1explain_adjtime_or_die(3)  Library Functions Manual  explain_adjtime_or_die(3)
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NAME

6       explain_adjtime_or_die - smoothly tune kernel clock and report errors
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SYNOPSIS

9       #include <libexplain/adjtime.h>
10       void explain_adjtime_or_die(const struct timeval *delta, struct timeval
11       *olddelta);
12       int  explain_adjtime_on_error(const  struct  timeval   *delta,   struct
13       timeval *olddelta);
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DESCRIPTION

16       The explain_adjtime_or_die function is used to call the adjtime(2) sys‐
17       tem call. On failure an explanation will be printed to stderr, obtained
18       from  the  explain_adjtime(3) function, and then the process terminates
19       by calling exit(EXIT_FAILURE).
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21       The explain_adjtime_on_error function is used to  call  the  adjtime(2)
22       system  call.  On  failure  an  explanation  will be printed to stderr,
23       obtained from the explain_adjtime(3) function, but still returns to the
24       caller.
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26       delta   The  delta,  exactly  as  to be passed to the adjtime(2) system
27               call.
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29       olddelta
30               The olddelta, exactly as to be passed to the adjtime(2)  system
31               call.
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RETURN VALUE

34       The  explain_adjtime_or_die  function only returns on success, see adj‐
35       time(2) for more information. On failure,  prints  an  explanation  and
36       exits, it does not return.
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38       The  explain_adjtime_on_error  function always returns the value return
39       by the wrapped adjtime(2) system call.
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EXAMPLE

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

47       adjtime(2)
48               smoothly tune kernel clock
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50       explain_adjtime(3)
51               explain adjtime(2) errors
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53       exit(2) terminate the calling process
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56       libexplain version 1.4
57       Copyright (C) 2009 Peter Miller
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61                                                     explain_adjtime_or_die(3)
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