
1505 {
1506 char *path_copy;
1507 int len;
1508
1509 path_copy = g_strdup (path);
1510 len = strlen (path_copy);
1511 while (len > 1 && path_copy[len-1] == '/')
1512 path_copy[--len] = 0;
1513
1514 return path_copy;
1515 }
1516
1517 static char *
expand_symlink(const char * link)1518 expand_symlink (const char *link)
1519 {
1520 char *resolved, *canonical, *parent, *link2;
1521 char symlink_value[4096];
1522 #ifdef G_OS_WIN32
1523 #else
1524 gssize res;
1525 #endif
1526
1527 #ifdef G_OS_WIN32
1528 #else
1529 res = readlink (link, symlink_value, sizeof (symlink_value) - 1);
1530
1531 if (res == -1)
1532 return g_strdup (link);
1533 symlink_value[res] = 0;
1534 #endif
1535
1536 if (g_path_is_absolute (symlink_value))
1537 return g_canonicalize_filename (symlink_value, NULL);
1538 else
1539 {
1540 link2 = strip_trailing_slashes (link);
1541 parent = g_path_get_dirname (link2);
1542 g_free (link2);
1543
1544 resolved = g_build_filename (parent, symlink_value, NULL);
1545 g_free (parent);
1546
1547 canonical = g_canonicalize_filename (resolved, NULL);
1548
1549 g_free (resolved);
1550
1551 return canonical;
1552 }
1553 }
1554
1555 static char *
expand_symlinks(const char * path,dev_t * dev)1556 expand_symlinks (const char *path,
1557 dev_t *dev)
1558 {
1559 char *tmp, *target;
1560 GStatBuf target_stat;
1561 int num_recursions;
1562
1563 target = g_strdup (path);
1564
1565 num_recursions = 0;
1566 do
1567 {
1568 if (g_lstat (target, &target_stat) != 0)
1569 {
1570 g_free (target);
1571 return NULL;
1572 }
1573
1574 if (S_ISLNK (target_stat.st_mode))
1575 {
1576 tmp = target;
1577 target = expand_symlink (target);
1578 g_free (tmp);
1579 }
1580
1581 num_recursions++;
1582
1583 #ifdef MAXSYMLINKS
1584 if (num_recursions > MAXSYMLINKS)
1585 #else
1586 /* 40 is used in kernel sources currently:
1587 * https://github.com/torvalds/linux/include/linux/namei.h
1588 */
1589 if (num_recursions > 40)
1590 #endif
1591 {
1592 g_free (target);
1593 return NULL;
1594 }
1595 }
1596 while (S_ISLNK (target_stat.st_mode));
1597
1598 if (dev)
1599 *dev = target_stat.st_dev;
1600
1601 return target;
1602 }
1603
1604 static char *
get_parent(const char * path,dev_t * parent_dev)1605 get_parent (const char *path,
1606 dev_t *parent_dev)
1607 {
1608 char *parent, *res;
1609 char *path_copy;
1610
1611 path_copy = strip_trailing_slashes (path);
1612
1613 parent = g_path_get_dirname (path_copy);
1614 if (strcmp (parent, ".") == 0)
1615 {
1616 g_free (parent);
1617 g_free (path_copy);
1618 return NULL;
1619 }
1620 g_free (path_copy);
1621
1622 res = expand_symlinks (parent, parent_dev);
1623 g_free (parent);
1624
1625 return res;
1626 }
1627
1628 static char *
expand_all_symlinks(const char * path)1629 expand_all_symlinks (const char *path)
1630 {
1631 char *parent, *parent_expanded;
1632 char *basename, *res;
1633 dev_t parent_dev;
1634
1635 parent = get_parent (path, &parent_dev);
1636 if (parent == NULL)
1637 return NULL;
1638
1639 if (g_strcmp0 (parent, "/") != 0)
1640 {
1641 parent_expanded = expand_all_symlinks (parent);
1642 basename = g_path_get_basename (path);
1643 res = g_build_filename (parent_expanded, basename, NULL);
1644 g_free (basename);
1645 g_free (parent_expanded);
1646 }
1647 else
1648 res = g_strdup (path);
1649
1650 g_free (parent);
1651
1652 return res;
1653 }
1654
1655 static char *
find_mountpoint_for(const char * file,dev_t dev,gboolean resolve_basename_symlink)1656 find_mountpoint_for (const char *file,
1657 dev_t dev,
1658 gboolean resolve_basename_symlink)
1659 {
1660 char *dir, *parent;
1661 dev_t dir_dev, parent_dev;
1662
1663 if (resolve_basename_symlink)
1664 {
1665 dir = expand_symlinks (file, NULL);
1666 if (dir == NULL)
1667 return NULL;
1668 }
1669 else
1670 dir = g_strdup (file);
1671
1672 dir_dev = dev;
1673
1674 while (g_strcmp0 (dir, "/") != 0)
1675 {
1676 parent = get_parent (dir, &parent_dev);
1677 if (parent == NULL)
1678 {
1679 g_free (dir);
1680 return NULL;
1681 }
1682
1683 if (parent_dev != dir_dev)
1684 {
1685 g_free (parent);
1686 return dir;
1687 }
1688
1689 g_free (dir);
1690 dir = parent;
1691 }
1692
1693 return dir;
1694 }
1695
1696 char *
_g_local_file_find_topdir_for(const char * file)1697 _g_local_file_find_topdir_for (const char *file)
1698 {
1699 char *dir;
1700 char *mountpoint = NULL;
1701 dev_t dir_dev;
1702
1703 dir = get_parent (file, &dir_dev);
1704 if (dir == NULL)
1705 return NULL;
1706
1707 mountpoint = find_mountpoint_for (dir, dir_dev, TRUE);
1708 g_free (dir);
