explain_setlinebuf_or_die - stream buffering operations and report errors

       libexplain version 1.4
       Copyright (C) 2010 Peter Miller

                                                                                    explain_setlinebuf_or_die(3)

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

       The  explain_setlinebuf_on_error  function  is  used to call the setlinebuf(3) system call. On failure an
       explanation will be printed to stderr,  obtained  from  the  explain_setlinebuf(3)  function,  but  still
       returns to the caller.

       fp      The fp, exactly as to be passed to the setlinebuf(3) system call.

       The  explain_setlinebuf_or_die  function  is  intended  to  be used in a fashion similar to the following
       example:
              explain_setlinebuf_or_die(fp);

       explain_setlinebuf_or_die - stream buffering operations and report errors

       The  explain_setlinebuf_or_die  function only returns on success, see setlinebuf(3) for more information.
       On failure, prints an explanation and exits, it does not return.

       The explain_setlinebuf_on_error function always returns the value return  by  the  wrapped  setlinebuf(3)
       system call.

setlinebuf(3)
               stream buffering operations

       explain_setlinebuf(3)
               explain setlinebuf(3) errors

       exit(2) terminate the calling process

       #include <libexplain/setlinebuf.h>
       void explain_setlinebuf_or_die(FILE *fp);
       void explain_setlinebuf_on_error(FILE *fp);