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-rw-r--r--cross/lib/stat-time.h251
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diff --git a/cross/lib/stat-time.h b/cross/lib/stat-time.h
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-/* stat-related time functions.
-
- Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
-
- This file is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- This file is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <https://www.gnu.org/licenses/>. */
-
-/* Written by Paul Eggert. */
-
-#ifndef STAT_TIME_H
-#define STAT_TIME_H 1
-
-#include <errno.h>
-#include <stdckdint.h>
-#include <stddef.h>
-#include <sys/stat.h>
-#include <time.h>
-
-#ifndef _GL_INLINE_HEADER_BEGIN
- #error "Please include config.h first."
-#endif
-_GL_INLINE_HEADER_BEGIN
-#ifndef _GL_STAT_TIME_INLINE
-# define _GL_STAT_TIME_INLINE _GL_INLINE
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* STAT_TIMESPEC (ST, ST_XTIM) is the ST_XTIM member for *ST of type
- struct timespec, if available. If not, then STAT_TIMESPEC_NS (ST,
- ST_XTIM) is the nanosecond component of the ST_XTIM member for *ST,
- if available. ST_XTIM can be st_atim, st_ctim, st_mtim, or st_birthtim
- for access, status change, data modification, or birth (creation)
- time respectively.
-
- These macros are private to stat-time.h. */
-#if _GL_WINDOWS_STAT_TIMESPEC || defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
-# if _GL_WINDOWS_STAT_TIMESPEC || defined TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC
-# define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim)
-# else
-# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.tv_nsec)
-# endif
-#elif defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
-# define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim##espec)
-#elif defined HAVE_STRUCT_STAT_ST_ATIMENSEC
-# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim##ensec)
-#elif defined HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC
-# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.st__tim.tv_nsec)
-#endif
-
-/* Return the nanosecond component of *ST's access time. */
-_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
-get_stat_atime_ns (struct stat const *st)
-{
-# if defined STAT_TIMESPEC
- return STAT_TIMESPEC (st, st_atim).tv_nsec;
-# elif defined STAT_TIMESPEC_NS
- return STAT_TIMESPEC_NS (st, st_atim);
-# else
- return 0;
-# endif
-}
-
-/* Return the nanosecond component of *ST's status change time. */
-_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
-get_stat_ctime_ns (struct stat const *st)
-{
-# if defined STAT_TIMESPEC
- return STAT_TIMESPEC (st, st_ctim).tv_nsec;
-# elif defined STAT_TIMESPEC_NS
- return STAT_TIMESPEC_NS (st, st_ctim);
-# else
- return 0;
-# endif
-}
-
-/* Return the nanosecond component of *ST's data modification time. */
-_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
-get_stat_mtime_ns (struct stat const *st)
-{
-# if defined STAT_TIMESPEC
- return STAT_TIMESPEC (st, st_mtim).tv_nsec;
-# elif defined STAT_TIMESPEC_NS
- return STAT_TIMESPEC_NS (st, st_mtim);
-# else
- return 0;
-# endif
-}
-
-/* Return the nanosecond component of *ST's birth time. */
-_GL_STAT_TIME_INLINE long int _GL_ATTRIBUTE_PURE
-get_stat_birthtime_ns (_GL_UNUSED struct stat const *st)
-{
-# if defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
- return STAT_TIMESPEC (st, st_birthtim).tv_nsec;
-# elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
- return STAT_TIMESPEC_NS (st, st_birthtim);
-# else
- return 0;
-# endif
-}
-
-/* Return *ST's access time. */
-_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
-get_stat_atime (struct stat const *st)
-{
-#ifdef STAT_TIMESPEC