1709
1710 return mountpoint;
1711 }
1712
1713 static char *
get_unique_filename(const char * basename,int id)1714 get_unique_filename (const char *basename,
1715 int id)
1716 {
1717 const char *dot;
1718
1719 if (id == 1)
1720 return g_strdup (basename);
1721
1722 dot = strchr (basename, '.');
1723 if (dot)
1724 return g_strdup_printf ("%.*s.%d%s", (int)(dot - basename), basename, id, dot);
1725 else
1726 return g_strdup_printf ("%s.%d", basename, id);
1727 }
1728
1729 static gboolean
path_has_prefix(const char * path,const char * prefix)1730 path_has_prefix (const char *path,
1731 const char *prefix)
1732 {
1733 int prefix_len;
1734
1735 if (prefix == NULL)
1736 return TRUE;
1737
1738 prefix_len = strlen (prefix);
1739
1740 if (strncmp (path, prefix, prefix_len) == 0 &&
1741 (prefix_len == 0 || /* empty prefix always matches */
1742 prefix[prefix_len - 1] == '/' || /* last char in prefix was a /, so it must be in path too */
1743 path[prefix_len] == 0 ||
1744 path[prefix_len] == '/'))
1745 return TRUE;
1746
1747 return FALSE;
1748 }
1749
1750 static char *
try_make_relative(const char * path,const char * base)1751 try_make_relative (const char *path,
1752 const char *base)
1753 {
1754 char *path2, *base2;
1755 char *relative;
1756
1757 path2 = expand_all_symlinks (path);
1758 base2 = expand_all_symlinks (base);
1759
1760 relative = NULL;
1761 if (path2 != NULL && base2 != NULL && path_has_prefix (path2, base2))
1762 {
1763 relative = path2 + strlen (base2);
1764 while (*relative == '/')
1765 relative ++;
1766 relative = g_strdup (relative);
1767 }
1768 g_free (path2);
1769 g_free (base2);
1770
1771 if (relative)
1772 return relative;
1773
1774 /* Failed, use abs path */
1775 return g_strdup (path);
1776 }
1777
1778 static gboolean
ignore_trash_mount(GUnixMountEntry * mount)1779 ignore_trash_mount (GUnixMountEntry *mount)
1780 {
1781 GUnixMountPoint *mount_point = NULL;
1782 const gchar *mount_options;
1783 gboolean retval = TRUE;
1784
1785 if (g_unix_mount_is_system_internal (mount))
1786 return TRUE;
1787
1788 mount_options = g_unix_mount_get_options (mount);
1789 if (mount_options == NULL)
1790 {
1791 mount_point = g_unix_mount_point_at (g_unix_mount_get_mount_path (mount),
1792 NULL);
1793 if (mount_point != NULL)
1794 mount_options = g_unix_mount_point_get_options (mount_point);
1795 }
1796
1797 if (mount_options == NULL ||
1798 strstr (mount_options, "x-gvfs-notrash") == NULL)
1799 retval = FALSE;
1800
1801 g_clear_pointer (&mount_point, g_unix_mount_point_free);
1802
1803 return retval;
1804 }
1805
1806 static gboolean
ignore_trash_path(const gchar * topdir)1807 ignore_trash_path (const gchar *topdir)
1808 {
1809 GUnixMountEntry *mount;
1810 gboolean retval = TRUE;
1811
1812 mount = g_unix_mount_at (topdir, NULL);
1813 if (mount == NULL)
1814 goto out;
1815
1816 retval = ignore_trash_mount (mount);
1817
1818 out:
1819 g_clear_pointer (&mount, g_unix_mount_free);
1820
1821 return retval;
1822 }
1823
1824 gboolean
_g_local_file_has_trash_dir(const char * dirname,dev_t dir_dev)1825 _g_local_file_has_trash_dir (const char *dirname, dev_t dir_dev)
1826 {
1827 static gsize home_dev_set = 0;
1828 static dev_t home_dev;
1829 static gboolean home_dev_valid = FALSE;
1830 char *topdir, *globaldir, *trashdir, *tmpname;
1831 uid_t uid;
1832 char uid_str[32];
1833 GStatBuf global_stat, trash_stat;
1834 gboolean res;
1835
1836 if (g_once_init_enter (&home_dev_set))
1837 {
1838 GStatBuf home_stat;
1839
1840 if (g_stat (g_get_home_dir (), &home_stat) == 0)
1841 {
1842 home_dev = home_stat.st_dev;
1843 home_dev_valid = TRUE;
1844 }
1845 else
1846 {
1847 home_dev_valid = FALSE;
1848 }
1849
1850 g_once_init_leave (&home_dev_set, 1);
1851 }
1852
1853 /* Assume we can trash to the home */
1854 if (!home_dev_valid)
1855 return FALSE;
1856 else if (dir_dev == home_dev)
1857 return TRUE;
1858
1859 topdir = find_mountpoint_for (dirname, dir_dev, TRUE);
1860 if (topdir == NULL)
1861 return FALSE;
1862
1863 if (ignore_trash_path (topdir))
1864 {
1865 g_free (topdir);
1866
1867 return FALSE;
1868 }
1869
1870 globaldir = g_build_filename (topdir, ".Trash", NULL);
1871 if (g_lstat (globaldir, &global_stat) == 0 &&
1872 S_ISDIR (global_stat.st_mode) &&
1873 (global_stat.st_mode & S_ISVTX) != 0)
1874 {
1875 /* got a toplevel sysadmin created dir, assume we
1876 * can trash to it (we should be able to create a dir)
1877 * This fails for the FAT case where the ownership of
1878 * that dir would be wrong though..
