mirror of
https://github.com/brl/mutter.git
synced 2024-11-24 17:10:40 -05:00
wayland: add TTY and DRM master management
Now that we have a setuid launcher binary, we can make use of using a private protocol through the socket we're passed at startup. We also use the new hook in clutter-evdev to ask mutter-launch for the FDs of the input devices we need, and we emulate the old X DRM lock with a nested GMainContext without sources. In the future, mutter-launch will be replaced with the new logind API currently in development. https://bugzilla.gnome.org/show_bug.cgi?id=705861
This commit is contained in:
Giovanni Campagna
parent
04aff06876
commit
c9a9c5fe79
@ -232,7 +232,7 @@ AS_IF([test "x$WAYLAND_SCANNER" = "xno"],
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AC_SUBST([WAYLAND_SCANNER])
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AC_SUBST(XWAYLAND_PATH)
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MUTTER_PC_MODULES="$MUTTER_PC_MODULES wayland-server"
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MUTTER_PC_MODULES="$MUTTER_PC_MODULES wayland-server libdrm"
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PKG_CHECK_MODULES(MUTTER, $MUTTER_PC_MODULES)
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PKG_CHECK_EXISTS([xi >= 1.6.99.1],
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@ -195,7 +195,9 @@ libmutter_wayland_la_SOURCES += \
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wayland/meta-wayland-seat.c \
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wayland/meta-wayland-seat.h \
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wayland/meta-wayland-stage.h \
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wayland/meta-wayland-stage.c
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wayland/meta-wayland-stage.c \
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wayland/meta-weston-launch.c \
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wayland/meta-weston-launch.h
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libmutter_wayland_la_LDFLAGS = -no-undefined
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libmutter_wayland_la_LIBADD = $(MUTTER_LIBS)
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@ -58,6 +58,7 @@
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#include "meta-wayland-private.h"
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#include <glib-object.h>
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#include <glib-unix.h>
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#include <gdk/gdkx.h>
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#include <stdlib.h>
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@ -352,59 +353,12 @@ meta_finalize (void)
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meta_wayland_finalize ();
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}
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static int signal_pipe_fds[2] = { -1, -1 };
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static void
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signal_handler (int signum)
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{
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if (signal_pipe_fds[1] >= 0)
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{
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switch (signum)
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{
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case SIGTERM:
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write (signal_pipe_fds[1], "T", 1);
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break;
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default:
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break;
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}
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}
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}
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static gboolean
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on_signal (GIOChannel *source,
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GIOCondition condition,
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void *data)
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on_sigterm (gpointer user_data)
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{
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char signal;
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int count;
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meta_quit (EXIT_SUCCESS);
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for (;;)
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{
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count = read (signal_pipe_fds[0], &signal, 1);
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if (count == EINTR)
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continue;
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if (count < 0)
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{
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const char *msg = strerror (errno);
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g_warning ("Error handling signal: %s", msg);
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}
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if (count != 1)
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{
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g_warning ("Unexpectedly failed to read byte from signal pipe\n");
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return TRUE;
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}
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break;
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}
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switch (signal)
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{
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case 'T': /* SIGTERM */
