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ntp 4.2.6p5

    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	(struct timex *);
   24: 
   25: #  define ntp_adjtime(t)	__adjtimex((t))
   26: 
   27: #ifndef HAVE_STRUCT_NTPTIMEVAL
   28: struct ntptimeval
   29: {
   30:   struct timeval time;  /* current time (ro) */
   31:   long int maxerror;    /* maximum error (us) (ro) */
   32:   long int esterror;    /* estimated error (us) (ro) */
   33: };
   34: #endif
   35: 
   36: static inline int
   37: ntp_gettime(
   38: 	struct ntptimeval *ntv
   39: 	)
   40: {
   41: 	struct timex tntx;
   42: 	int result;
   43: 
   44: 	tntx.modes = 0;
   45: 	result = __adjtimex (&tntx);
   46: 	ntv->time = tntx.time;
   47: 	ntv->maxerror = tntx.maxerror;
   48: 	ntv->esterror = tntx.esterror;
   49: #ifdef NTP_API
   50: # if NTP_API > 3
   51: 	ntv->tai = tntx.tai;
   52: # endif
   53: #endif
   54: 	return(result);
   55: }
   56: # else /* !HAVE__ADJTIMEX */
   57: #  ifdef HAVE___NTP_GETTIME
   58: #   define ntp_gettime(t)	__ntp_gettime((t))
   59: #  endif
   60: # endif /* !HAVE_ADJTIMEX */
   61: #endif /* !NTP_SYSCALLS_STD */
   62: #endif /* !NTP_SYSCALLS_LIBC */
   63: 
   64: #endif /* NTP_SYSCALL_H */