4 files changed, 64 insertions, 3 deletions
diff --git a/system/include/net/arpa/inet.h b/system/include/net/arpa/inet.h
index af7845fd..06d44183 100644
--- a/system/include/net/arpa/inet.h
+++ b/system/include/net/arpa/inet.h
@@ -1,9 +1,27 @@
-/* */
+
+#ifndef _NET_ARPA_INET_H
+#define _NET_ARPA_INET_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #include <stdint.h>
 
+uint32_t htonl(uint32_t hostlong);
+uint16_t htons(uint16_t hostshort);
 uint32_t ntohl(uint32_t netlong);
-
 uint16_t ntohs(uint16_t netshort);
 
 int inet_aton(const char *cp, struct in_addr *addr);
+char *inet_ntoa(struct in_addr in);
+
+typedef long in_addr_t;
+in_addr_t inet_addr(const char *cp);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/system/include/net/netdb.h b/system/include/net/netdb.h
index ee33be5f..4151ccb5 100644
--- a/system/include/net/netdb.h
+++ b/system/include/net/netdb.h
@@ -1,4 +1,11 @@
 
+#ifndef _NET_NETDB_H
+#define _NET_NETDB_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct addrinfo
 {
   int ai_flags;
@@ -25,3 +32,9 @@ struct hostent
   char **h_addr_list;
 };
 
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/system/include/net/netinet/in.h b/system/include/net/netinet/in.h
index 7ac40c03..4547696b 100644
--- a/system/include/net/netinet/in.h
+++ b/system/include/net/netinet/in.h
@@ -1,4 +1,17 @@
 
+#ifndef _NET_NETINET_IN_H
+#define _NET_NETINET_IN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum {
+    IPPROTO_IP = 0,
+#define IPPROTO_IP IPPROTO_IP
+    IPPROTO_MAX
+};
+
 #define INET_ADDRSTRLEN 16
 
 #define INADDR_ANY 0
@@ -26,3 +39,9 @@ struct sockaddr_in6 {
   int             sin6_scope_id;
 };
 
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/system/include/sys/socket.h b/system/include/sys/socket.h
index 68e06509..2c23ddb7 100644
--- a/system/include/sys/socket.h
+++ b/system/include/sys/socket.h
@@ -1,4 +1,9 @@
-/* */
+#ifndef _SYS_SOCKET_H
+#define _SYS_SOCKET_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #define SOMAXCONN 128
 #define PF_INET 2
@@ -53,3 +58,9 @@ struct msghdr
   int           msg_flags;
 };
 
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+