explain_telldir_or_die - current location in directory and report errors

       libexplain version 1.4
       Copyright (C) 2009 Peter Miller

                                                                                       explain_telldir_or_die(3)

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

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

       dir     The dir, exactly as to be passed to the telldir(3) system call.

       The explain_telldir_or_die function is intended to be used in a fashion similar to the following example:
              off_t result = explain_telldir_or_die(dir);

       explain_telldir_or_die - current location in directory and report errors

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

       The explain_telldir_on_error function always returns the value return by the  wrapped  telldir(3)  system
       call.

telldir(3)
               return current location in directory stream

       explain_telldir(3)
               explain telldir(3) errors

       exit(2) terminate the calling process

       #include <libexplain/telldir.h>
       off_t explain_telldir_or_die(DIR *dir);
       off_t explain_telldir_on_error(DIR *dir);