Added 'direct' session backend

include/session/interface.h

@@ -16,5 +16,6 @@ struct wlr_session {
 };
 
 extern const struct session_interface session_logind_iface;
+extern const struct session_interface session_direct_iface;
 
 #endif

session/CMakeLists.txt

@@ -4,6 +4,7 @@ include_directories(
 
 set(sources
     session.c
+    direct.c
 )
 
 set(libs

session/direct.c

@@ -0,0 +1,50 @@
+#define _POSIX_C_SOURCE 200809L
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <wayland-server.h>
+
+#include "session/interface.h"
+#include "common/log.h"
+
+struct direct_session {
+	struct wlr_session base;
+};
+
+static int direct_session_open(struct wlr_session *restrict base,
+	const char *restrict path) {
+	return open(path, O_RDWR | O_CLOEXEC);
+}
+
+static void direct_session_close(struct wlr_session *base, int fd) {
+	close(fd);
+}
+
+static void direct_session_finish(struct wlr_session *base) {
+	struct direct_session *session = wl_container_of(base, session, base);
+
+	free(session);
+}
+
+static struct wlr_session *direct_session_start(void) {
+	struct direct_session *session = calloc(1, sizeof(*session));
+	if (!session) {
+		wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
+		return NULL;
+	}
+
+	wlr_log(L_INFO, "Successfully loaded direct session");
+
+	session->base.iface = session_direct_iface;
+	return &session->base;
+}
+
+const struct session_interface session_direct_iface = {
+	.start = direct_session_start,
+	.finish = direct_session_finish,
+	.open = direct_session_open,
+	.close = direct_session_close,
+};

session/session.c

@@ -9,6 +9,7 @@ static const struct session_interface *ifaces[] = {
 #ifdef HAS_SYSTEMD
 	&session_logind_iface,
 #endif
+	&session_direct_iface,
 	NULL,
 };