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From 56c2e4efdcef14531dcf752e89117d22a21ec8ad Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
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Date: Wed, 9 Dec 2020 15:18:29 +0100
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Subject: [PATCH 2/2] xwayland: Make sure /tmp/.X11-unix/ exists
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When we're running under a polyinstantiated SELinux environment, we'll
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likely start with an isolated and empty /tmp, meannig no /tmp/.X11-unix
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directory to add things to. To make it possible to still function in
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this kind of setup, make sure said directory exists.
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---
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src/wayland/meta-xwayland.c | 30 ++++++++++++++++++++++++++++--
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1 file changed, 28 insertions(+), 2 deletions(-)
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diff --git a/src/wayland/meta-xwayland.c b/src/wayland/meta-xwayland.c
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index 699d5561c..f3df9766e 100644
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--- a/src/wayland/meta-xwayland.c
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+++ b/src/wayland/meta-xwayland.c
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@@ -30,6 +30,7 @@
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#include <glib-unix.h>
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#include <glib.h>
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#include <sys/socket.h>
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+#include <sys/stat.h>
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#include <sys/un.h>
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#include "compositor/meta-surface-actor-wayland.h"
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@@ -436,9 +437,27 @@ meta_xwayland_override_display_number (int number)
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display_number_override = number;
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}
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+static gboolean
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+ensure_x11_unix_dir (GError **error)
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+{
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+ if (mkdir ("/tmp/.X11-unix", 01777) != 0)
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+ {
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+ if (errno == EEXIST)
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+ return TRUE;
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+
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+ g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errno),
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+ "Failed to create directory \"/tmp/.X11-unix\": %s",
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+ g_strerror (errno));
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+ return FALSE;
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+ }
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+
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+ return TRUE;
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+}
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+
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static gboolean
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choose_xdisplay (MetaXWaylandManager *manager)
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{
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+ g_autoptr (GError) error = NULL;
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int display = 0;
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char *lock_file = NULL;
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@@ -447,10 +466,15 @@ choose_xdisplay (MetaXWaylandManager *manager)
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else if (g_getenv ("RUNNING_UNDER_GDM"))
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display = 1024;
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- do
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+ if (!ensure_x11_unix_dir (&error))
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{
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- g_autoptr (GError) error = NULL;
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+ g_warning ("Failed to ensure X11 socket directory: %s",
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+ error->message);
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+ return FALSE;
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+ }
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+ do
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+ {
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lock_file = create_lock_file (display, &display, &error);
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if (!lock_file)
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{
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@@ -466,6 +490,7 @@ choose_xdisplay (MetaXWaylandManager *manager)
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if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_ADDRESS_IN_USE))
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{
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meta_verbose ("Failed to bind abstract socket: %s\n", error->message);
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+ g_clear_error (&error);
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display++;
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continue;
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}
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@@ -480,6 +505,7 @@ choose_xdisplay (MetaXWaylandManager *manager)
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if (manager->unix_fd < 0)
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{
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meta_verbose ("Failed to bind unix socket: %s\n", error->message);
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+ g_clear_error (&error);
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unlink (lock_file);
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close (manager->abstract_fd);
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display++;
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--
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2.29.2
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