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server: don't create headless backend twice

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This may happen when running with WLR_BACKENDS=headless.

Fixes: #1618
This commit is contained in:
Consolatis 2024-04-13 10:01:30 +02:00 • committed by Johan Malm
parent 42c09eeef8
commit 55138dbe0e
1 changed files with 19 additions and 1 deletions
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20
src/server.c
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@ -278,6 +278,15 @@ static const char helpful_seat_error_message[] =
"If the above does not work, try running with `WLR_RENDERER=pixman labwc` in\n"
"order to use the software rendering fallback\n";
static void
get_headless_backend(struct wlr_backend *backend, void *data)
{
if (wlr_backend_is_headless(backend)) {
struct wlr_backend **headless = data;
*headless = backend;
}
}
void
server_init(struct server *server)
{
@ -327,7 +336,16 @@ server_init(struct server *server)
}
/* Create headless backend to enable adding virtual outputs later on */
server->headless.backend = wlr_headless_backend_create(server->wl_display);
wlr_multi_for_each_backend(server->backend,
get_headless_backend, &server->headless.backend);
if (!server->headless.backend) {
wlr_log(WLR_DEBUG, "manually creating headless backend");
server->headless.backend = wlr_headless_backend_create(server->wl_display);
} else {
wlr_log(WLR_DEBUG, "headless backend already exists");
}
if (!server->headless.backend) {
wlr_log(WLR_ERROR, "unable to create headless backend");
exit(EXIT_FAILURE);