1879 */
1880 g_free (globaldir);
1881 g_free (topdir);
1882 return TRUE;
1883 }
1884 g_free (globaldir);
1885
1886 /* No global trash dir, or it failed the tests, fall back to $topdir/.Trash-$uid */
1887 uid = geteuid ();
1888 g_snprintf (uid_str, sizeof (uid_str), "%lu", (unsigned long) uid);
1889
1890 tmpname = g_strdup_printf (".Trash-%s", uid_str);
1891 trashdir = g_build_filename (topdir, tmpname, NULL);
1892 g_free (tmpname);
1893
1894 if (g_lstat (trashdir, &trash_stat) == 0)
1895 {
1896 g_free (topdir);
1897 g_free (trashdir);
1898 return S_ISDIR (trash_stat.st_mode) &&
1899 trash_stat.st_uid == uid;
1900 }
1901 g_free (trashdir);
1902
1903 /* User specific trash didn't exist, can we create it? */
1904 res = g_access (topdir, W_OK) == 0;
1905 g_free (topdir);
1906
1907 return res;
1908 }
1909
1910 #ifdef G_OS_UNIX
1911 gboolean
_g_local_file_is_lost_found_dir(const char * path,dev_t path_dev)1912 _g_local_file_is_lost_found_dir (const char *path, dev_t path_dev)
1913 {
1914 gboolean ret = FALSE;
1915 gchar *mount_dir = NULL;
1916 size_t mount_dir_len;
1917 GStatBuf statbuf;
1918
1919 if (!g_str_has_suffix (path, "/lost+found"))
1920 goto out;
1921
1922 mount_dir = find_mountpoint_for (path, path_dev, FALSE);
1923 if (mount_dir == NULL)
1924 goto out;
1925
1926 mount_dir_len = strlen (mount_dir);
1927 /* We special-case rootfs ('/') since it's the only case where
1928 * mount_dir ends in '/'
1929 */
1930 if (mount_dir_len == 1)
1931 mount_dir_len--;
1932 if (mount_dir_len + strlen ("/lost+found") != strlen (path))
1933 goto out;
1934
1935 if (g_lstat (path, &statbuf) != 0)
1936 goto out;
1937
1938 if (!(S_ISDIR (statbuf.st_mode) &&
1939 statbuf.st_uid == 0 &&
1940 statbuf.st_gid == 0))
1941 goto out;
1942
1943 ret = TRUE;
1944
1945 out:
1946 g_free (mount_dir);
1947 return ret;
1948 }
1949 #endif
1950
1951 static gboolean
g_local_file_trash(GFile * file,GCancellable * cancellable,GError ** error)1952 g_local_file_trash (GFile *file,
1953 GCancellable *cancellable,
1954 GError **error)
1955 {
1956 GLocalFile *local = G_LOCAL_FILE (file);
1957 GStatBuf file_stat, home_stat;
1958 const char *homedir;
1959 char *trashdir, *topdir, *infodir, *filesdir;
1960 char *basename, *trashname, *trashfile, *infoname, *infofile;
1961 char *original_name, *original_name_escaped;
1962 int i;
1963 char *data;
1964 char *path;
1965 gboolean is_homedir_trash;
1966 char *delete_time = NULL;
1967 int fd;
1968 GStatBuf trash_stat, global_stat;
1969 char *dirname, *globaldir;
1970 GVfsClass *class;
1971 GVfs *vfs;
1972 int errsv;
1973
1974 if (glib_should_use_portal ())
1975 return g_trash_portal_trash_file (file, error);
1976
1977 if (g_lstat (local->filename, &file_stat) != 0)
1978 {
1979 errsv = errno;
1980
1981 g_set_io_error (error,
1982 _("Error trashing file %s: %s"),
1983 file, errsv);
1984 return FALSE;
1985 }
1986
1987 homedir = g_get_home_dir ();
1988 if (g_stat (homedir, &home_stat) != 0)
1989 {
1990 errsv = errno;
1991
1992 g_set_io_error (error,
1993 _("Error trashing file %s: %s"),
1994 file, errsv);
1995 return FALSE;
1996 }
1997
1998 is_homedir_trash = FALSE;
1999 trashdir = NULL;
2000
2001 /* On overlayfs, a file's st_dev will be different to the home directory's.
2002 * We still want to create our trash directory under the home directory, so
2003 * instead we should stat the directory that the file we're deleting is in as
2004 * this will have the same st_dev.
2005 */
2006 if (!S_ISDIR (file_stat.st_mode))
2007 {
2008 path = g_path_get_dirname (local->filename);
2009 /* If the parent is a symlink to a different device then it might have
2010 * st_dev equal to the home directory's, in which case we will end up
2011 * trying to rename across a filesystem boundary, which doesn't work. So
2012 * we use g_stat here instead of g_lstat, to know where the symlink
2013 * points to. */
2014 if (g_stat (path, &file_stat))
2015 {
2016 errsv = errno;
2017 g_free (path);
2018
2019 g_set_io_error (error,
2020 _("Error trashing file %s: %s"),
2021 file, errsv);
2022 return FALSE;
2023 }
2024 g_free (path);
2025 }
2026
2027 if (file_stat.st_dev == home_stat.st_dev)
2028 {
2029 is_homedir_trash = TRUE;
2030 errno = 0;
2031 trashdir = g_build_filename (g_get_user_data_dir (), "Trash", NULL);
2032 if (g_mkdir_with_parents (trashdir, 0700) < 0)
2033 {
2034 char *display_name;
2035 errsv = errno;
2036
2037 display_name = g_filename_display_name (trashdir);
2038 g_set_error (error, G_IO_ERROR,
2039 g_io_error_from_errno (errsv),
2040 _("Unable to create trash directory %s: %s"),
2041 display_name, g_strerror (errsv));
2042 g_free (display_name);
2043 g_free (trashdir);
2044 return FALSE;
2045 }
2046 topdir = g_strdup (g_get_user_data_dir ());
2047 }
2048 else
2049 {
2050 uid_t uid;
2051 char uid_str[32];
2052 gboolean success = FALSE;
2053
2054 uid = geteuid ();
2055 g_snprintf (uid_str, sizeof (uid_str), "%lu", (unsigned long)uid);
2056
2057 topdir = _g_local_file_find_topdir_for (local->filename);
2058 if (topdir == NULL)
2059 {
2060 g_set_io_error (error,
2061 _("Unable to find toplevel directory to trash %s"),
2062 file, ENOTSUP);
2063 return FALSE;
2064 }
2065
2066 if (ignore_trash_path (topdir))
2067 {
2068 g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
2069 _("Trashing on system internal mounts is not supported"));
2070 g_free (topdir);
2071
2072 return FALSE;
2073 }
2074
2075 /* Try looking for global trash dir $topdir/.Trash/$uid */
2076 globaldir = g_build_filename (topdir, ".Trash", NULL);
2077 if (g_lstat (globaldir, &global_stat) == 0 &&
2078 S_ISDIR (global_stat.st_mode) &&
2079 (global_stat.st_mode & S_ISVTX) != 0)
2080 {
2081 trashdir = g_build_filename (globaldir, uid_str, NULL);
2082 success = TRUE;
2083
2084 if (g_lstat (trashdir, &trash_stat) == 0)
2085 {
2086 if (!S_ISDIR (trash_stat.st_mode) ||
2087 trash_stat.st_uid != uid)
2088 {
2089 /* Not a directory or not owned by user, ignore */
2090 g_free (trashdir);
2091 trashdir = NULL;
2092 success = FALSE;
2093 }
2094 }
2095 else if (g_mkdir (trashdir, 0700) == -1)
2096 {
2097 g_free (trashdir);
2098 trashdir = NULL;
2099 success = FALSE;
2100 }
2101 }
2102 g_free (globaldir);
2103
2104 if (trashdir == NULL)
2105 {
2106 gboolean tried_create;
2107
2108 /* No global trash dir, or it failed the tests, fall back to $topdir/.Trash-$uid */
2109 dirname = g_strdup_printf (".Trash-%s", uid_str);
2110 trashdir = g_build_filename (topdir, dirname, NULL);
2111 success = TRUE;
2112 g_free (dirname);
2113
2114 tried_create = FALSE;
2115
2116 retry:
2117 if (g_lstat (trashdir, &trash_stat) == 0)
2118 {
2119 if (!S_ISDIR (trash_stat.st_mode) ||
2120 trash_stat.st_uid != uid)
2121 {
2122 /* Remove the failed directory */
2123 if (tried_create)
2124 g_remove (trashdir);
2125
2126 /* Not a directory or not owned by user, ignore */
2127 success = FALSE;
2128 }
2129 }
2130 else
2131 {
2132 if (!tried_create &&
2133 g_mkdir (trashdir, 0700) != -1)
2134 {
2135 /* Ensure that the created dir has the right uid etc.
