When starting xwayland with smithay, the first time I would get the
following output (do not ask what happens with displays 0, 1, 2. That's
not important right now):
Dec 29 14:13:31.031 DEBG Attempting to aquire an X11 display lock, D: 3, smithay_module: XWayland
Dec 29 14:13:31.032 DEBG X11 lock aquired, D: 3, smithay_module: XWayland
Dec 29 14:13:31.032 INFO Initialization completed, starting the main loop.
When killing the process with ctrl-c and starting it again, this
happened:
Dec 29 14:13:29.138 DEBG Attempting to aquire an X11 display lock, D: 3, smithay_module: XWayland
Dec 29 14:13:29.138 DEBG Failed to acquire lock, D: 3, smithay_module: XWayland
Dec 29 14:13:29.138 DEBG Lock was blocked by a defunct X11 server, trying again, D: 3, smithay_module: XWayland
Dec 29 14:13:29.139 DEBG Attempting to aquire an X11 display lock, D: 3, smithay_module: XWayland
Dec 29 14:13:29.139 DEBG X11 lock aquired, D: 3, smithay_module: XWayland
Dec 29 14:13:29.139 INFO Cleaning up X11 lock., smithay_module: XWayland
Dec 29 14:13:29.139 DEBG Attempting to aquire an X11 display lock, D: 4, smithay_module: XWayland
Dec 29 14:13:29.139 DEBG X11 lock aquired, D: 4, smithay_module: XWayland
Dec 29 14:13:29.139 INFO Initialization completed, starting the main loop.
The reason for the above behaviour is the
smithay::xwayland::x11_sockets::open_x11_sockets_for_display() failed.
The code successfully acquired the lock file, but then could not bind
the sockets. More specifically, the concrete socket in /tmp/.X11-unix/
already existed and thus bind() failed with EADDRINUSE.
(The code in X11Lock::grab() would then drop the already acquired
X11Lock and its Drop impl deleted the socket. Thus, when I started
things again, this time it successfully acquired display 3.)
Fix this removing the socket before trying to bind it.
This is also done by wlroots: In xwayland/sockets.x, the function
open_socket() has the same job as smithay's open_socket() function.
However, for non-abstract sockets, it would first unlink the target
before trying to bind:
if (addr->sun_path[0]) {
unlink(addr->sun_path);
}
Signed-off-by: Uli Schlachter <psychon@znc.in>
Here is a lock file not created by smithay:
$ xxd /tmp/.X0-lock
00000000: 2020 2020 2020 2035 3537 0a 557.
And this is a lock file created by smithay:
$ xxd /tmp/.X23-lock
00000000: 2020 2020 3130 3733 3332 107332
As you see, the difference is a trailing newline (0x0a).
Lock files 1 to 22 where also created by smithay, because I started it a
couple of times. Reading these lock files fails, since the code expects
a file with at least 11 bytes of content: It uses read_exact() with a
buffer of length 11 in the Err()-branch of the match that this commit
modifies.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Handling SIGUSR1 requires setting a signal handler, which is a global
resource. This can also cause problems in the presence of threads, since
every thread needs to set up a signal handler. This commit instead
changes the code to use a pipe instead (actually a UnixStream). When the
child closes the pipe, the parent wakes up and knows "to do something".
Fixes: https://github.com/Smithay/smithay/issues/246
Signed-off-by: Uli Schlachter <psychon@znc.in>
libinput provides sub-pixel precision for pointer motion & touch events.
Keep this precision by switching all coordinates values from input
events to f64 (rather than i32 or u32). Otherwise, values are rounded
and part of the movment is lost.
Potentially fixes#224
slog-stdlog has a significant dependency tree and is basically unsued if
the downstream crate of Smithay always provides a logger (like anvil),
so it is not really needed.
Uli Schlachter
Victor Berger
Eric Anholt
Victor Berger
Arnout Engelen
Jonas Platte
Mateus Carmo M de F Barbosa
Victor Brekenfeld
Hilmar Gústafsson
Kirill Chibisov