NAME

     getsockname — get socket name

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/types.h>
     #include <sys/socket.h>

     int
     getsockname(int s, struct sockaddr * restrict name, socklen_t * restrict namelen);

DESCRIPTION

     The getsockname() system call returns the current name for the specified socket.  The
     namelen argument should be initialized to indicate the amount of space pointed to by name.
     On return it contains the actual size of the name returned (in bytes).

RETURN VALUES

     The getsockname() function returns the value 0 if successful; otherwise the value -1 is
     returned and the global variable errno is set to indicate the error.

ERRORS

     The call succeeds unless:

     [EBADF]            The argument s is not a valid descriptor.

     [ECONNRESET]       The connection has been reset by the peer.

     [EINVAL]           The value of the namelen argument is not valid.

     [ENOTSOCK]         The argument s is a file, not a socket.

     [ENOBUFS]          Insufficient resources were available in the system to perform the
                        operation.

     [EFAULT]           The name argument points to memory not in a valid part of the process
                        address space.

SEE ALSO

     bind(2), getpeername(2), socket(2)

HISTORY

     The getsockname() system call appeared in 4.2BSD.

BUGS

     Names bound to sockets in the UNIX domain are inaccessible; getsockname() returns a zero
     length name.