diff --git a/LibC/memory.h b/LibC/memory.h
new file mode 100644
index 0000000000..3b2f590027
--- /dev/null
+++ b/LibC/memory.h
@@ -0,0 +1 @@
+#include <string.h>
diff --git a/LibC/netdb.h b/LibC/netdb.h
index dde9beb1a2..492802f59b 100644
--- a/LibC/netdb.h
+++ b/LibC/netdb.h
@@ -16,4 +16,13 @@ struct hostent {
 
 struct hostent *gethostbyname(const char*);
 
+struct servent {
+    char* s_name;
+    char** s_aliases;
+    int s_port;
+    char* s_proto;
+};
+
+struct servent* getservbyname(const char* name, const char* protocol);
+
 __END_DECLS
diff --git a/LibC/sys/resource.h b/LibC/sys/resource.h
index e69de29bb2..7b21cf8e55 100644
--- a/LibC/sys/resource.h
+++ b/LibC/sys/resource.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <sys/cdefs.h>
+#include <sys/time.h>
+
+__BEGIN_DECLS
+
+struct rusage {
+    struct timeval ru_utime;
+    struct timeval ru_stime;
+    long ru_maxrss;
+    long ru_ixrss;
+    long ru_idrss;
+    long ru_isrss;
+    long ru_minflt;
+    long ru_majflt;
+    long ru_nswap;
+    long ru_inblock;
+    long ru_oublock;
+    long ru_msgsnd;
+    long ru_msgrcv;
+    long ru_nsignals;
+    long ru_nvcsw;
+    long ru_nivcsw;
+};
+
+#define RUSAGE_SELF 1
+#define RUSAGE_CHILDREN 2
+
+int getrusage(int who, struct rusage *usage);
+
+__END_DECLS
diff --git a/LibC/sys/socket.h b/LibC/sys/socket.h
index 42123275ec..b1dc322e1b 100644
--- a/LibC/sys/socket.h
+++ b/LibC/sys/socket.h
@@ -3,6 +3,7 @@
 #include <sys/cdefs.h>
 #include <sys/types.h>
 #include <stdint.h>
+#include <sys/un.h>
 
 __BEGIN_DECLS
 
@@ -33,12 +34,6 @@ struct sockaddr {
     char sa_data[14];
 };
 
-#define UNIX_PATH_MAX 108
-struct sockaddr_un {
-    uint16_t sun_family;
-    char sun_path[UNIX_PATH_MAX];
-};
-
 struct in_addr {
     uint32_t s_addr;
 };
@@ -56,6 +51,7 @@ struct sockaddr_in {
 #define SO_RCVTIMEO 1
 #define SO_SNDTIMEO 2
 #define SO_KEEPALIVE 3
+#define SO_ERROR 4
 
 int socket(int domain, int type, int protocol);
 int bind(int sockfd, const struct sockaddr* addr, socklen_t);
diff --git a/LibC/sys/un.h b/LibC/sys/un.h
new file mode 100644
index 0000000000..551848f3b8
--- /dev/null
+++ b/LibC/sys/un.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#define UNIX_PATH_MAX 108
+struct sockaddr_un {
+    uint16_t sun_family;
+    char sun_path[UNIX_PATH_MAX];
+};
+
+__END_DECLS