/* Copies the user's login name to NAME.
The array pointed to by NAME has room for SIZE bytes.
Returns 0 if successful. Upon error, an error number is returned, or -1 in
the case that the login name cannot be found but no specific error is
/* Copies the user's login name to NAME.
The array pointed to by NAME has room for SIZE bytes.
Returns 0 if successful. Upon error, an error number is returned, or -1 in
the case that the login name cannot be found but no specific error is