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meta_quit (META_EXIT_SUCCESS);
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break;
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default:
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g_warning ("Spurious character '%c' read from signal pipe", signal);
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}
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return TRUE;
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return G_SOURCE_REMOVE;
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}
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/**
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@ -418,7 +372,6 @@ meta_init (void)
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{
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struct sigaction act;
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sigset_t empty_mask;
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GIOChannel *channel;
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sigemptyset (&empty_mask);
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act.sa_handler = SIG_IGN;
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@ -433,20 +386,7 @@ meta_init (void)
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g_strerror (errno));
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#endif
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if (pipe (signal_pipe_fds) != 0)
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g_printerr ("Failed to create signal pipe: %s\n",
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g_strerror (errno));
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channel = g_io_channel_unix_new (signal_pipe_fds[0]);
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g_io_channel_set_flags (channel, G_IO_FLAG_NONBLOCK, NULL);
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g_io_add_watch (channel, G_IO_IN, (GIOFunc) on_signal, NULL);
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g_io_channel_set_close_on_unref (channel, TRUE);
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g_io_channel_unref (channel);
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act.sa_handler = &signal_handler;
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if (sigaction (SIGTERM, &act, NULL) < 0)
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g_printerr ("Failed to register SIGTERM handler: %s\n",
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g_strerror (errno));
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g_unix_signal_add (SIGTERM, on_sigterm, NULL);
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if (g_getenv ("MUTTER_VERBOSE"))
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meta_set_verbose (TRUE);
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@ -28,6 +28,7 @@
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#include <cairo.h>
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#include "window-private.h"
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#include "meta-weston-launch.h"
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#include <meta/meta-cursor-tracker.h>
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typedef struct _MetaWaylandCompositor MetaWaylandCompositor;
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@ -148,6 +149,9 @@ struct _MetaWaylandCompositor
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struct wl_client *xwayland_client;
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struct wl_resource *xserver_resource;
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MetaLauncher *launcher;
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int drm_fd;
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MetaWaylandSeat *seat;
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/* This surface is only used to keep drag of the implicit grab when
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@ -338,6 +342,8 @@ void meta_wayland_compositor_repick (MetaWaylandComp
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void meta_wayland_compositor_set_input_focus (MetaWaylandCompositor *compositor,
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MetaWindow *window);
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MetaLauncher *meta_wayland_compositor_get_launcher (MetaWaylandCompositor *compositor);
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void meta_wayland_surface_free (MetaWaylandSurface *surface);
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#endif /* META_WAYLAND_PRIVATE_H */
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@ -50,6 +50,7 @@
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#include <meta/main.h>
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#include "frame.h"
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#include "meta-idle-monitor-private.h"
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#include "meta-weston-launch.h"
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#include "monitor-private.h"
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static MetaWaylandCompositor _meta_wayland_compositor;
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@ -1529,6 +1530,9 @@ meta_wayland_init (void)
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MetaWaylandCompositor *compositor = &_meta_wayland_compositor;
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guint event_signal;
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MetaMonitorManager *monitors;
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ClutterBackend *backend;
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CoglContext *cogl_context;
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CoglRenderer *cogl_renderer;
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memset (compositor, 0, sizeof (MetaWaylandCompositor));
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@ -1565,9 +1569,35 @@ meta_wayland_init (void)
