+/*
+ * Shared memory handling functions. See SharedMem.c
+ */
+/* Function ShmCreate: create a SysV shared memory */
+void * ShmCreate(key_t ipc_key, int shm_size, int perm, int fill);
+/* Function ShmFind: find an existing SysV shared memory */
+void * ShmFind(key_t ipc_key, int shm_size);
+/* Function ShmRemove: remove a SysV shared memory */
+int ShmRemove(key_t ipc_key, void * shm_ptr);
+/* Function CreateShm: create a POSIX shared memory */
+void * CreateShm(char * shm_name, off_t shm_size, int perm, int fill);
+/* Function FindShm: find an existing POSIX shared memory */
+void * FindShm(char * shm_name, off_t shm_size);
+/* Function RemoveShm: remove a POSIX shared memory */
+int RemoveShm(char * shm_name);
+/*
+ * Socket creation functions. See corresponding .c
+ */
+int sockconn(char *host, char *serv, int prot, int type);
+int sockbind(char *host, char *serv, int prot, int type);
+int sockbindopt(char *host, char *serv, int prot, int type, int reuse);
+
+/*
+ * General purpose functions. See corresponding .c
+ */
+int endian(void);
+int is_closing(int sock);