1/* Copyright (C) 1995-2026 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 <https://www.gnu.org/licenses/>. */
17
18#ifndef _BITS_TIMEX_H
19#define _BITS_TIMEX_H 1
20
21#include <bits/types.h>
22#include <bits/types/struct_timeval.h>
23
24/* These definitions from linux/timex.h as of 3.18. */
25
26struct timex
27{
28# if defined __USE_TIME64_REDIRECTS || (__TIMESIZE == 64 && __WORDSIZE == 32)
29 unsigned int modes; /* mode selector */
30 int :32; /* pad */
31 long long offset; /* time offset (usec) */
32 long long freq; /* frequency offset (scaled ppm) */
33 long long maxerror; /* maximum error (usec) */
34 long long esterror; /* estimated error (usec) */
35 int status; /* clock command/status */
36 int :32; /* pad */
37 long long constant; /* pll time constant */
38 long long precision; /* clock precision (usec) (read only) */
39 long long tolerance; /* clock frequency tolerance (ppm) (ro) */
40 struct timeval time; /* (read only, except for ADJ_SETOFFSET) */
41 long long tick; /* (modified) usecs between clock ticks */
42 long long ppsfreq; /* pps frequency (scaled ppm) (ro) */
43 long long jitter; /* pps jitter (us) (ro) */
44 int shift; /* interval duration (s) (shift) (ro) */
45 int :32; /* pad */
46 long long stabil; /* pps stability (scaled ppm) (ro) */
47 long long jitcnt; /* jitter limit exceeded (ro) */
48 long long calcnt; /* calibration intervals (ro) */
49 long long errcnt; /* calibration errors (ro) */
50 long long stbcnt; /* stability limit exceeded (ro) */
51
52 int tai; /* TAI offset (ro) */
53
54 int :32; int :32; int :32; int :32;
55 int :32; int :32; int :32; int :32;
56 int :32; int :32; int :32;
57# else
58 unsigned int modes; /* mode selector */
59 __syscall_slong_t offset; /* time offset (usec) */
60 __syscall_slong_t freq; /* frequency offset (scaled ppm) */
61 __syscall_slong_t maxerror; /* maximum error (usec) */
62 __syscall_slong_t esterror; /* estimated error (usec) */
63 int status; /* clock command/status */
64 __syscall_slong_t constant; /* pll time constant */
65 __syscall_slong_t precision; /* clock precision (usec) (ro) */
66 __syscall_slong_t tolerance; /* clock frequency tolerance (ppm) (ro) */
67 struct timeval time; /* (read only, except for ADJ_SETOFFSET) */
68 __syscall_slong_t tick; /* (modified) usecs between clock ticks */
69 __syscall_slong_t ppsfreq; /* pps frequency (scaled ppm) (ro) */
70 __syscall_slong_t jitter; /* pps jitter (us) (ro) */
71 int shift; /* interval duration (s) (shift) (ro) */
72 __syscall_slong_t stabil; /* pps stability (scaled ppm) (ro) */
73 __syscall_slong_t jitcnt; /* jitter limit exceeded (ro) */
74 __syscall_slong_t calcnt; /* calibration intervals (ro) */
75 __syscall_slong_t errcnt; /* calibration errors (ro) */
76 __syscall_slong_t stbcnt; /* stability limit exceeded (ro) */
77
78 int tai; /* TAI offset (ro) */
79
80 /* ??? */
81 int :32; int :32; int :32; int :32;
82 int :32; int :32; int :32; int :32;
83 int :32; int :32; int :32;
84# endif
85};
86
87/* Mode codes (timex.mode) */
88#define ADJ_OFFSET 0x0001 /* time offset */
89#define ADJ_FREQUENCY 0x0002 /* frequency offset */
90#define ADJ_MAXERROR 0x0004 /* maximum time error */
91#define ADJ_ESTERROR 0x0008 /* estimated time error */
92#define ADJ_STATUS 0x0010 /* clock status */
93#define ADJ_TIMECONST 0x0020 /* pll time constant */
94#define ADJ_TAI 0x0080 /* set TAI offset */
95#define ADJ_SETOFFSET 0x0100 /* add 'time' to current time */
96#define ADJ_MICRO 0x1000 /* select microsecond resolution */
97#define ADJ_NANO 0x2000 /* select nanosecond resolution */
98#define ADJ_TICK 0x4000 /* tick value */
99#define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */
100#define ADJ_OFFSET_SS_READ 0xa001 /* read-only adjtime */
101
102/* xntp 3.4 compatibility names */
103#define MOD_OFFSET ADJ_OFFSET
104#define MOD_FREQUENCY ADJ_FREQUENCY
105#define MOD_MAXERROR ADJ_MAXERROR
106#define MOD_ESTERROR ADJ_ESTERROR
107#define MOD_STATUS ADJ_STATUS
108#define MOD_TIMECONST ADJ_TIMECONST
109#define MOD_CLKB ADJ_TICK
110#define MOD_CLKA ADJ_OFFSET_SINGLESHOT /* 0x8000 in original */
111#define MOD_TAI ADJ_TAI
112#define MOD_MICRO ADJ_MICRO
113#define MOD_NANO ADJ_NANO
114
115
116/* Status codes (timex.status) */
117#define STA_PLL 0x0001 /* enable PLL updates (rw) */
118#define STA_PPSFREQ 0x0002 /* enable PPS freq discipline (rw) */
119#define STA_PPSTIME 0x0004 /* enable PPS time discipline (rw) */
120#define STA_FLL 0x0008 /* select frequency-lock mode (rw) */
121
122#define STA_INS 0x0010 /* insert leap (rw) */
123#define STA_DEL 0x0020 /* delete leap (rw) */
124#define STA_UNSYNC 0x0040 /* clock unsynchronized (rw) */
125#define STA_FREQHOLD 0x0080 /* hold frequency (rw) */
126
127#define STA_PPSSIGNAL 0x0100 /* PPS signal present (ro) */
128#define STA_PPSJITTER 0x0200 /* PPS signal jitter exceeded (ro) */
129#define STA_PPSWANDER 0x0400 /* PPS signal wander exceeded (ro) */
130#define STA_PPSERROR 0x0800 /* PPS signal calibration error (ro) */
131
132#define STA_CLOCKERR 0x1000 /* clock hardware fault (ro) */
133#define STA_NANO 0x2000 /* resolution (0 = us, 1 = ns) (ro) */
134#define STA_MODE 0x4000 /* mode (0 = PLL, 1 = FLL) (ro) */
135#define STA_CLK 0x8000 /* clock source (0 = A, 1 = B) (ro) */
136
137/* Read-only bits */
138#define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER \
139 | STA_PPSERROR | STA_CLOCKERR | STA_NANO | STA_MODE | STA_CLK)
140
141#endif /* bits/timex.h */