1 /* Copyright (C) 1995, 1996, 1997, 1999 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, see 16 <http://www.gnu.org/licenses/>. */ 17 18 #ifndef _SYS_TIMEX_H 19 #define _SYS_TIMEX_H 1 20 21 #include <features.h> 22 #include <sys/time.h> 23 24 /* These definitions from linux/timex.h as of 2.2.0. */ 25 26 struct ntptimeval 27 { 28 struct timeval time; /* current time (ro) */ 29 long int maxerror; /* maximum error (us) (ro) */ 30 long int esterror; /* estimated error (us) (ro) */ 31 }; 32 33 struct timex 34 { 35 unsigned int modes; /* mode selector */ 36 long int offset; /* time offset (usec) */ 37 long int freq; /* frequency offset (scaled ppm) */ 38 long int maxerror; /* maximum error (usec) */ 39 long int esterror; /* estimated error (usec) */ 40 int status; /* clock command/status */ 41 long int constant; /* pll time constant */ 42 long int precision; /* clock precision (usec) (read only) */ 43 long int tolerance; /* clock frequency tolerance (ppm) (read only) */ 44 struct timeval time; /* (read only) */ 45 long int tick; /* (modified) usecs between clock ticks */ 46 47 long int ppsfreq; /* pps frequency (scaled ppm) (ro) */ 48 long int jitter; /* pps jitter (us) (ro) */ 49 int shift; /* interval duration (s) (shift) (ro) */ 50 long int stabil; /* pps stability (scaled ppm) (ro) */ 51 long int jitcnt; /* jitter limit exceeded (ro) */ 52 long int calcnt; /* calibration intervals (ro) */ 53 long int errcnt; /* calibration errors (ro) */ 54 long int stbcnt; /* stability limit exceeded (ro) */ 55 56 /* ??? */ 57 int :32; int :32; int :32; int :32; 58 int :32; int :32; int :32; int :32; 59 int :32; int :32; int :32; int :32; 60 }; 61 62 /* Mode codes (timex.mode) */ 63 #define ADJ_OFFSET 0x0001 /* time offset */ 64 #define ADJ_FREQUENCY 0x0002 /* frequency offset */ 65 #define ADJ_MAXERROR 0x0004 /* maximum time error */ 66 #define ADJ_ESTERROR 0x0008 /* estimated time error */ 67 #define ADJ_STATUS 0x0010 /* clock status */ 68 #define ADJ_TIMECONST 0x0020 /* pll time constant */ 69 #define ADJ_TICK 0x4000 /* tick value */ 70 #define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */ 71 72 /* xntp 3.4 compatibility names */ 73 #define MOD_OFFSET ADJ_OFFSET 74 #define MOD_FREQUENCY ADJ_FREQUENCY 75 #define MOD_MAXERROR ADJ_MAXERROR 76 #define MOD_ESTERROR ADJ_ESTERROR 77 #define MOD_STATUS ADJ_STATUS 78 #define MOD_TIMECONST ADJ_TIMECONST 79 #define MOD_CLKB ADJ_TICK 80 #define MOD_CLKA ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */ 81 82 83 /* Status codes (timex.status) */ 84 #define STA_PLL 0x0001 /* enable PLL updates (rw) */ 85 #define STA_PPSFREQ 0x0002 /* enable PPS freq discipline (rw) */ 86 #define STA_PPSTIME 0x0004 /* enable PPS time discipline (rw) */ 87 #define STA_FLL 0x0008 /* select frequency-lock mode (rw) */ 88 89 #define STA_INS 0x0010 /* insert leap (rw) */ 90 #define STA_DEL 0x0020 /* delete leap (rw) */ 91 #define STA_UNSYNC 0x0040 /* clock unsynchronized (rw) */ 92 #define STA_FREQHOLD 0x0080 /* hold frequency (rw) */ 93 94 #define STA_PPSSIGNAL 0x0100 /* PPS signal present (ro) */ 95 #define STA_PPSJITTER 0x0200 /* PPS signal jitter exceeded (ro) */ 96 #define STA_PPSWANDER 0x0400 /* PPS signal wander exceeded (ro) */ 97 #define STA_PPSERROR 0x0800 /* PPS signal calibration error (ro) */ 98 99 #define STA_CLOCKERR 0x1000 /* clock hardware fault (ro) */ 100 101 #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \ 102 STA_PPSERROR | STA_CLOCKERR) /* read-only bits */ 103 104 /* Clock states (time_state) */ 105 #define TIME_OK 0 /* clock synchronized, no leap second */ 106 #define TIME_INS 1 /* insert leap second */ 107 #define TIME_DEL 2 /* delete leap second */ 108 #define TIME_OOP 3 /* leap second in progress */ 109 #define TIME_WAIT 4 /* leap second has occurred */ 110 #define TIME_ERROR 5 /* clock not synchronized */ 111 #define TIME_BAD TIME_ERROR /* bw compat */ 112 113 /* Maximum time constant of the PLL. */ 114 #define MAXTC 6 115 116 __BEGIN_DECLS 117 118 #if 0 119 extern int __adjtimex (struct timex *__ntx) __THROW; 120 #endif 121 extern int adjtimex (struct timex *__ntx) __THROW; 122 libc_hidden_proto(adjtimex) 123 124 #if defined __UCLIBC_NTP_LEGACY__ 125 extern int ntp_gettime (struct ntptimeval *__ntv) __THROW; 126 extern int ntp_adjtime (struct timex *__tntx) __THROW; 127 #endif 128 129 __END_DECLS 130 131 #endif /* sys/timex.h */ 132