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| explain_adjtime_or_die(3) | FreeBSD Library Functions Manual | explain_adjtime_or_die(3) |
NAME
explain_adjtime_or_die - smoothly tune kernel clock and report errorsSYNOPSIS
#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 1.3Copyright (C) 2009 Peter Miller
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