- return STAT_TIMESPEC (st, st_atim);
-#else
- struct timespec t;
- t.tv_sec = st->st_atime;
- t.tv_nsec = get_stat_atime_ns (st);
- return t;
-#endif
-}
-
-/* Return *ST's status change time. */
-_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
-get_stat_ctime (struct stat const *st)
-{
-#ifdef STAT_TIMESPEC
- return STAT_TIMESPEC (st, st_ctim);
-#else
- struct timespec t;
- t.tv_sec = st->st_ctime;
- t.tv_nsec = get_stat_ctime_ns (st);
- return t;
-#endif
-}
-
-/* Return *ST's data modification time. */
-_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
-get_stat_mtime (struct stat const *st)
-{
-#ifdef STAT_TIMESPEC
- return STAT_TIMESPEC (st, st_mtim);
-#else
- struct timespec t;
- t.tv_sec = st->st_mtime;
- t.tv_nsec = get_stat_mtime_ns (st);
- return t;
-#endif
-}
-
-/* Return *ST's birth time, if available; otherwise return a value
- with tv_sec and tv_nsec both equal to -1. */
-_GL_STAT_TIME_INLINE struct timespec _GL_ATTRIBUTE_PURE
-get_stat_birthtime (_GL_UNUSED struct stat const *st)
-{
- struct timespec t;
-
-#if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \
- || defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC)
- t = STAT_TIMESPEC (st, st_birthtim);
-#elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
- t.tv_sec = st->st_birthtime;
- t.tv_nsec = st->st_birthtimensec;
-#elif defined _WIN32 && ! defined __CYGWIN__
- /* Native Windows platforms (but not Cygwin) put the "file creation
- time" in st_ctime (!). See
- <https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/stat-functions>. */
-# if _GL_WINDOWS_STAT_TIMESPEC
- t = st->st_ctim;
-# else
- t.tv_sec = st->st_ctime;
- t.tv_nsec = 0;
-# endif
-#else
- /* Birth time is not supported. */
- t.tv_sec = -1;
- t.tv_nsec = -1;
-#endif
-
-#if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \
- || defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC \
- || defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
- /* FreeBSD and NetBSD sometimes signal the absence of knowledge by
- using zero. Attempt to work around this problem. Alas, this can
- report failure even for valid timestamps. Also, NetBSD
- sometimes returns junk in the birth time fields; work around this
- bug if it is detected. */
- if (! (t.tv_sec && 0 <= t.tv_nsec && t.tv_nsec < 1000000000))
- {
- t.tv_sec = -1;
- t.tv_nsec = -1;
- }
-#endif
-
- return t;
-}
-
-/* If a stat-like function returned RESULT, normalize the timestamps
- in *ST, in case this platform suffers from the Solaris 11 bug where
- tv_nsec might be negative. Return the adjusted RESULT, setting
- errno to EOVERFLOW if normalization overflowed. This function
- is intended to be private to this .h file. */
-_GL_STAT_TIME_INLINE int
-stat_time_normalize (int result, _GL_UNUSED struct stat *st)
-{
-#if defined __sun && defined STAT_TIMESPEC
- if (result == 0)
- {
- long int timespec_hz = 1000000000;
- short int const ts_off[] = { offsetof (struct stat, st_atim),
- offsetof (struct stat, st_mtim),
- offsetof (struct stat, st_ctim) };
- int i;
- for (i = 0; i < sizeof ts_off / sizeof *ts_off; i++)
- {
- struct timespec *ts = (struct timespec *) ((char *) st + ts_off[i]);
- long int q = ts->tv_nsec / timespec_hz;
- long int r = ts->tv_nsec % timespec_hz;
- if (r < 0)
- {
- r += timespec_hz;
- q--;
- }
- ts->tv_nsec = r;
- /* Overflow is possible, as Solaris 11 stat can yield
- tv_sec == TYPE_MINIMUM (time_t) && tv_nsec == -1000000000.
- INT_ADD_WRAPV is OK, since time_t is signed on Solaris. */
- if (ckd_add (&ts->tv_sec, q, ts->tv_sec))
- {
- errno = EOVERFLOW;
- return -1;
- }
- }
- }
-#endif
- return result;
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-_GL_INLINE_HEADER_END
-
-#endif
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