input. Some other system calls (for example, getsockname (2), getpeername (2), recvfrom (2), and accept ... Various system calls ( accept (2), recvfrom (2), getsockname (2), getpee…used to read and write data. getsockname (2) returns the local socket address and getpeername ... connect (2), bind (2), accept (2), getsockname (2), getpeername (2)), which are ge…getpgrp (2) getpid (2) getppid (2) getsockname (2) getsockopt (2) getuid (2) htonl (3) Added