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lh9ed821d2023-04-07 01:36:19 -07001/* 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, 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 2.2.0. */
26
27struct ntptimeval
28{
29 struct timeval time; /* current time (ro) */
30 long int maxerror; /* maximum error (us) (ro) */
31 long int esterror; /* estimated error (us) (ro) */
32};
33
34struct 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
48 long int ppsfreq; /* pps frequency (scaled ppm) (ro) */
49 long int jitter; /* pps jitter (us) (ro) */
50 int shift; /* interval duration (s) (shift) (ro) */
51 long int stabil; /* pps stability (scaled ppm) (ro) */
52 long int jitcnt; /* jitter limit exceeded (ro) */
53 long int calcnt; /* calibration intervals (ro) */
54 long int errcnt; /* calibration errors (ro) */
55 long int stbcnt; /* stability limit exceeded (ro) */
56
57 /* ??? */
58 int :32; int :32; int :32; int :32;
59 int :32; int :32; int :32; int :32;
60 int :32; int :32; int :32; int :32;
61};
62
63/* Mode codes (timex.mode) */
64#define ADJ_OFFSET 0x0001 /* time offset */
65#define ADJ_FREQUENCY 0x0002 /* frequency offset */
66#define ADJ_MAXERROR 0x0004 /* maximum time error */
67#define ADJ_ESTERROR 0x0008 /* estimated time error */
68#define ADJ_STATUS 0x0010 /* clock status */
69#define ADJ_TIMECONST 0x0020 /* pll time constant */
70#define ADJ_TICK 0x4000 /* tick value */
71#define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */
72
73/* xntp 3.4 compatibility names */
74#define MOD_OFFSET ADJ_OFFSET
75#define MOD_FREQUENCY ADJ_FREQUENCY
76#define MOD_MAXERROR ADJ_MAXERROR
77#define MOD_ESTERROR ADJ_ESTERROR
78#define MOD_STATUS ADJ_STATUS
79#define MOD_TIMECONST ADJ_TIMECONST
80#define MOD_CLKB ADJ_TICK
81#define MOD_CLKA ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */
82
83
84/* Status codes (timex.status) */
85#define STA_PLL 0x0001 /* enable PLL updates (rw) */
86#define STA_PPSFREQ 0x0002 /* enable PPS freq discipline (rw) */
87#define STA_PPSTIME 0x0004 /* enable PPS time discipline (rw) */
88#define STA_FLL 0x0008 /* select frequency-lock mode (rw) */
89
90#define STA_INS 0x0010 /* insert leap (rw) */
91#define STA_DEL 0x0020 /* delete leap (rw) */
92#define STA_UNSYNC 0x0040 /* clock unsynchronized (rw) */
93#define STA_FREQHOLD 0x0080 /* hold frequency (rw) */
94
95#define STA_PPSSIGNAL 0x0100 /* PPS signal present (ro) */
96#define STA_PPSJITTER 0x0200 /* PPS signal jitter exceeded (ro) */
97#define STA_PPSWANDER 0x0400 /* PPS signal wander exceeded (ro) */
98#define STA_PPSERROR 0x0800 /* PPS signal calibration error (ro) */
99
100#define STA_CLOCKERR 0x1000 /* clock hardware fault (ro) */
101
102#define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
103 STA_PPSERROR | STA_CLOCKERR) /* read-only bits */
104
105/* Clock states (time_state) */
106#define TIME_OK 0 /* clock synchronized, no leap second */
107#define TIME_INS 1 /* insert leap second */
108#define TIME_DEL 2 /* delete leap second */
109#define TIME_OOP 3 /* leap second in progress */
110#define TIME_WAIT 4 /* leap second has occurred */
111#define TIME_ERROR 5 /* clock not synchronized */
112#define TIME_BAD TIME_ERROR /* bw compat */
113
114/* Maximum time constant of the PLL. */
115#define MAXTC 6
116
117__BEGIN_DECLS
118
119#if 0
120extern int __adjtimex (struct timex *__ntx) __THROW;
121#endif
122extern int adjtimex (struct timex *__ntx) __THROW;
123libc_hidden_proto(adjtimex)
124
125#if defined __UCLIBC_NTP_LEGACY__
126extern int ntp_gettime (struct ntptimeval *__ntv) __THROW;
127extern int ntp_adjtime (struct timex *__tntx) __THROW;
128#endif
129
130__END_DECLS
131
132#endif /* sys/timex.h */