2136 This might fail on e.g. a FAT dir */
2137 tried_create = TRUE;
2138 goto retry;
2139 }
2140 else
2141 {
2142 success = FALSE;
2143 }
2144 }
2145 }
2146
2147 if (!success)
2148 {
2149 gchar *trashdir_display_name = NULL, *file_display_name = NULL;
2150
2151 trashdir_display_name = g_filename_display_name (trashdir);
2152 file_display_name = g_filename_display_name (local->filename);
2153 g_set_error (error, G_IO_ERROR,
2154 G_IO_ERROR_NOT_SUPPORTED,
2155 _("Unable to find or create trash directory %s to trash %s"),
2156 trashdir_display_name, file_display_name);
2157
2158 g_free (trashdir_display_name);
2159 g_free (file_display_name);
2160
2161 g_free (topdir);
2162 g_free (trashdir);
2163
2164 return FALSE;
2165 }
2166 }
2167
2168 /* Trashdir points to the trash dir with the "info" and "files" subdirectories */
2169
2170 infodir = g_build_filename (trashdir, "info", NULL);
2171 filesdir = g_build_filename (trashdir, "files", NULL);
2172
2173 /* Make sure we have the subdirectories */
2174 if ((g_mkdir (infodir, 0700) == -1 && errno != EEXIST) ||
2175 (g_mkdir (filesdir, 0700) == -1 && errno != EEXIST))
2176 {
2177 gchar *trashdir_display_name = NULL, *file_display_name = NULL;
2178
2179 trashdir_display_name = g_filename_display_name (trashdir);
2180 file_display_name = g_filename_display_name (local->filename);
2181 g_set_error (error, G_IO_ERROR,
2182 G_IO_ERROR_NOT_SUPPORTED,
2183 _("Unable to find or create trash directory %s to trash %s"),
2184 trashdir_display_name, file_display_name);
2185
2186 g_free (trashdir_display_name);
2187 g_free (file_display_name);
2188
2189 g_free (topdir);
2190 g_free (trashdir);
2191 g_free (infodir);
2192 g_free (filesdir);
2193
2194 return FALSE;
2195 }
2196
2197 g_free (trashdir);
2198
2199 basename = g_path_get_basename (local->filename);
2200 i = 1;
2201 trashname = NULL;
2202 infofile = NULL;
2203 do {
2204 g_free (trashname);
2205 g_free (infofile);
2206
2207 trashname = get_unique_filename (basename, i++);
2208 infoname = g_strconcat (trashname, ".trashinfo", NULL);
2209 infofile = g_build_filename (infodir, infoname, NULL);
2210 g_free (infoname);
2211
2212 fd = g_open (infofile, O_CREAT | O_EXCL, 0666);
2213 errsv = errno;
2214 } while (fd == -1 && errsv == EEXIST);
2215
2216 g_free (basename);
2217 g_free (infodir);
2218
2219 if (fd == -1)
2220 {
2221 errsv = errno;
2222
2223 g_free (filesdir);
2224 g_free (topdir);
2225 g_free (trashname);
2226 g_free (infofile);
2227
2228 g_set_io_error (error,
2229 _("Unable to create trashing info file for %s: %s"),
2230 file, errsv);
2231 return FALSE;
2232 }
2233
2234 (void) g_close (fd, NULL);
2235
2236 /* Write the full content of the info file before trashing to make
2237 * sure someone doesn't read an empty file. See #749314
2238 */
2239
2240 /* Use absolute names for homedir */
2241 if (is_homedir_trash)
2242 original_name = g_strdup (local->filename);
2243 else
2244 original_name = try_make_relative (local->filename, topdir);
2245 original_name_escaped = g_uri_escape_string (original_name, "/", FALSE);
2246
2247 g_free (original_name);
2248 g_free (topdir);
2249
2250 {
2251 GDateTime *now = g_date_time_new_now_local ();
2252 if (now != NULL)
2253 delete_time = g_date_time_format (now, "%Y-%m-%dT%H:%M:%S");
2254 else
2255 delete_time = g_strdup ("9999-12-31T23:59:59");
2256 g_date_time_unref (now);
2257 }
2258
2259 data = g_strdup_printf ("[Trash Info]\nPath=%s\nDeletionDate=%s\n",
2260 original_name_escaped, delete_time);
2261 g_free (delete_time);
2262
2263 g_file_set_contents_full (infofile, data, -1,
2264 G_FILE_SET_CONTENTS_CONSISTENT | G_FILE_SET_CONTENTS_ONLY_EXISTING,
2265 0600, NULL);
2266
2267 /* TODO: Maybe we should verify that you can delete the file from the trash
2268 * before moving it? OTOH, that is hard, as it needs a recursive scan
2269 */
2270
2271 trashfile = g_build_filename (filesdir, trashname, NULL);
2272
2273 g_free (filesdir);
2274
2275 if (g_rename (local->filename, trashfile) == -1)
2276 {
2277 errsv = errno;
2278
2279 g_unlink (infofile);
2280
2281 g_free (trashname);
2282 g_free (infofile);
2283 g_free (trashfile);
2284
2285 if (errsv == EXDEV)
2286 /* The trash dir was actually on another fs anyway!?
2287 * This can happen when the same device is mounted multiple
2288 * times, or with bind mounts of the same fs.
