NAME

       explain_ftello_or_die - get stream position and report errors

SYNOPSIS

       #include <libexplain/ftello.h>
       off_t explain_ftello_or_die(FILE *fp);
       off_t explain_ftello_on_error(FILE *fp);

DESCRIPTION

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

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

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

RETURN VALUE

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

       The  explain_ftello_on_error  function  always  returns  the value return by the wrapped ftello(3) system
       call.

EXAMPLE

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

SEE ALSO

       ftello(3)
               get stream position

       explain_ftello(3)
               explain ftello(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2013 Peter Miller

                                                                                        explain_ftello_or_die(3)