glib/gio/tests/trash.c
Iain Lane 1152d99ded Fix trashing on overlayfs
In order to determine whether to trash a file to the home directory, we
compare its st_dev to our home directory's st_dev field.

This is the wrong thing to do on overlayfs when deleting files, because
st_dev contains the ID of the filesystem providing the file (which can
be the lower or upper filesystem), but directories always return the ID
of the overlayfs. Thus the comparison fails and we are unable to trash
the file.

Fix this by checking st_dev of the parent directory when we are deleting
a file.

Also adjust `test_trash_not_supported` for this - make its st_dev check
look at the parent directory's `st_dev` rather than the temporary file's
own.

Fixes #1027.
2018-08-13 17:41:59 +01:00

110 lines
3.5 KiB
C

/*
* Copyright (C) 2018 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* licence, or (at your option) any later version.
*
* This 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <glib.h>
#ifndef G_OS_UNIX
#error This is a Unix-specific test
#endif
#include <glib/gstdio.h>
#include <gio/gio.h>
#include <gio/gunixmounts.h>
/* Test that g_file_trash() returns G_IO_ERROR_NOT_SUPPORTED for files on system mounts. */
static void
test_trash_not_supported (void)
{
GFile *file;
GFileIOStream *stream;
GUnixMountEntry *mount;
GFileInfo *info;
GError *error = NULL;
gboolean ret;
gchar *parent_dirname;
GStatBuf parent_stat, home_stat;
/* The test assumes that tmp file is located on system internal mount. */
file = g_file_new_tmp ("test-trashXXXXXX", &stream, &error);
parent_dirname = g_path_get_dirname (g_file_peek_path (file));
g_assert_no_error (error);
g_assert_cmpint (g_stat (parent_dirname, &parent_stat), ==, 0);
g_test_message ("File: %s (parent st_dev: %" G_GUINT64_FORMAT ")",
g_file_peek_path (file), (guint64) parent_stat.st_dev);
g_assert_cmpint (g_stat (g_get_home_dir (), &home_stat), ==, 0);
g_test_message ("Home: %s (st_dev: %" G_GUINT64_FORMAT ")",
g_get_home_dir (), (guint64) home_stat.st_dev);
if (parent_stat.st_dev == home_stat.st_dev)
{
g_test_skip ("The file has to be on another filesystem than the home trash to run this test");
g_free (parent_dirname);
g_object_unref (stream);
g_object_unref (file);
return;
}
mount = g_unix_mount_for (g_file_peek_path (file), NULL);
g_assert_true (mount == NULL || g_unix_mount_is_system_internal (mount));
g_test_message ("Mount: %s", (mount != NULL) ? g_unix_mount_get_mount_path (mount) : "(null)");
g_clear_pointer (&mount, g_unix_mount_free);
/* g_file_trash() shouldn't be supported on system internal mounts,
* because those are not monitored by gvfsd-trash.
*/
ret = g_file_trash (file, NULL, &error);
g_assert_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED);
g_test_message ("Error: %s", error->message);
g_assert_false (ret);
g_clear_error (&error);
info = g_file_query_info (file,
G_FILE_ATTRIBUTE_ACCESS_CAN_TRASH,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
NULL,
&error);
g_assert_no_error (error);
g_assert_false (g_file_info_get_attribute_boolean (info,
G_FILE_ATTRIBUTE_ACCESS_CAN_TRASH));
g_io_stream_close (G_IO_STREAM (stream), NULL, &error);
g_assert_no_error (error);
g_free (parent_dirname);
g_object_unref (info);
g_object_unref (stream);
g_object_unref (file);
}
int
main (int argc, char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_bug_base ("htps://gitlab.gnome.org/GNOME/glib/issues/");
g_test_bug ("251");
g_test_add_func ("/trash/not-supported", test_trash_not_supported);
return g_test_run ();
}