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clutter_wayland_set_compositor_display (compositor->wayland_display);
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if (getenv ("WESTON_LAUNCHER_SOCK"))
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compositor->launcher = meta_launcher_new ();
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if (clutter_init (NULL, NULL) != CLUTTER_INIT_SUCCESS)
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g_error ("Failed to initialize Clutter");
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backend = clutter_get_default_backend ();
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cogl_context = clutter_backend_get_cogl_context (backend);
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cogl_renderer = cogl_display_get_renderer (cogl_context_get_display (cogl_context));
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if (cogl_renderer_get_winsys_id (cogl_renderer) == COGL_WINSYS_ID_EGL_KMS)
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compositor->drm_fd = cogl_kms_renderer_get_kms_fd (cogl_renderer);
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else
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compositor->drm_fd = -1;
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if (compositor->drm_fd >= 0)
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{
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GError *error;
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meta_launcher_set_drm_fd (compositor->launcher, compositor->drm_fd);
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error = NULL;
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if (!meta_launcher_set_master (compositor->launcher, TRUE, &error))
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{
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g_error ("Failed to become DRM master: %s", error->message);
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g_error_free (error);
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}
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}
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meta_monitor_manager_initialize ();
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monitors = meta_monitor_manager_get ();
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g_signal_connect (monitors, "monitors-changed",
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@ -1630,5 +1660,16 @@ meta_wayland_init (void)
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void
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meta_wayland_finalize (void)
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{
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meta_xwayland_stop (meta_wayland_compositor_get_default ());
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MetaWaylandCompositor *compositor;
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compositor = meta_wayland_compositor_get_default ();
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meta_xwayland_stop (compositor);
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g_clear_object (&compositor->launcher);
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}
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MetaLauncher *
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meta_wayland_compositor_get_launcher (MetaWaylandCompositor *compositor)
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{
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return compositor->launcher;
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}
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432
src/wayland/meta-weston-launch.c
Normal file
432
src/wayland/meta-weston-launch.c
Normal file
@ -0,0 +1,432 @@
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/*
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* Copyright (C) 2013 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <config.h>
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#include <gio/gio.h>
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#include <gio/gunixfdmessage.h>
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#include <clutter/clutter.h>
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#include <clutter/evdev/clutter-evdev.h>
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#include <glib.h>
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#include <sys/time.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <stdlib.h>
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#include <sys/wait.h>
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#include <drm.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include "meta-weston-launch.h"
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struct _MetaLauncherClass
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{
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GObjectClass parent_class;
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void (*enter) (MetaLauncher *);
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void (*leave) (MetaLauncher *);
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};
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struct _MetaLauncher
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{
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GObject parent;
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GSocket *weston_launch;
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int drm_fd;
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gboolean vt_switched;
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GMainContext *nested_context;
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GMainLoop *nested_loop;
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GSource *inner_source;
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GSource *outer_source;
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};
