explain_adjtime_or_die

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.

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

COPYRIGHT

libexplain version 1.4
Copyright (C) 2009 Peter Miller