ipc: structure for unix sockets

src/include/kernel/socket.h

@@ -0,0 +1,36 @@
+/*
+ * lux - a lightweight unix-like operating system
+ * Omar Elghoul, 2024
+ * 
+ * Core Microkernel
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stddef.h>
+
+/* socket family/domain - only Unix sockets will be implemented in the kernel */
+#define AF_UNIX                 1
+#define AF_LOCAL                AF_UNIX
+
+/* socket type - these will all be the same for the local Unix sockets */
+/* the kernel will ensure packets are sent and received in the same order */
+#define SOCK_STREAM             1       // stream-oriented
+#define SOCK_DGRAM              2       // datagram-oriented
+#define SOCK_SEQPACKET          3       // connection-oriented
+
+typedef uint32_t sa_family_t;
+typedef size_t socklen_t;
+
+/* generic socket */
+struct sockaddr {
+    sa_family_t sa_family;
+    char sa_data[];
+}
+
+/* Unix domain socket */
+struct sockaddr_un {
+    sa_family_t sun_family;     // AF_UNIX
+    char sun_path[512];         // filename
+}