2289 */
2290 g_set_io_error (error,
2291 _("Unable to trash file %s across filesystem boundaries"),
2292 file, ENOTSUP);
2293 else
2294 g_set_io_error (error,
2295 _("Unable to trash file %s: %s"),
2296 file, errsv);
2297 return FALSE;
2298 }
2299
2300 vfs = g_vfs_get_default ();
2301 class = G_VFS_GET_CLASS (vfs);
2302 if (class->local_file_moved)
2303 class->local_file_moved (vfs, local->filename, trashfile);
2304
2305 g_free (trashfile);
2306
2307 /* TODO: Do we need to update mtime/atime here after the move? */
2308
2309 g_free (infofile);
2310 g_free (data);
2311
2312 g_free (original_name_escaped);
2313 g_free (trashname);
2314
2315 return TRUE;
2316 }
2317 #else /* G_OS_WIN32 */
2318 gboolean
_g_local_file_has_trash_dir(const char * dirname,dev_t dir_dev)2319 _g_local_file_has_trash_dir (const char *dirname, dev_t dir_dev)
2320 {
2321 return FALSE; /* XXX ??? */
2322 }
2323
2324 static gboolean
g_local_file_trash(GFile * file,GCancellable * cancellable,GError ** error)2325 g_local_file_trash (GFile *file,
2326 GCancellable *cancellable,
2327 GError **error)
2328 {
2329 GLocalFile *local = G_LOCAL_FILE (file);
2330 SHFILEOPSTRUCTW op = {0};
2331 gboolean success;
2332 wchar_t *wfilename;
2333 long len;
2334
2335 wfilename = g_utf8_to_utf16 (local->filename, -1, NULL, &len, NULL);
2336 /* SHFILEOPSTRUCT.pFrom is double-zero-terminated */
2337 wfilename = g_renew (wchar_t, wfilename, len + 2);
2338 wfilename[len + 1] = 0;
2339
2340 op.wFunc = FO_DELETE;
2341 op.pFrom = wfilename;
2342 op.fFlags = FOF_ALLOWUNDO;
2343
2344 success = SHFileOperationW (&op) == 0;
2345
2346 if (success && op.fAnyOperationsAborted)
2347 {
2348 if (cancellable && !g_cancellable_is_cancelled (cancellable))
2349 g_cancellable_cancel (cancellable);
2350 g_set_io_error (error,
2351 _("Unable to trash file %s: %s"),
2352 file, ECANCELED);
2353 success = FALSE;
2354 }
2355 else if (!success)
2356 g_set_io_error (error,
2357 _("Unable to trash file %s"),
2358 file, 0);
2359
2360 g_free (wfilename);
2361 return success;
2362 }
2363 #endif /* G_OS_WIN32 */
2364
2365 static gboolean
g_local_file_make_directory(GFile * file,GCancellable * cancellable,GError ** error)2366 g_local_file_make_directory (GFile *file,
2367 GCancellable *cancellable,
2368 GError **error)
2369 {
2370 GLocalFile *local = G_LOCAL_FILE (file);
2371
2372 if (g_mkdir (local->filename, 0777) == -1)
2373 {
2374 int errsv = errno;
2375
2376 if (errsv == EINVAL)
2377 /* This must be an invalid filename, on e.g. FAT */
2378 g_set_error_literal (error, G_IO_ERROR,
2379 G_IO_ERROR_INVALID_FILENAME,
2380 _("Invalid filename"));
2381 else
2382 g_set_io_error (error,
2383 _("Error creating directory %s: %s"),
2384 file, errsv);
2385 return FALSE;
2386 }
2387
2388 return TRUE;
2389 }
2390
2391 #ifdef HAVE_SYMLINK
2392 static gboolean
g_local_file_make_symbolic_link(GFile * file,const char * symlink_value,GCancellable * cancellable,GError ** error)2393 g_local_file_make_symbolic_link (GFile *file,
2394 const char *symlink_value,
2395 GCancellable *cancellable,
2396 GError **error)
2397 {
2398 GLocalFile *local = G_LOCAL_FILE (file);
2399
2400 if (symlink (symlink_value, local->filename) == -1)
2401 {
2402 int errsv = errno;
2403
2404 if (errsv == EINVAL)
2405 /* This must be an invalid filename, on e.g. FAT */
2406 g_set_error_literal (error, G_IO_ERROR,
2407 G_IO_ERROR_INVALID_FILENAME,
2408 _("Invalid filename"));
2409 else if (errsv == EPERM)
2410 g_set_error (error, G_IO_ERROR,
2411 G_IO_ERROR_NOT_SUPPORTED,
2412 _("Filesystem does not support symbolic links"));
2413 else
2414 g_set_io_error (error,
2415 _("Error making symbolic link %s: %s"),
2416 file, errsv);
2417 return FALSE;
2418 }
2419 return TRUE;
2420 }
2421 #endif
2422
2423 static gboolean
g_local_file_move(GFile * source,GFile * destination,GFileCopyFlags flags,GCancellable * cancellable,GFileProgressCallback progress_callback,gpointer progress_callback_data,GError ** error)2424 g_local_file_move (GFile *source,
2425 GFile *destination,
2426 GFileCopyFlags flags,
2427 GCancellable *cancellable,
2428 GFileProgressCallback progress_callback,
2429 gpointer progress_callback_data,
2430 GError **error)
2431 {
2432 GLocalFile *local_source, *local_destination;
2433 GStatBuf statbuf;
2434 gboolean destination_exist, source_is_dir;
2435 char *backup_name;
2436 int res;
2437 off_t source_size;
2438 GVfsClass *class;
2439 GVfs *vfs;
2440
2441 if (!G_IS_LOCAL_FILE (source) ||
2442 !G_IS_LOCAL_FILE (destination))
2443 {
2444 /* Fall back to default move */
2445 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Move not supported");
2446 return FALSE;
2447 }
2448
2449 local_source = G_LOCAL_FILE (source);
2450 local_destination = G_LOCAL_FILE (destination);
2451
2452 res = g_lstat (local_source->filename, &statbuf);
2453 if (res == -1)
2454 {
2455 int errsv = errno;
2456
2457 g_set_io_error (error,
2458 _("Error moving file %s: %s"),
2459 source, errsv);
2460 return FALSE;
2461 }
2462
2463 source_is_dir = S_ISDIR (statbuf.st_mode);
2464 source_size = statbuf.st_size;
2465
2466 destination_exist = FALSE;
2467 res = g_lstat (local_destination->filename, &statbuf);
2468 if (res == 0)
2469 {
2470 destination_exist = TRUE; /* Target file exists */
2471
2472 if (flags & G_FILE_COPY_OVERWRITE)
2473 {
2474 /* Always fail on dirs, even with overwrite */
2475 if (S_ISDIR (statbuf.st_mode))
2476 {
2477 if (source_is_dir)
2478 g_set_error_literal (error,
2479 G_IO_ERROR,
2480 G_IO_ERROR_WOULD_MERGE,
2481 _("Can’t move directory over directory"));
2482 else
2483 g_set_error_literal (error,
2484 G_IO_ERROR,
2485 G_IO_ERROR_IS_DIRECTORY,
2486 _("Can’t copy over directory"));
2487 return FALSE;
2488 }
2489 }
2490 else
2491 {
2492 g_set_io_error (error,
2493 _("Error moving file %s: %s"),
2494 source, EEXIST);
2495 return FALSE;
2496 }
2497 }
2498
2499 if (flags & G_FILE_COPY_BACKUP && destination_exist)
2500 {
2501 backup_name = g_strconcat (local_destination->filename, "~", NULL);
2502 if (g_rename (local_destination->filename, backup_name) == -1)
2503 {
2504 g_set_error_literal (error,
2505 G_IO_ERROR,
2506 G_IO_ERROR_CANT_CREATE_BACKUP,
2507 _("Backup file creation failed"));
2508 g_free (backup_name);
2509 return FALSE;
2510 }
2511 g_free (backup_name);
2512 destination_exist = FALSE; /* It did, but no more */
2513 }
2514
2515 if (source_is_dir && destination_exist && (flags & G_FILE_COPY_OVERWRITE))
2516 {
2517 /* Source is a dir, destination exists (and is not a dir, because that would have failed
2518 earlier), and we're overwriting. Manually remove the target so we can do the rename. */
2519 res = g_unlink (local_destination->filename);
2520 if (res == -1)
2521 {
2522 int errsv = errno;
2523
2524 g_set_error (error, G_IO_ERROR,
2525 g_io_error_from_errno (errsv),
2526 _("Error removing target file: %s"),
2527 g_strerror (errsv));
2528 return FALSE;
2529 }
2530 }
2531
2532 if (g_rename (local_source->filename, local_destination->filename) == -1)
2533 {
2534 int errsv = errno;
2535
2536 if (errsv == EXDEV)
2537 /* This will cause the fallback code to run */
2538 g_set_error_literal (error, G_IO_ERROR,
2539 G_IO_ERROR_NOT_SUPPORTED,
2540 _("Move between mounts not supported"));
2541 else if (errsv == EINVAL)
2542 /* This must be an invalid filename, on e.g. FAT, or
2543 we're trying to move the file into itself...
