server: Avoid using "wayland-0" as WAYLAND_DISPLAY
See
-#define _POSIX_C_SOURCE 200112L
+#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <stdbool.h>
#include <stdlib.h>
+#include <string.h>
#include <wayland-server-core.h>
#include <wlr/backend.h>
#include <wlr/backend/headless.h>
@@ -151,7 +152,16 @@ bool server_init(struct sway_server *server) {
wlr_primary_selection_v1_device_manager_create(server->wl_display);
wlr_viewporter_create(server->wl_display);
- server->socket = wl_display_add_socket_auto(server->wl_display);
+ // Avoid using "wayland-0" as display socket
+ char name_candidate[16];
+ for (int i = 1; i <= 32; ++i) {
+ sprintf(name_candidate, "wayland-%d", i);
+ if (wl_display_add_socket(server->wl_display, name_candidate) >= 0) {
+ server->socket = strdup(name_candidate);
+ break;
+ }
+ }
+
if (!server->socket) {
sway_log(SWAY_ERROR, "Unable to open wayland socket");
wlr_backend_destroy(server->backend);
