bionic (3) explain_fprintf_or_die.3.gz

NAME

       explain_fprintf_or_die - formatted output conversion and report errors

SYNOPSIS

       #include <libexplain/fprintf.h>
       int explain_fprintf_or_die(FILE *fp, const char *format, ...);
       int explain_fprintf_on_error(FILE *fp, const char *format, ...);

DESCRIPTION

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

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

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

       format  The format, exactly as to be passed to the fprintf(3) system call.

RETURN VALUE

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

       The explain_fprintf_on_error function always returns the value return by the  wrapped  fprintf(3)  system
       call.

EXAMPLE

       The explain_fprintf_or_die function is intended to be used in a fashion similar to the following example:
              int result = explain_fprintf_or_die(fp, format, ...);

SEE ALSO

       fprintf(3)
               formatted output conversion

       explain_fprintf(3)
               explain fprintf(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2010 Peter Miller

                                                                                       explain_fprintf_or_die(3)