2544 We return invalid filename for both... */
2545 g_set_error_literal (error, G_IO_ERROR,
2546 G_IO_ERROR_INVALID_FILENAME,
2547 _("Invalid filename"));
2548 else
2549 g_set_io_error (error,
2550 _("Error moving file %s: %s"),
2551 source, errsv);
2552 return FALSE;
2553 }
2554
2555 vfs = g_vfs_get_default ();
2556 class = G_VFS_GET_CLASS (vfs);
2557 if (class->local_file_moved)
2558 class->local_file_moved (vfs, local_source->filename, local_destination->filename);
2559
2560 /* Make sure we send full copied size */
2561 if (progress_callback)
2562 progress_callback (source_size, source_size, progress_callback_data);
2563
2564 return TRUE;
2565 }
2566
2567 #ifdef G_OS_WIN32
2568
2569 gboolean
g_local_file_is_nfs_home(const gchar * filename)2570 g_local_file_is_nfs_home (const gchar *filename)
2571 {
2572 return FALSE;
2573 }
2574
2575 #else
2576
2577 static gboolean
is_remote_fs_type(const gchar * fsname)2578 is_remote_fs_type (const gchar *fsname)
2579 {
2580 if (fsname != NULL)
2581 {
2582 if (strcmp (fsname, "nfs") == 0)
2583 return TRUE;
2584 if (strcmp (fsname, "nfs4") == 0)
2585 return TRUE;
2586 if (strcmp (fsname, "cifs") == 0)
2587 return TRUE;
2588 if (strcmp (fsname, "smb") == 0)
2589 return TRUE;
2590 if (strcmp (fsname, "smb2") == 0)
2591 return TRUE;
2592 }
2593
2594 return FALSE;
2595 }
2596
2597 gboolean
g_local_file_is_nfs_home(const gchar * filename)2598 g_local_file_is_nfs_home (const gchar *filename)
2599 {
2600 static gboolean remote_home = FALSE;
2601 static gsize initialized;
2602 const gchar *home;
2603
2604 home = g_get_home_dir ();
2605 if (path_has_prefix (filename, home))
2606 {
2607 if (g_once_init_enter (&initialized))
2608 {
2609 GFile *file;
2610 GFileInfo *info;
2611 const gchar *fs_type = NULL;
2612
2613 file = _g_local_file_new (home);
2614 info = g_local_file_query_filesystem_info (file, G_FILE_ATTRIBUTE_FILESYSTEM_TYPE, NULL, NULL);
2615 if (info != NULL)
2616 fs_type = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_FILESYSTEM_TYPE);
2617 if (g_strcmp0 (fs_type, "nfs") == 0 || g_strcmp0 (fs_type, "nfs4") == 0)
2618 remote_home = TRUE;
2619 g_clear_object (&info);
2620 g_object_unref (file);
2621
2622 g_once_init_leave (&initialized, TRUE);
2623 }
2624 return remote_home;
2625 }
2626
2627 return FALSE;
2628 }
2629 #endif /* !G_OS_WIN32 */
2630
2631 static GFileMonitor*
g_local_file_monitor_dir(GFile * file,GFileMonitorFlags flags,GCancellable * cancellable,GError ** error)2632 g_local_file_monitor_dir (GFile *file,
2633 GFileMonitorFlags flags,
2634 GCancellable *cancellable,
2635 GError **error)
2636 {
2637 GLocalFile *local_file = G_LOCAL_FILE (file);
2638
2639 return g_local_file_monitor_new_for_path (local_file->filename, TRUE, flags, error);
2640 }
2641
2642 static GFileMonitor*
g_local_file_monitor_file(GFile * file,GFileMonitorFlags flags,GCancellable * cancellable,GError ** error)2643 g_local_file_monitor_file (GFile *file,
2644 GFileMonitorFlags flags,
2645 GCancellable *cancellable,
2646 GError **error)
2647 {
2648 GLocalFile *local_file = G_LOCAL_FILE (file);
2649
2650 return g_local_file_monitor_new_for_path (local_file->filename, FALSE, flags, error);
2651 }
2652
2653 /* Here is the GLocalFile implementation of g_file_measure_disk_usage().
2654 *
2655 * If available, we use fopenat() in preference to filenames for
2656 * efficiency and safety reasons. We know that fopenat() is available
2657 * based on if AT_FDCWD is defined. POSIX guarantees that this will be
2658 * defined as a macro.
2659 *
2660 * We use a linked list of stack-allocated GSList nodes in order to be
2661 * able to reconstruct the filename for error messages. We actually
2662 * pass the filename to operate on through the top node of the list.
2663 *
2664 * In case we're using openat(), this top filename will be a basename
2665 * which should be opened in the directory which has also had its fd
2666 * passed along. If we're not using openat() then it will be a full
2667 * absolute filename.
2668 */
2669
2670 static gboolean
g_local_file_measure_size_error(GFileMeasureFlags flags,gint saved_errno,GSList * name,GError ** error)2671 g_local_file_measure_size_error (GFileMeasureFlags flags,
2672 gint saved_errno,
2673 GSList *name,
2674 GError **error)
2675 {
2676 /* Only report an error if we were at the toplevel or if the caller
2677 * requested reporting of all errors.
