Initial implementation of seatd and libseat

examples/simpletest/main.c

@@ -0,0 +1,60 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "libseat.h"
+
+static void handle_enable(struct libseat *backend, void *data) {
+	(void)backend;
+	int *active = (int *)data;
+	(*active)++;
+}
+
+static void handle_disable(struct libseat *backend, void *data) {
+	(void)backend;
+	int *active = (int *)data;
+	(*active)--;
+
+	libseat_disable_seat(backend);
+}
+
+int main(int argc, char *argv[]) {
+	(void)argc;
+	(void)argv;
+
+	int active = 0;
+	struct libseat_seat_listener listener = {
+		.enable_seat = handle_enable,
+		.disable_seat = handle_disable,
+	};
+	struct libseat *backend = libseat_open_seat(&listener, &active);
+	fprintf(stderr, "libseat_open_seat(listener: %p, userdata: %p) = %p\n", (void *)&listener,
+		(void *)&active, (void *)backend);
+	if (backend == NULL) {
+		fprintf(stderr, "libseat_open_seat() failed: %s\n", strerror(errno));
+		return -1;
+	}
+
+	while (active == 0) {
+		fprintf(stderr, "waiting for activation...\n");
+		libseat_dispatch(backend, -1);
+	}
+	fprintf(stderr, "active!\n");
+
+	int fd, device;
+	device = libseat_open_device(backend, "/dev/dri/card0", &fd);
+	fprintf(stderr, "libseat_open_device(backend: %p, path: %s, fd: %p) = %d\n",
+		(void *)backend, "/dev/dri/card0", (void *)&fd, device);
+	if (device == -1) {
+		fprintf(stderr, "libseat_open_device() failed: %s\n", strerror(errno));
+		libseat_close_seat(backend);
+		return 1;
+	}
+
+	close(fd);
+	libseat_close_device(backend, device);
+	libseat_close_seat(backend);
+	return 0;
+}