getsockname - get socket name
int getsockname(int s , struct sockaddr * name ,
socklen_t * namelen )
Getsockname returns the current name for the specified
socket. The namelen parameter should be initialized to
indicate the amount of space pointed to by name. On
return it contains the actual size of the name returned
On success, zero is returned. On error, -1 is returned,
and errno is set appropriately.
EBADF The argument s is not a valid descriptor.
The argument s is a file, not a socket.
Insufficient resources were available in the system
to perform the operation.
EFAULT The name parameter points to memory not in a valid
part of the process address space.
SVr4, 4.4BSD (the getsockname function call appeared in
4.2BSD). SVr4 documents additional ENOMEM and ENOSR error
The third argument of getsockname is in reality an `int *'
(and this is what BSD 4.* and libc4 and libc5 have). Some
POSIX confusion resulted in the present socklen_t. The
draft standard has not been adopted yet, but glibc2
already follows it and also has socklen_t. See also