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GETSOCKNAME(2) FreeBSD System Calls Manual GETSOCKNAME(2)
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.
FreeBSD 14.0-RELEASE-p6 June 4, 1993 FreeBSD 14.0-RELEASE-p6