NAME
getsockname —
get socket name
LIBRARY
library “libc”
SYNOPSIS
#include
<sys/types.h>
#include <sys/socket.h>
int
getsockname(int
s, struct sockaddr *
restrict name, socklen_t
* restrict namelen);
DESCRIPTION
Thegetsockname()
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
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.