sysdeps/unix/sysv/linux/sys/timex.h

   1 /* Copyright (C) 1995-1997,1999,2007,2009,2011 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #ifndef _SYS_TIMEX_H
  20 #define _SYS_TIMEX_H    1
  21
  22 #include <features.h>
  23 #include <sys/time.h>
  24
  25 /* These definitions from linux/timex.h as of 2.6.30.  */
  26
  27 #include <bits/timex.h>
  28
  29 #define NTP_API 4       /* NTP API version */
  30
  31 struct ntptimeval
  32 {
  33   struct timeval time;  /* current time (ro) */
  34   long int maxerror;    /* maximum error (us) (ro) */
  35   long int esterror;    /* estimated error (us) (ro) */
  36   long int tai;         /* TAI offset (ro) */
  37
  38   long int __unused1;
  39   long int __unused2;
  40   long int __unused3;
  41   long int __unused4;
  42 };
  43
  44 /* Clock states (time_state) */
  45 #define TIME_OK         0       /* clock synchronized, no leap second */
  46 #define TIME_INS        1       /* insert leap second */
  47 #define TIME_DEL        2       /* delete leap second */
  48 #define TIME_OOP        3       /* leap second in progress */
  49 #define TIME_WAIT       4       /* leap second has occurred */
  50 #define TIME_ERROR      5       /* clock not synchronized */
  51 #define TIME_BAD        TIME_ERROR /* bw compat */
  52
  53 /* Maximum time constant of the PLL.  */
  54 #define MAXTC           6
  55
  56 __BEGIN_DECLS
  57
  58 extern int __adjtimex (struct timex *__ntx) __THROW;
  59 extern int adjtimex (struct timex *__ntx) __THROW;
  60
  61 #ifdef __REDIRECT_NTH
  62 extern int __REDIRECT_NTH (ntp_gettime, (struct ntptimeval *__ntv),
  63                            ntp_gettimex);
  64 #else
  65 extern int ntp_gettimex (struct ntptimeval *__ntv) __THROW;
  66 # define ntp_gettime ntp_gettimex
  67 #endif
  68 extern int ntp_adjtime (struct timex *__tntx) __THROW;
  69
  70 __END_DECLS
  71
  72 #endif /* sys/timex.h */