+++ /dev/null
-/* stat-related time functions.
-
- Copyright (C) 2005, 2007 Free Software Foundation, Inc.
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* Written by Paul Eggert. */
-
-#ifndef STAT_TIME_H
-#define STAT_TIME_H 1
-
-#include <sys/stat.h>
-#include <time.h>
-
-/* 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 defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
-# ifdef 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. */
-static inline long int
-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. */
-static inline long int
-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. */
-static inline long int
-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. */
-static inline long int
-get_stat_birthtime_ns (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
- /* Avoid a "parameter unused" warning. */
- (void) st;
- return 0;
-# endif
-}
-
-/* Return *ST's access time. */
-static inline struct timespec
-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. */
-static inline struct timespec
-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. */
-static inline struct timespec
-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 negative tv_nsec. */
-static inline struct timespec
-get_stat_birthtime (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 __WIN32__) && ! defined __CYGWIN__
- /* Woe32 native platforms (but not Cygwin) put the "file creation
- time" in st_ctime (!). See
- <http://msdn2.microsoft.com/de-de/library/14h5k7ff(VS.80).aspx>. */
- t.tv_sec = st->st_ctime;
- t.tv_nsec = 0;
-#else
- /* Birth time is not supported. Set tv_sec to avoid undefined behavior. */
- t.tv_sec = -1;
- t.tv_nsec = -1;
- /* Avoid a "parameter unused" warning. */
- (void) st;
-#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 time stamps. Also, NetBSD
- sometimes returns junk in the birth time fields; work around this
- bug if it it is detected. There's no need to detect negative
- tv_nsec junk as negative tv_nsec already indicates an error. */
- if (t.tv_sec == 0 || 1000000000 <= t.tv_nsec)
- t.tv_nsec = -1;
-#endif
-
- return t;
-}
-
-#endif
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