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The introduced glibc's 'internal' struct __timex64 is a copy of Linux kernel's struct __kernel_timex (v5.6) introduced for properly handling data for clock_adjtime64 syscall. As the struct's __kernel_timex size is the same as for archs with __WORDSIZE == 64, proper padding and data types conversion (i.e. long to long long) had to be added for architectures with __WORDSIZE == 32 && __TIMESIZE != 64. Moreover, it stores time in struct __timeval64 rather than struct timeval, which makes it Y2038-proof. Build tests: ./src/scripts/build-many-glibcs.py glibcs Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/* Internal declarations for sys/timex.h.
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Copyright (C) 2014-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _INCLUDE_SYS_TIMEX_H
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#define _INCLUDE_SYS_TIMEX_H 1
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#include_next <sys/timex.h>
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# ifndef _ISOMAC
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libc_hidden_proto (__adjtimex)
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# include <struct___timeval64.h>
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/* Local definition of 64 bit time supporting timex struct */
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# if __TIMESIZE == 64
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# define __timex64 timex
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# else
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struct __timex64
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{
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unsigned int modes; /* mode selector */
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int :32; /* pad */
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long long int offset; /* time offset (usec) */
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long long int freq; /* frequency offset (scaled ppm) */
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long long int maxerror; /* maximum error (usec) */
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long long int esterror; /* estimated error (usec) */
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int status; /* clock command/status */
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int :32; /* pad */
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long long int constant; /* pll time constant */
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long long int precision; /* clock precision (usec) (read only) */
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long long int tolerance; /* clock frequency tolerance (ppm) (ro) */
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struct __timeval64 time; /* (read only, except for ADJ_SETOFFSET) */
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long long int tick; /* (modified) usecs between clock ticks */
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long long int ppsfreq; /* pps frequency (scaled ppm) (ro) */
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long long int jitter; /* pps jitter (us) (ro) */
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int shift; /* interval duration (s) (shift) (ro) */
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int :32; /* pad */
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long long int stabil; /* pps stability (scaled ppm) (ro) */
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long long int jitcnt; /* jitter limit exceeded (ro) */
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long long int calcnt; /* calibration intervals (ro) */
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long long int errcnt; /* calibration errors (ro) */
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long long int stbcnt; /* stability limit exceeded (ro) */
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int tai; /* TAI offset (ro) */
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int :32;
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int :32;
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int :32;
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int :32;
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int :32;
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int :32;
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int :32;
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int :32;
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int :32;
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int :32;
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int :32;
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};
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# endif
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# endif /* _ISOMAC */
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#endif /* sys/timex.h */
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