sysdeps/unix/sysv/linux/bits/timex.h

   1 /* Copyright (C) 1995-2024 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
  26 struct 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 */