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NAME

       explain_gethostname_or_die - get/set hostname and report errors

SYNOPSIS

       #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);

DESCRIPTION

       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.

RETURN VALUE

       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.

EXAMPLE

       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);

SEE ALSO

       gethostname(2)
               get/set hostname

       explain_gethostname(3)
               explain gethostname(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.19
       Copyright (C) 2009 Peter Miller

                                                 explain_gethostname_or_die(3)