2678 */
2679 if ((name->next == NULL) || (flags & G_FILE_MEASURE_REPORT_ANY_ERROR))
2680 {
2681 GString *filename;
2682 GSList *node;
2683
2684 /* Skip some work if there is no error return */
2685 if (!error)
2686 return FALSE;
2687
2688 #ifdef AT_FDCWD
2689 /* If using openat() we need to rebuild the filename for the message */
2690 filename = g_string_new (name->data);
2691 for (node = name->next; node; node = node->next)
2692 {
2693 gchar *utf8;
2694
2695 g_string_prepend_c (filename, G_DIR_SEPARATOR);
2696 utf8 = g_filename_display_name (node->data);
2697 g_string_prepend (filename, utf8);
2698 g_free (utf8);
2699 }
2700 #else
2701 {
2702 gchar *utf8;
2703
2704 /* Otherwise, we already have it, so just use it. */
2705 node = name;
2706 filename = g_string_new (NULL);
2707 utf8 = g_filename_display_name (node->data);
2708 g_string_append (filename, utf8);
2709 g_free (utf8);
2710 }
2711 #endif
2712
2713 g_set_error (error, G_IO_ERROR, g_io_error_from_errno (saved_errno),
2714 _("Could not determine the disk usage of %s: %s"),
2715 filename->str, g_strerror (saved_errno));
2716
2717 g_string_free (filename, TRUE);
2718
2719 return FALSE;
2720 }
2721
2722 else
2723 /* We're not reporting this error... */
2724 return TRUE;
2725 }
2726
2727 typedef struct
2728 {
2729 GFileMeasureFlags flags;
2730 dev_t contained_on;
2731 GCancellable *cancellable;
2732
2733 GFileMeasureProgressCallback progress_callback;
2734 gpointer progress_data;
2735
2736 guint64 disk_usage;
2737 guint64 num_dirs;
2738 guint64 num_files;
2739
2740 guint64 last_progress_report;
2741 } MeasureState;
2742
2743 static gboolean
2744 g_local_file_measure_size_of_contents (gint fd,
2745 GSList *dir_name,
2746 MeasureState *state,
2747 GError **error);
2748
2749 static gboolean
g_local_file_measure_size_of_file(gint parent_fd,GSList * name,MeasureState * state,GError ** error)2750 g_local_file_measure_size_of_file (gint parent_fd,
2751 GSList *name,
2752 MeasureState *state,
2753 GError **error)
2754 {
2755 GLocalFileStat buf;
2756
2757 if (g_cancellable_set_error_if_cancelled (state->cancellable, error))
2758 return FALSE;
2759
2760 #if defined (AT_FDCWD)
2761 if (g_local_file_fstatat (parent_fd, name->data, AT_SYMLINK_NOFOLLOW,
2762 G_LOCAL_FILE_STAT_FIELD_BASIC_STATS,
2763 G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_ATIME),
2764 &buf) != 0)
2765 {
2766 int errsv = errno;
2767 return g_local_file_measure_size_error (state->flags, errsv, name, error);
2768 }
2769 #elif defined (HAVE_LSTAT) || !defined (G_OS_WIN32)
2770 if (g_lstat (name->data, &buf) != 0)
2771 {
2772 int errsv = errno;
2773 return g_local_file_measure_size_error (state->flags, errsv, name, error);
2774 }
2775 #else /* !AT_FDCWD && !HAVE_LSTAT && G_OS_WIN32 */
2776 if (GLIB_PRIVATE_CALL (g_win32_lstat_utf8) (name->data, &buf) != 0)
2777 {
2778 int errsv = errno;
2779 return g_local_file_measure_size_error (state->flags, errsv, name, error);
2780 }
2781 #endif
2782
2783 if (name->next)
2784 {
2785 /* If not at the toplevel, check for a device boundary. */
2786
2787 if (state->flags & G_FILE_MEASURE_NO_XDEV)
2788 if (state->contained_on != _g_stat_dev (&buf))
2789 return TRUE;
2790 }
2791 else
2792 {
2793 /* If, however, this is the toplevel, set the device number so
2794 * that recursive invocations can compare against it.
2795 */
2796 state->contained_on = _g_stat_dev (&buf);
2797 }
2798
2799 #if defined (G_OS_WIN32)
2800 if (~state->flags & G_FILE_MEASURE_APPARENT_SIZE)
2801 state->disk_usage += buf.allocated_size;
2802 else
2803 #elif defined (HAVE_STRUCT_STAT_ST_BLOCKS)
2804 if (~state->flags & G_FILE_MEASURE_APPARENT_SIZE)
2805 state->disk_usage += _g_stat_blocks (&buf) * G_GUINT64_CONSTANT (512);
2806 else
2807 #endif
2808 state->disk_usage += _g_stat_size (&buf);
2809
2810 if (S_ISDIR (_g_stat_mode (&buf)))
2811 state->num_dirs++;
2812 else
2813 state->num_files++;
2814
2815 if (state->progress_callback)
2816 {
2817 /* We could attempt to do some cleverness here in order to avoid
2818 * calling clock_gettime() so much, but we're doing stats and opens
2819 * all over the place already...
2820 */
2821 if (state->last_progress_report)
2822 {
2823 guint64 now;
2824
2825 now = g_get_monotonic_time ();
2826
2827 if (state->last_progress_report + 200 * G_TIME_SPAN_MILLISECOND < now)
2828 {
2829 (* state->progress_callback) (TRUE,
2830 state->disk_usage, state->num_dirs, state->num_files,
2831 state->progress_data);
2832 state->last_progress_report = now;
2833 }
2834 }
2835 else
2836 {
2837 /* We must do an initial report to inform that more reports
2838 * will be coming.
