NAME

       explain_adjtime_or_die - smoothly tune kernel clock and report errors

SYNOPSIS

       #include <libexplain/adjtime.h>
       void explain_adjtime_or_die(const struct timeval *delta, struct timeval *olddelta);
       int explain_adjtime_on_error(const struct timeval *delta, struct timeval *olddelta);

DESCRIPTION

       The explain_adjtime_or_die function is used to call the adjtime(2) system call. On failure
       an explanation will be printed to stderr, obtained from the  explain_adjtime(3)  function,
       and then the process terminates by calling exit(EXIT_FAILURE).

       The  explain_adjtime_on_error  function  is  used  to  call the adjtime(2) system call. On
       failure an explanation will be printed to stderr,  obtained  from  the  explain_adjtime(3)
       function, but still returns to the caller.

       delta   The delta, exactly as to be passed to the adjtime(2) system call.

       olddelta
               The olddelta, exactly as to be passed to the adjtime(2) system call.

RETURN VALUE

       The  explain_adjtime_or_die  function  only  returns  on  success, see adjtime(2) for more
       information. On failure, prints an explanation and exits, it does not return.

       The explain_adjtime_on_error function always returns  the  value  return  by  the  wrapped
       adjtime(2) system call.

EXAMPLE

       The  explain_adjtime_or_die  function  is  intended to be used in a fashion similar to the
       following example:
              explain_adjtime_or_die(delta, olddelta);

SEE ALSO

       adjtime(2)
               smoothly tune kernel clock

       explain_adjtime(3)
               explain adjtime(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2009 Peter Miller

                                                                        explain_adjtime_or_die(3)