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enum {
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SIGNAL_ENTER,
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SIGNAL_LEAVE,
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SIGNAL_LAST
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};
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static int signals[SIGNAL_LAST];
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G_DEFINE_TYPE (MetaLauncher, meta_launcher, G_TYPE_OBJECT);
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static gboolean
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send_message_to_wl (GSocket *weston_launch,
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void *message,
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gsize size,
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GSocketControlMessage *out_cmsg,
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GSocketControlMessage **in_cmsg,
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GError **error)
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{
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int ok;
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GInputVector in_iov = { &ok, sizeof (int) };
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GOutputVector out_iov = { message, size };
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GSocketControlMessage *out_all_cmsg[2];
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GSocketControlMessage **in_all_cmsg;
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int flags = 0;
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int i;
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out_all_cmsg[0] = out_cmsg;
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out_all_cmsg[1] = NULL;
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if (g_socket_send_message (weston_launch, NULL,
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&out_iov, 1,
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out_all_cmsg, -1,
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flags, NULL, error) != (gssize)size)
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return FALSE;
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if (g_socket_receive_message (weston_launch, NULL,
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&in_iov, 1,
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&in_all_cmsg, NULL,
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&flags, NULL, error) != sizeof (int))
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return FALSE;
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if (ok != 0)
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{
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if (ok == -1)
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g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
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"Got failure from weston-launch");
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else
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g_set_error (error, G_IO_ERROR, g_io_error_from_errno (-ok),
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"Got failure from weston-launch: %s", strerror (-ok));
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for (i = 0; in_all_cmsg && in_all_cmsg[i]; i++)
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g_object_unref (in_all_cmsg[i]);
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g_free (in_all_cmsg);
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return FALSE;
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}
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if (in_all_cmsg && in_all_cmsg[0])
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{
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for (i = 1; in_all_cmsg[i]; i++)
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g_object_unref (in_all_cmsg[i]);
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*in_cmsg = in_all_cmsg[0];
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}
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g_free (in_all_cmsg);
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return TRUE;
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}
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gboolean
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meta_launcher_set_master (MetaLauncher *self,
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gboolean master,
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GError **error)
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{
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struct weston_launcher_set_master message;
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GSocketControlMessage *cmsg;
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gboolean ok;
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message.header.opcode = WESTON_LAUNCHER_DRM_SET_MASTER;
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message.set_master = master;
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cmsg = g_unix_fd_message_new ();
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if (g_unix_fd_message_append_fd (G_UNIX_FD_MESSAGE (cmsg),
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self->drm_fd, error) == FALSE)
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{
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g_object_unref (cmsg);
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return FALSE;
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}
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ok = send_message_to_wl (self->weston_launch, &message,
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sizeof message, cmsg, NULL, error);
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g_object_unref (cmsg);
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return ok;