2839 */
2840 (* state->progress_callback) (TRUE, 0, 0, 0, state->progress_data);
2841 state->last_progress_report = g_get_monotonic_time ();
2842 }
2843 }
2844
2845 if (S_ISDIR (_g_stat_mode (&buf)))
2846 {
2847 int dir_fd = -1;
2848 #ifdef AT_FDCWD
2849 int errsv;
2850 #endif
2851
2852 if (g_cancellable_set_error_if_cancelled (state->cancellable, error))
2853 return FALSE;
2854
2855 #ifdef AT_FDCWD
2856 #ifdef HAVE_OPEN_O_DIRECTORY
2857 dir_fd = openat (parent_fd, name->data, O_RDONLY|O_DIRECTORY);
2858 #else
2859 dir_fd = openat (parent_fd, name->data, O_RDONLY);
2860 #endif
2861 errsv = errno;
2862 if (dir_fd < 0)
2863 return g_local_file_measure_size_error (state->flags, errsv, name, error);
2864 #endif
2865
2866 if (!g_local_file_measure_size_of_contents (dir_fd, name, state, error))
2867 return FALSE;
2868 }
2869
2870 return TRUE;
2871 }
2872
2873 static gboolean
g_local_file_measure_size_of_contents(gint fd,GSList * dir_name,MeasureState * state,GError ** error)2874 g_local_file_measure_size_of_contents (gint fd,
2875 GSList *dir_name,
2876 MeasureState *state,
2877 GError **error)
2878 {
2879 gboolean success = TRUE;
2880 const gchar *name;
2881 GDir *dir;
2882 gint saved_errno;
2883
2884 #ifdef AT_FDCWD
2885 {
2886 /* If this fails, we want to preserve the errno from fdopendir() */
2887 DIR *dirp;
2888 dirp = fdopendir (fd);
2889 saved_errno = errno;
2890 dir = dirp ? GLIB_PRIVATE_CALL(g_dir_new_from_dirp) (dirp) : NULL;
2891 g_assert ((dirp == NULL) == (dir == NULL));
2892 }
2893 #else
2894 dir = GLIB_PRIVATE_CALL(g_dir_open_with_errno) (dir_name->data, 0);
2895 saved_errno = errno;
2896 #endif
2897
2898 if (dir == NULL)
2899 {
2900 #ifdef AT_FDCWD
2901 close (fd);
2902 #endif
2903
2904 return g_local_file_measure_size_error (state->flags, saved_errno, dir_name, error);
2905 }
2906
2907 while (success && (name = g_dir_read_name (dir)))
2908 {
2909 GSList node;
2910
2911 node.next = dir_name;
2912 #ifdef AT_FDCWD
2913 node.data = (gchar *) name;
2914 #else
2915 node.data = g_build_filename (dir_name->data, name, NULL);
2916 #endif
2917
2918 success = g_local_file_measure_size_of_file (fd, &node, state, error);
2919
2920 #ifndef AT_FDCWD
2921 g_free (node.data);
2922 #endif
2923 }
2924
2925 g_dir_close (dir);
2926
2927 return success;
2928 }
2929
2930 static gboolean
g_local_file_measure_disk_usage(GFile * file,GFileMeasureFlags flags,GCancellable * cancellable,GFileMeasureProgressCallback progress_callback,gpointer progress_data,guint64 * disk_usage,guint64 * num_dirs,guint64 * num_files,GError ** error)2931 g_local_file_measure_disk_usage (GFile *file,
2932 GFileMeasureFlags flags,
2933 GCancellable *cancellable,
2934 GFileMeasureProgressCallback progress_callback,
2935 gpointer progress_data,
2936 guint64 *disk_usage,
2937 guint64 *num_dirs,
2938 guint64 *num_files,
2939 GError **error)
2940 {
2941 GLocalFile *local_file = G_LOCAL_FILE (file);
2942 MeasureState state = { 0, };
2943 gint root_fd = -1;
2944 GSList node;
2945
2946 state.flags = flags;
2947 state.cancellable = cancellable;
2948 state.progress_callback = progress_callback;
2949 state.progress_data = progress_data;
2950
2951 #ifdef AT_FDCWD
2952 root_fd = AT_FDCWD;
2953 #endif
2954
2955 node.data = local_file->filename;
2956 node.next = NULL;
2957
2958 if (!g_local_file_measure_size_of_file (root_fd, &node, &state, error))
2959 return FALSE;
2960
2961 if (disk_usage)
2962 *disk_usage = state.disk_usage;
2963
2964 if (num_dirs)
2965 *num_dirs = state.num_dirs;
2966
2967 if (num_files)
2968 *num_files = state.num_files;
2969
2970 return TRUE;
2971 }
2972
2973 static void
g_local_file_file_iface_init(GFileIface * iface)2974 g_local_file_file_iface_init (GFileIface *iface)
2975 {
2976 iface->dup = g_local_file_dup;
2977 iface->hash = g_local_file_hash;
2978 iface->equal = g_local_file_equal;
2979 iface->is_native = g_local_file_is_native;
2980 iface->has_uri_scheme = g_local_file_has_uri_scheme;
2981 iface->get_uri_scheme = g_local_file_get_uri_scheme;
2982 iface->get_basename = g_local_file_get_basename;
2983 iface->get_path = g_local_file_get_path;
2984 iface->get_uri = g_local_file_get_uri;
2985 iface->get_parse_name = g_local_file_get_parse_name;
2986 iface->get_parent = g_local_file_get_parent;
2987 iface->prefix_matches = g_local_file_prefix_matches;
2988 iface->get_relative_path = g_local_file_get_relative_path;
2989 iface->resolve_relative_path = g_local_file_resolve_relative_path;
2990 iface->get_child_for_display_name = g_local_file_get_child_for_display_name;
2991 iface->set_display_name = g_local_file_set_display_name;
2992 iface->enumerate_children = g_local_file_enumerate_children;
2993 iface->query_info = g_local_file_query_info;
2994 iface->query_filesystem_info = g_local_file_query_filesystem_info;
2995 iface->find_enclosing_mount = g_local_file_find_enclosing_mount;
2996 iface->query_settable_attributes = g_local_file_query_settable_attributes;
2997 iface->query_writable_namespaces = g_local_file_query_writable_namespaces;
2998 iface->set_attribute = g_local_file_set_attribute;
2999 iface->set_attributes_from_info = g_local_file_set_attributes_from_info;
3000 iface->read_fn = g_local_file_read;
3001 iface->append_to = g_local_file_append_to;
3002 iface->create = g_local_file_create;
3003 iface->replace = g_local_file_replace;
3004 iface->open_readwrite = g_local_file_open_readwrite;
3005 iface->create_readwrite = g_local_file_create_readwrite;
3006 iface->replace_readwrite = g_local_file_replace_readwrite;
3007 iface->delete_file = g_local_file_delete;
3008 iface->trash = g_local_file_trash;
3009 iface->make_directory = g_local_file_make_directory;
3010 #ifdef HAVE_SYMLINK
3011 iface->make_symbolic_link = g_local_file_make_symbolic_link;
3012 #endif
3013 iface->move = g_local_file_move;
3014 iface->monitor_dir = g_local_file_monitor_dir;
3015 iface->monitor_file = g_local_file_monitor_file;
3016 iface->measure_disk_usage = g_local_file_measure_disk_usage;
3017
3018 iface->supports_thread_contexts = TRUE;
3019 }
3020