1 /* Copyright (C) 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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/>. */
19 #define _SYS_TIMEX_H 1
24 /* These definitions from linux/timex.h as of 2.2.0. */
28 struct timeval time; /* current time (ro) */
29 long int maxerror; /* maximum error (us) (ro) */
30 long int esterror; /* estimated error (us) (ro) */
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 */
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) */
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;
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 */
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 */
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) */
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) */
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) */
99 #define STA_CLOCKERR 0x1000 /* clock hardware fault (ro) */
101 #define STA_RONLY (STA_PPSSIGNAL | STA_PPSJITTER | STA_PPSWANDER | \
102 STA_PPSERROR | STA_CLOCKERR) /* read-only bits */
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 */
113 /* Maximum time constant of the PLL. */
119 extern int __adjtimex (struct timex *__ntx) __THROW;
121 extern int adjtimex (struct timex *__ntx) __THROW;
122 libc_hidden_proto(adjtimex)
124 #if defined __UCLIBC_NTP_LEGACY__
125 extern int ntp_gettime (struct ntptimeval *__ntv) __THROW;
126 extern int ntp_adjtime (struct timex *__tntx) __THROW;
131 #endif /* sys/timex.h */