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}
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int
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meta_launcher_open_input_device (MetaLauncher *self,
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const char *name,
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int flags,
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GError **error)
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{
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struct weston_launcher_open *message;
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GSocketControlMessage *cmsg;
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gboolean ok;
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gsize size;
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int *fds, n_fd;
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int ret;
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size = sizeof (struct weston_launcher_open) + strlen (name) + 1;
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message = g_malloc (size);
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message->header.opcode = WESTON_LAUNCHER_OPEN;
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message->flags = flags;
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strcpy (message->path, name);
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message->path[strlen(name)] = 0;
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ok = send_message_to_wl (self->weston_launch, message, size,
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NULL, &cmsg, error);
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if (ok)
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{
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g_assert (G_IS_UNIX_FD_MESSAGE (cmsg));
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fds = g_unix_fd_message_steal_fds (G_UNIX_FD_MESSAGE (cmsg), &n_fd);
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g_assert (n_fd == 1);
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ret = fds[0];
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g_free (fds);
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g_object_unref (cmsg);
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}
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else
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ret = -1;
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||||
|
||||
g_free (message);
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return ret;
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||||
}
|
||||
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static void
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meta_launcher_finalize (GObject *object)
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||||
{
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MetaLauncher *launcher = META_LAUNCHER (object);
|
||||
|
||||
g_source_destroy (launcher->outer_source);
|
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g_source_destroy (launcher->inner_source);
|
||||
|
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g_main_loop_unref (launcher->nested_loop);
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g_main_context_unref (launcher->nested_context);
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||||
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g_object_unref (launcher->weston_launch);
|
||||
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||||
G_OBJECT_CLASS (meta_launcher_parent_class)->finalize (object);
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||||
}
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||||
|
||||
static void
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meta_launcher_enter (MetaLauncher *launcher)
|
||||
{
|
||||
GError *error;
|
||||
|
||||
error = NULL;
|
||||
if (!meta_launcher_set_master (launcher, TRUE, &error))
|
||||
{
|
||||
g_critical ("Failed to become DRM master: %s", error->message);
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g_error_free (error);
|
||||
}
|
||||
|
||||
clutter_evdev_reclaim_devices ();
|
||||
}
|
||||
|
||||
static void
|
||||
meta_launcher_leave (MetaLauncher *launcher)
|
||||
{
|
||||
GError *error;
|
||||
|
||||
error = NULL;
|
||||
if (!meta_launcher_set_master (launcher, FALSE, &error))
|
||||
{
|
||||
g_critical ("Failed to release DRM master: %s", error->message);
|
||||
g_error_free (error);
|
||||
}
|
||||
|
||||
clutter_evdev_release_devices ();
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}
|
||||
|
||||
|
||||
static int
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on_evdev_device_open (const char *path,
|
||||
int flags,
|
||||
gpointer user_data,
|
||||
GError **error)
|
||||
{
|
||||
MetaLauncher *launcher = user_data;
|
||||
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||||
return meta_launcher_open_input_device (launcher, path, flags, error);
|
||||
}
|
||||
|
||||
static void
|
||||
handle_vt_enter (MetaLauncher *launcher)
|
||||
{
|
||||
g_assert (launcher->vt_switched);
|
||||
|
||||
g_main_loop_quit (launcher->nested_loop);
|
||||
}
|
||||
|
||||
static void
|
||||
handle_request_vt_switch (MetaLauncher *launcher)
|
||||
{
|
||||
struct weston_launcher_message message;
|
||||
GError *error;
|
||||
gboolean ok;
|
||||
|
||||
g_signal_emit (launcher, signals[SIGNAL_LEAVE], 0);
|
||||
|
||||
message.opcode = WESTON_LAUNCHER_CONFIRM_VT_SWITCH;
|
||||
|
||||
error = NULL;
|
||||
ok = send_message_to_wl (launcher->weston_launch, &message,
|
||||
sizeof (message), NULL, NULL, &error);
|
||||
if (!ok) {
|
||||
g_warning ("Failed to acknowledge VT switch: %s", error->message);
|
||||
g_error_free (error);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
g_assert (!launcher->vt_switched);
|
||||
launcher->vt_switched = TRUE;
|
||||
|
||||
/* We can't do anything at this point, because we don't
|
||||
