]> CyberLeo.Net >> Repos - FreeBSD/releng/10.0.git/blob - contrib/ntp/include/ntp_syscall.h
- Copy stable/10 (r259064) to releng/10.0 as part of the
[FreeBSD/releng/10.0.git] / contrib / ntp / include / ntp_syscall.h
1 /*
2  * ntp_syscall.h - various ways to perform the ntp_adjtime() and ntp_gettime()
3  *                 system calls.
4  */
5
6 #ifndef NTP_SYSCALL_H
7 #define NTP_SYSCALL_H
8
9 #ifdef HAVE_CONFIG_H
10 #include <config.h>
11 #endif
12
13 #ifdef HAVE_SYS_TIMEX_H
14 # include <sys/timex.h>
15 #endif
16
17 #ifndef NTP_SYSCALLS_LIBC
18 #ifdef NTP_SYSCALLS_STD
19 # define ntp_adjtime(t)         syscall(SYS_ntp_adjtime, (t))
20 # define ntp_gettime(t)         syscall(SYS_ntp_gettime, (t))
21 #else /* !NTP_SYSCALLS_STD */
22 # ifdef HAVE___ADJTIMEX
23 extern  int     __adjtimex      P((struct timex *));
24
25 #  define ntp_adjtime(t)        __adjtimex((t))
26
27 static inline int
28 ntp_gettime(
29         struct ntptimeval *ntv
30         )
31 {
32         struct timex tntx;
33         int result;
34
35         tntx.modes = 0;
36         result = __adjtimex (&tntx);
37         ntv->time = tntx.time;
38         ntv->maxerror = tntx.maxerror;
39         ntv->esterror = tntx.esterror;
40 #ifdef NTP_API
41 # if NTP_API > 3
42         ntv->tai = tntx.tai;
43 # endif
44 #endif
45         return(result);
46 }
47 # else /* !HAVE__ADJTIMEX */
48 #  ifdef HAVE___NTP_GETTIME
49 #   define ntp_gettime(t)       __ntp_gettime((t))
50 #  endif
51 # endif /* !HAVE_ADJTIMEX */
52 #endif /* !NTP_SYSCALLS_STD */
53 #endif /* !NTP_SYSCALLS_LIBC */
54
55 #endif /* NTP_SYSCALL_H */