The https://wiki.gnome.org/Projects/gvfs/debugging page contains info
about getting logs, but it is hard to find it. Let's add the link into
the README file to make easier.

The security-related issues should be reported over
https://security.gnome.org/ currently. Let's replace the obsolete
security@gnome.org e-mail address.

Jonas Dreßler authored Feb 14, 2020 and Ondrej Holy committed Jan 15, 2021

The layout of the modal dialogs in gnome-shell changed [1] and the title
now is larger and uses the style of a headline. Make sure all titles
remain fully visible and use shorter strings for those.

Also unify the generic "Enter password" strings a bit to make work
easier for translators and use this string for most cases:

"Authentication Required\nEnter password for “%s”:"

[1] gnome-shell#1343

Recently added warnings when peer-to-peer connection fails (commit 60ca0cea)
makes visible old bug that the session bus fallback is tried regardless of
the fact that the operation was cancelled. Let's stop the operation
immediately when G_IO_ERROR_CANCELLED is returned and don't print the
warnings in this case.

António Fernandes authored Dec 14, 2020 and Ondrej Holy committed Dec 18, 2020

gphoto2 does this since commit 98318676

The same rationale applies to MTP.

#497

Niklas Hambüchen authored Nov 15, 2020 and Ondrej Holy committed Dec 16, 2020

The MTP spec section 5.2.2.7 allows `StorageDescription` to be
an empty string.

`libmtp` currently translates this to

    char * StorageDescription = NULL

instead of `""` in `ptp_unpack_SI()` via `ptp_unpack_string()`.
(I'm not sure if it's good that it does that, to be followed up on separately.)

`create_storage_name()` until now returned
`g_strdup(storage->StorageDescription)`, which returns `NULL` if `NULL` is
given, and thus `get_storage_info()` would eventually call

    char *storage_name = NULL = create_storage_name(storage);
    g_file_info_set_name (info, storage_name = NULL);
    g_file_info_set_display_name (info, storage_name = NULL);

resulting in assertion failures in `gvfsd`:

    g_file_info_set_name: assertion 'name != NULL' failed
    g_file_info_set_display_name: assertion 'display_name != NULL' failed

as well as crashes in file managers like Thunar:

    g_file_get_child: assertion 'name != NULL' failed

and warnings in Nautilus like:

    Got GFileInfo with NULL name in mtp://Ricoh_Company__Ltd._RICOH_THETA_V_00165759/, ignoring. This shouldn't happen unless the gvfs backend is broken.

This commit fixes it by adding a contract to `create_storage_name()`
that it will never represent empty strings as NULL.

It seems that if file monitor is not canceled before unreffing, it can
cause deadlock. Let's explicitly cancel it before unreffing to prevent
this. See glib#1941.

Fixes: #485

Copying file from file:// to admin:// is slow. This is because push
vfunc is not implemented and thus read-write fallback is used. Let's
implement push to improve performance in this case as well.

#530

Copying file within admin backend is slow in comparison to file://.
This is because copy vfunc is not implemented and thus read-write
fallback is used. Let's implement native copy to improve performance.

Fixes: #530

Asynchronous API fallbacks to session bus when peer-to-peer connection
fails, however, synchronous API fails in the same case. Let's add
fallback to session bus also for the synchronous case.

When peer-to-peer connection fails, the session bus is silently used
instead by the asynchronous API. Let's add warnings to make it more
obvious and mention that --filesystem=xdg-run/gvfsd is probably
missing.

g_vfs_icon_load_async fails if peer-to-peer connection can't be
establised. Let's add fallback to session bus as it is implemented
already on other places.

Flatpak	applications don't work with gvfs if network access is not
granted. This is because GVfs for peer-to-peer communication uses
abstract sockets, which are tied to the network namespace. Let's use
named sockets under /run/user/$UID/gvfsd/ instead, which will allow
applications to use --filesystem=xdg-run/gvfsd to grant access.

Fixes: #515