void* mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
int munmap(void *addr, size_t len);
int mprotect(void *addr, size_t len, int prot);
int msync(void *addr, size_t len, int flags);
int mlock(const void *addr, size_t len);
int munlock(const void *addr, size_t len);
void* mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
int munmap(void *addr, size_t len);
int mprotect(void *addr, size_t len, int prot);
int msync(void *addr, size_t len, int flags);
int mlock(const void *addr, size_t len);
int munlock(const void *addr, size_t len);