explain_gethostname_or_die - get/set hostname and report errors

       libexplain version 1.4
       Copyright (C) 2009 Peter Miller

                                                                                   explain_gethostname_or_die(3)

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

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

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

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

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

       explain_gethostname_or_die - get/set hostname and report errors

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

       The  explain_gethostname_on_error  function always returns the value return by the wrapped gethostname(2)
       system call.

gethostname(2)
               get/set hostname

       explain_gethostname(3)
               explain gethostname(2) errors

       exit(2) terminate the calling process

       #include <libexplain/gethostname.h>
       void explain_gethostname_or_die(char *data, size_t data_size);
       intexplain_gethostname_on_error(char *data, size_t data_size);