backend/headless: dup DRM FD in wlr_headless_backend_create_with_renderer
We were not dup'ing the DRM FD coming from wlr_renderer_get_drm_fd, resulting in a double-close on backend destroy.
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@ -248,9 +248,15 @@ struct wlr_backend *wlr_headless_backend_create_with_renderer(
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}
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backend->has_parent_renderer = true;
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backend->drm_fd = wlr_renderer_get_drm_fd(renderer);
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if (backend->drm_fd < 0) {
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wlr_log(WLR_ERROR, "Failed to get DRM device FD from renderer");
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int drm_fd = wlr_renderer_get_drm_fd(renderer);
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if (drm_fd < 0) {
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wlr_log(WLR_ERROR, "Failed to get DRM device FD from parent renderer");
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backend->drm_fd = -1;
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} else {
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backend->drm_fd = fcntl(drm_fd, F_DUPFD_CLOEXEC, 0);
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if (backend->drm_fd < 0) {
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wlr_log_errno(WLR_ERROR, "fcntl(F_DUPFD_CLOEXEC) failed");
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}
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}
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if (!backend_init(backend, display, renderer)) {
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