From b06535718dd61d99ca904e4dbb503b8857456c46 Mon Sep 17 00:00:00 2001
From: emersion <contact@emersion.fr>
Date: Fri, 8 Dec 2017 01:38:45 +0100
Subject: [PATCH] Do not destroy wl_client in wlr_xwayland_finish

---
 include/wlr/xwayland.h |  2 +-
 xwayland/xwayland.c    | 53 +++++++++++++++++++++++-------------------
 xwayland/xwm.c         |  9 +++++++
 3 files changed, 39 insertions(+), 25 deletions(-)

diff --git a/include/wlr/xwayland.h b/include/wlr/xwayland.h
index 455b1026..f6b43851 100644
--- a/include/wlr/xwayland.h
+++ b/include/wlr/xwayland.h
@@ -23,7 +23,7 @@ struct wlr_xwayland {
 	time_t server_start;
 
 	struct wl_event_source *sigusr1_source;
-	struct wl_listener destroy_listener;
+	struct wl_listener client_destroy;
 	struct wl_listener display_destroy;
 	struct wlr_xwm *xwm;
 	struct wlr_xwayland_cursor *cursor;
diff --git a/xwayland/xwayland.c b/xwayland/xwayland.c
index 778b959d..a4b79e73 100644
--- a/xwayland/xwayland.c
+++ b/xwayland/xwayland.c
@@ -125,39 +125,26 @@ static void exec_xwayland(struct wlr_xwayland *wlr_xwayland) {
 	execvp("Xwayland", argv);
 }
 
-static bool wlr_xwayland_init(struct wlr_xwayland *wlr_xwayland,
-	struct wl_display *wl_display, struct wlr_compositor *compositor);
-static void wlr_xwayland_finish(struct wlr_xwayland *wlr_xwayland);
-
-static void xwayland_destroy_event(struct wl_listener *listener, void *data) {
-	struct wlr_xwayland *wlr_xwayland = wl_container_of(listener, wlr_xwayland, destroy_listener);
-
-	/* don't call client destroy */
-	wlr_xwayland->client = NULL;
-	wl_list_remove(&wlr_xwayland->destroy_listener.link);
-	wlr_xwayland_finish(wlr_xwayland);
-
-	if (time(NULL) - wlr_xwayland->server_start > 5) {
-		wlr_xwayland_init(wlr_xwayland, wlr_xwayland->wl_display,
-			wlr_xwayland->compositor);
-	}
-}
-
 static void wlr_xwayland_finish(struct wlr_xwayland *wlr_xwayland) {
 	if (!wlr_xwayland || wlr_xwayland->display == -1) {
 		return;
 	}
 
+	if (wlr_xwayland->cursor != NULL) {
+		free(wlr_xwayland->cursor);
+	}
+
+	xwm_destroy(wlr_xwayland->xwm);
+
 	if (wlr_xwayland->client) {
-		wl_list_remove(&wlr_xwayland->destroy_listener.link);
-		wl_client_destroy(wlr_xwayland->client);
+		wl_list_remove(&wlr_xwayland->client_destroy.link);
+		// TODO: this segfaults in /usr/lib/libEGL_mesa.so.0
+		//wl_client_destroy(wlr_xwayland->client);
 	}
 	if (wlr_xwayland->sigusr1_source) {
 		wl_event_source_remove(wlr_xwayland->sigusr1_source);
 	}
 
-	xwm_destroy(wlr_xwayland->xwm);
-
 	safe_close(wlr_xwayland->x_fd[0]);
 	safe_close(wlr_xwayland->x_fd[1]);
 	safe_close(wlr_xwayland->wl_fd[0]);
@@ -176,6 +163,24 @@ static void wlr_xwayland_finish(struct wlr_xwayland *wlr_xwayland) {
 	 */
 }
 
+static bool wlr_xwayland_init(struct wlr_xwayland *wlr_xwayland,
+	struct wl_display *wl_display, struct wlr_compositor *compositor);
+
+static void handle_client_destroy(struct wl_listener *listener, void *data) {
+	struct wlr_xwayland *wlr_xwayland =
+		wl_container_of(listener, wlr_xwayland, client_destroy);
+
+	/* don't call client destroy */
+	wlr_xwayland->client = NULL;
+	wl_list_remove(&wlr_xwayland->client_destroy.link);
+	wlr_xwayland_finish(wlr_xwayland);
+
+	if (time(NULL) - wlr_xwayland->server_start > 5) {
+		wlr_xwayland_init(wlr_xwayland, wlr_xwayland->wl_display,
+			wlr_xwayland->compositor);
+	}
+}
+
 static void handle_display_destroy(struct wl_listener *listener, void *data) {
 	struct wlr_xwayland *wlr_xwayland =
 		wl_container_of(listener, wlr_xwayland, display_destroy);
@@ -264,9 +269,9 @@ static bool wlr_xwayland_init(struct wlr_xwayland *wlr_xwayland,
 
 	wlr_xwayland->wl_fd[0] = -1; /* not ours anymore */
 
-	wlr_xwayland->destroy_listener.notify = xwayland_destroy_event;
+	wlr_xwayland->client_destroy.notify = handle_client_destroy;
 	wl_client_add_destroy_listener(wlr_xwayland->client,
-		&wlr_xwayland->destroy_listener);
+		&wlr_xwayland->client_destroy);
 
 	struct wl_event_loop *loop = wl_display_get_event_loop(wl_display);
 	wlr_xwayland->sigusr1_source = wl_event_loop_add_signal(loop, SIGUSR1,
diff --git a/xwayland/xwm.c b/xwayland/xwm.c
index 562f2052..3250a97d 100644
--- a/xwayland/xwm.c
+++ b/xwayland/xwm.c
@@ -1045,6 +1045,12 @@ void xwm_destroy(struct wlr_xwm *xwm) {
 	if (xwm->cursor) {
 		xcb_free_cursor(xwm->xcb_conn, xwm->cursor);
 	}
+	if (xwm->colormap) {
+		xcb_free_colormap(xwm->xcb_conn, xwm->colormap);
+	}
+	if (xwm->window) {
+		xcb_destroy_window(xwm->xcb_conn, xwm->window);
+	}
 	if (xwm->event_source) {
 		wl_event_source_remove(xwm->event_source);
 	}
@@ -1052,6 +1058,9 @@ void xwm_destroy(struct wlr_xwm *xwm) {
 	wl_list_for_each_safe(xsurface, tmp, &xwm->surfaces, link) {
 		wlr_xwayland_surface_destroy(xsurface);
 	}
+	wl_list_for_each_safe(xsurface, tmp, &xwm->unpaired_surfaces, link) {
+		wlr_xwayland_surface_destroy(xsurface);
+	}
 	wl_list_remove(&xwm->compositor_surface_create.link);
 	xcb_disconnect(xwm->xcb_conn);