1 /* Copyright (C) 1995-2017 Free Software Foundation, Inc. 2 3 The GNU C Library is free software; you can redistribute it and/or 4 modify it under the terms of the GNU Lesser General Public 5 License as published by the Free Software Foundation; either 6 version 2.1 of the License, or (at your option) any later version. 7 8 The GNU C Library is distributed in the hope that it will be useful, 9 but WITHOUT ANY WARRANTY; without even the implied warranty of 10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 Lesser General Public License for more details. 12 13 You should have received a copy of the GNU Lesser General Public 14 License along with the GNU C Library; if not, see 15 <http://www.gnu.org/licenses/>. */ 16 17 #ifndef _SYS_TIMEX_H 18 #define _SYS_TIMEX_H 1 19 20 #include <features.h> 21 #include <sys/time.h> 22 #include <time.h> 23 24 /* These definitions from linux/timex.h as of 3.18. */ 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 long int tai; /* TAI offset (ro) */ 32 }; 33 34 struct timex 35 { 36 unsigned int modes; /* mode selector */ 37 long int offset; /* time offset (usec) */ 38 long int freq; /* frequency offset (scaled ppm) */ 39 long int maxerror; /* maximum error (usec) */ 40 long int esterror; /* estimated error (usec) */ 41 int status; /* clock command/status */ 42 long int constant; /* pll time constant */ 43 long int precision; /* clock precision (usec) (read only) */ 44 long int tolerance; /* clock frequency tolerance (ppm) (read only) */ 45 struct timeval time; /* (read only) */ 46 long int tick; /* (modified) usecs between clock ticks */ 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 int tai; /* TAI offset (ro) */ 57 58 /* ??? */ 59 int :32; int :32; int :32; int :32; 60 int :32; int :32; int :32; int :32; 61 int :32; int :32; int :32; int :32; 62 }; 63 64 /* Mode codes (timex.mode) */ 65 #define ADJ_OFFSET 0x0001 /* time offset */ 66 #define ADJ_FREQUENCY 0x0002 /* frequency offset */ 67 #define ADJ_MAXERROR 0x0004 /* maximum time error */ 68 #define ADJ_ESTERROR 0x0008 /* estimated time error */ 69 #define ADJ_STATUS 0x0010 /* clock status */ 70 #define ADJ_TIMECONST 0x0020 /* pll time constant */ 71 #define ADJ_TAI 0x0080 /* set TAI offset */ 72 #define ADJ_MICRO 0x1000 /* select microsecond resolution */ 73 #define ADJ_NANO 0x2000 /* select nanosecond resolution */ 74 #define ADJ_TICK 0x4000 /* tick value */ 75 #define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */ 76 #define ADJ_OFFSET_SS_READ 0xa001 /* read-only adjtime */ 77 78 /* xntp 3.4 compatibility names */ 79 #define MOD_OFFSET ADJ_OFFSET 80 #define MOD_FREQUENCY ADJ_FREQUENCY 81 #define MOD_MAXERROR ADJ_MAXERROR 82 #define MOD_ESTERROR ADJ_ESTERROR 83 #define MOD_STATUS ADJ_STATUS 84 #define MOD_TIMECONST ADJ_TIMECONST 85 #define MOD_CLKB ADJ_TICK 86 #define MOD_CLKA ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */ 87 #define MOD_TAI ADJ_TAI 88 #define MOD_MICRO ADJ_MICRO 89 #define MOD_NANO ADJ_NANO 90 91 92 /* Status codes (timex.status) */ 93 #define STA_PLL 0x0001 /* enable PLL updates (rw) */ 94 #define STA_PPSFREQ 0x0002 /* enable PPS freq discipline (rw) */ 95 #define STA_PPSTIME 0x0004 /* enable PPS time discipline (rw) */ 96 #define STA_FLL 0x0008 /* select frequency-lock mode (rw) */ 97 98 #define STA_INS 0x0010 /* insert leap (rw) */ 99 #define STA_DEL 0x0020 /* delete leap (rw) */ 100 #define STA_UNSYNC 0x0040 /* clock unsynchronized (rw) */ 101 #define STA_FREQHOLD 0x0080 /* hold frequency (rw) */ 102 103 #define STA_PPSSIGNAL 0x0100 /* PPS signal present (ro) */ 104 #define STA_PPSJITTER 0x0200 /* PPS signal jitter exceeded (ro) */ 105 #define STA_PPSWANDER 0x0400 /* PPS signal wander exceeded (ro) */ 106 #define STA_PPSERROR 0x0800 /* PPS signal calibration error (ro) */ 107 108 #define STA_CLOCKERR 0x1000 /* clock hardware fault (ro) */ 109 #define STA_NANO 0x2000 /* resolution (0 = us, 1 = ns) (ro) */ 110 #define STA_MODE 0x4000 /* mode (0 = PLL, 1 = FLL) (ro) */ 111 #define STA_CLK 0x8000 /* clock source (0 = A, 1 = B) (ro) */ 112 113 #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \ 114 STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK) 115 116 /* Clock states (time_state) */ 117 #define TIME_OK 0 /* clock synchronized, no leap second */ 118 #define TIME_INS 1 /* insert leap second */ 119 #define TIME_DEL 2 /* delete leap second */ 120 #define TIME_OOP 3 /* leap second in progress */ 121 #define TIME_WAIT 4 /* leap second has occurred */ 122 #define TIME_ERROR 5 /* clock not synchronized */ 123 #define TIME_BAD TIME_ERROR /* bw compat */ 124 125 /* Maximum time constant of the PLL. */ 126 #define MAXTC 6 127 128 __BEGIN_DECLS 129 130 extern int __adjtimex (struct timex *__ntx) __THROW; 131 extern int adjtimex (struct timex *__ntx) __THROW; 132 libc_hidden_proto(adjtimex) 133 134 #if defined __UCLIBC_NTP_LEGACY__ 135 extern int ntp_gettime (struct ntptimeval *__ntv) __THROW; 136 extern int ntp_adjtime (struct timex *__tntx) __THROW; 137 #endif 138 #if defined __UCLIBC_HAS_REALTIME__ 139 extern int clock_adjtime (clockid_t __clock_id, struct timex *__ntx) __THROW; 140 #endif 141 __END_DECLS 142 143 #endif /* sys/timex.h */ 144