have input devices and we don't have the DRM master,
|
||||
so let's run a nested busy loop until the VT is reentered */
|
||||
g_main_loop_run (launcher->nested_loop);
|
||||
|
||||
g_assert (launcher->vt_switched);
|
||||
launcher->vt_switched = FALSE;
|
||||
|
||||
g_signal_emit (launcher, signals[SIGNAL_ENTER], 0);
|
||||
}
|
||||
|
||||
static void
|
||||
on_socket_readable (GSocket *socket,
|
||||
GIOCondition condition,
|
||||
gpointer user_data)
|
||||
{
|
||||
MetaLauncher *launcher = user_data;
|
||||
struct weston_launcher_message header;
|
||||
gssize read;
|
||||
GError *error;
|
||||
|
||||
if ((condition & G_IO_IN) == 0)
|
||||
return;
|
||||
|
||||
error = NULL;
|
||||
read = g_socket_receive (socket, (char*)&header, sizeof(header), NULL, &error);
|
||||
if (read < (gssize)sizeof(header))
|
||||
{
|
||||
g_warning ("Error reading from weston-launcher socket: %s", error->message);
|
||||
g_error_free (error);
|
||||
return;
|
||||
}
|
||||
|
||||
switch (header.opcode)
|
||||
{
|
||||
case WESTON_LAUNCHER_SERVER_REQUEST_VT_SWITCH:
|
||||
handle_request_vt_switch (launcher);
|
||||
break;
|
||||
|
||||
case WESTON_LAUNCHER_SERVER_VT_ENTER:
|
||||
handle_vt_enter (launcher);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
env_get_fd (const char *env)
|
||||
{
|
||||
const char *value;
|
||||
|
||||
value = g_getenv (env);
|
||||
|
||||
if (value == NULL)
|
||||
return -1;
|
||||
else
|
||||
return g_ascii_strtoll (value, NULL, 10);
|
||||
}
|
||||
|
||||
static void
|
||||
meta_launcher_init (MetaLauncher *self)
|
||||
{
|
||||
int launch_fd;
|
||||
|
||||
launch_fd = env_get_fd ("WESTON_LAUNCHER_SOCK");
|
||||
if (launch_fd < 0)
|
||||
g_error ("Invalid mutter-launch socket");
|
||||
|
||||
self->weston_launch = g_socket_new_from_fd (launch_fd, NULL);
|
||||
|
||||
clutter_evdev_set_open_callback (on_evdev_device_open, self);
|
||||
|
||||
self->nested_context = g_main_context_new ();
|
||||
self->nested_loop = g_main_loop_new (self->nested_context, FALSE);
|
||||
|
||||
self->outer_source = g_socket_create_source (self->weston_launch, G_IO_IN, NULL);
|
||||
g_source_set_callback (self->outer_source, (GSourceFunc)on_socket_readable, self, NULL);
|
||||
g_source_attach (self->outer_source, NULL);
|
||||
g_source_unref (self->outer_source);
|
||||
|
||||
self->inner_source = g_socket_create_source (self->weston_launch, G_IO_IN, NULL);
|
||||
g_source_set_callback (self->inner_source, (GSourceFunc)on_socket_readable, self, NULL);
|
||||
g_source_attach (self->inner_source, self->nested_context);
|
||||
g_source_unref (self->inner_source);
|
||||
}
|
||||
|
||||
static void
|
||||
meta_launcher_class_init (MetaLauncherClass *klass)
|
||||
{
|
||||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||||
|
||||
object_class->finalize = meta_launcher_finalize;
|
||||
|
||||
klass->enter = meta_launcher_enter;
|
||||
klass->leave = meta_launcher_leave;
|
||||
|
||||
signals[SIGNAL_ENTER] = g_signal_new ("enter",
|
||||
G_TYPE_FROM_CLASS (klass),
|
||||
G_SIGNAL_RUN_FIRST,
|
||||
G_STRUCT_OFFSET (MetaLauncherClass, enter),
|
||||
NULL, NULL, /* accumulator */
|
||||
g_cclosure_marshal_VOID__VOID,
|
||||
G_TYPE_NONE, 0);
|
||||
|
||||
signals[SIGNAL_LEAVE] = g_signal_new ("leave",
|
||||
G_TYPE_FROM_CLASS (klass),
|
||||
G_SIGNAL_RUN_FIRST,
|
||||
G_STRUCT_OFFSET (MetaLauncherClass, leave),
|
||||
NULL, NULL, /* accumulator */
|
||||
g_cclosure_marshal_VOID__VOID,
|
||||
G_TYPE_NONE, 0);
|
||||
}
|
||||
|
||||
MetaLauncher *
|
||||
meta_launcher_new (void)
|
||||
{
|
||||
return g_object_new (META_TYPE_LAUNCHER, NULL);
|
||||
}
|
||||
|
||||
gboolean
|
||||
meta_launcher_activate_vt (MetaLauncher *launcher,
|
||||
int vt,
|
||||
GError **error)
|
||||
{
|
||||
struct weston_launcher_activate_vt message;
|
||||
|
||||
message.header.opcode = WESTON_LAUNCHER_ACTIVATE_VT;
|
||||
message.vt = vt;
|
||||
|
||||
return send_message_to_wl (launcher->weston_launch, &message,
|
||||
sizeof (message), NULL, NULL, error);
|
||||
}
|
||||
|
||||
void
|
||||
meta_launcher_set_drm_fd (MetaLauncher *launcher,
|
||||
int drm_fd)
|
||||
{
|
||||
launcher->drm_fd = drm_fd;
|
||||
}
|
||||
54
src/wayland/meta-weston-launch.h
Normal file
54
src/wayland/meta-weston-launch.h
Normal file
@ -0,0 +1,54 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Red Hat, Inc.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 of the
|
||||
* License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
||||
* 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef META_WESTON_LAUNCH_H
|
||||
#define META_WESTON_LAUNCH_H
|
||||
|
||||
#include <glib-object.h>
|
||||
#include "weston-launch.h"
|
||||
|
||||
#define META_TYPE_LAUNCHER (meta_launcher_get_type())
|
||||
#define META_LAUNCHER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_LAUNCHER, MetaLauncher))
|
||||
#define META_LAUNCHER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), META_TYPE_LAUNCHER, MetaLauncherClass))
|
||||
#define META_IS_LAUNCHER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_LAUNCHER))
|
||||
#define META_IS_LAUNCHER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), META_TYPE_LAUNCHER))
|
||||
#define META_LAUNCHER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), META_LAUNCHER, MetaLauncherClass))
|
||||
|
||||
typedef struct _MetaLauncher MetaLauncher;
|
||||
typedef struct _MetaLauncherClass MetaLauncherClass;
|
||||
|
||||
GType meta_launcher_get_type (void) G_GNUC_CONST;
|
||||
|
||||
MetaLauncher *meta_launcher_new (void);
|
||||
|
||||
gboolean meta_launcher_activate_vt (MetaLauncher *self,
|
||||
int number,
|
||||
GError **error);
|
||||
|
||||
void meta_launcher_set_drm_fd (MetaLauncher *self,
|
||||
int drm_fd);
|
||||
gboolean meta_launcher_set_master (MetaLauncher *self,
|
||||
gboolean master,
|
||||
GError **error);
|
||||
int meta_launcher_open_input_device (MetaLauncher *self,
|
||||
const char *name,
|
||||
int flags,
|
||||
GError **error);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user