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 1.4
       Copyright (C) 2009 Peter Miller

                                                                    explain_gethostname_or_die(3)