explain_getdomainname_or_die - get domain name and report errors

       libexplain version 1.4
       Copyright (C) 2009 Peter Miller

                                                                                 explain_getdomainname_or_die(3)

       The explain_getdomainname_or_die function is used to call the getdomainname(2) system call. On failure an
       explanation  will be printed to stderr, obtained from the explain_getdomainname(3) function, and then the
       process terminates by calling exit(EXIT_FAILURE).

       The explain_getdomainname_on_error function is used to call the getdomainname(2) system call. On  failure
       an  explanation will be printed to stderr, obtained from the explain_getdomainname(3) function, but still
       returns to the caller.

       data    The data, exactly as to be passed to the getdomainname(2) system call.

       data_size
               The data_size, exactly as to be passed to the getdomainname(2) system call.

       The explain_getdomainname_or_die function is intended to be used in a fashion similar  to  the  following
       example:
              explain_getdomainname_or_die(data, data_size);

       explain_getdomainname_or_die - get domain name and report errors

       The explain_getdomainname_or_die  function  only  returns  on  success,  see  getdomainname(2)  for  more
       information. On failure, prints an explanation and exits, it does not return.

       The   explain_getdomainname_on_error   function   always   returns   the  value  return  by  the  wrapped
       getdomainname(2) system call.

getdomainname(2)
               get domain name

       explain_getdomainname(3)
               explain getdomainname(2) errors

       exit(2) terminate the calling process

       #include <libexplain/getdomainname.h>
       void explain_getdomainname_or_die(char *data, size_t data_size);
       int explain_getdomainname_on_error(char *data, size_t data_size);