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90306bc508
buggy in the HAVE_STRUCT_STAT_ST_SPARE1 case, and they were dubious anyway. I rewrote 'tar' to not use them any more.
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/* stat-related time functions.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Paul Eggert. */
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#ifndef STAT_TIME_H
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#define STAT_TIME_H 1
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#include "timespec.h"
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/* STAT_TIMESPEC (ST, ST_XTIM) is the ST_XTIM member for *ST of type
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struct timespec, if available. If not, then STAT_TIMESPEC_NS (ST,
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ST_XTIM) is the nanosecond component of the ST_XTIM member for *ST,
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if available. ST_XTIM can be st_atim, st_ctim, or st_mtim for
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access, status change, or data modification time, respectively.
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These macros are private to stat-time.h. */
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#if defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC
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# define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim)
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#elif defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC
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# define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim##espec)
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#elif defined HAVE_STRUCT_STAT_ST_ATIMENSEC
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# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim##ensec)
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#elif defined HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC
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# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.st__tim.tv_nsec)
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#endif
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/* Return the nanosecond component of *ST's access time. */
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static inline long int
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get_stat_atime_ns (struct stat const *st)
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{
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# if defined STAT_TIMESPEC
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return STAT_TIMESPEC (st, st_atim).tv_nsec;
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# elif defined STAT_TIMESPEC_NS
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return STAT_TIMESPEC_NS (st, st_atim);
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# elif defined HAVE_STRUCT_STAT_ST_SPARE1
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return st->st_spare1 * 1000;
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# else
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return 0;
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# endif
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}
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/* Return the nanosecond component of *ST's status change time. */
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static inline long int
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get_stat_ctime_ns (struct stat const *st)
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{
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# if defined STAT_TIMESPEC
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return STAT_TIMESPEC (st, st_ctim).tv_nsec;
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# elif defined STAT_TIMESPEC_NS
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return STAT_TIMESPEC_NS (st, st_ctim);
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# elif defined HAVE_STRUCT_STAT_ST_SPARE1
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return st->st_spare3 * 1000;
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# else
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return 0;
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# endif
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}
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/* Return the nanosecond component of *ST's data modification time. */
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static inline long int
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get_stat_mtime_ns (struct stat const *st)
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{
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# if defined STAT_TIMESPEC
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return STAT_TIMESPEC (st, st_mtim).tv_nsec;
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# elif defined STAT_TIMESPEC_NS
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return STAT_TIMESPEC_NS (st, st_mtim);
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# elif defined HAVE_STRUCT_STAT_ST_SPARE1
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return st->st_spare2 * 1000;
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# else
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return 0;
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# endif
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}
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/* Return *ST's access time. */
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static inline struct timespec
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get_stat_atime (struct stat const *st)
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{
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#ifdef STAT_TIMESPEC
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return STAT_TIMESPEC (st, st_atim);
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#else
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struct timespec t;
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t.tv_sec = st->st_atime;
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t.tv_nsec = get_stat_atime_ns (st);
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return t;
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#endif
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}
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/* Return *ST's status change time. */
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static inline struct timespec
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get_stat_ctime (struct stat const *st)
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{
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#ifdef STAT_TIMESPEC
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return STAT_TIMESPEC (st, st_ctim);
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#else
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struct timespec t;
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t.tv_sec = st->st_ctime;
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t.tv_nsec = get_stat_ctime_ns (st);
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return t;
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#endif
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}
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/* Return *ST's data modification time. */
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static inline struct timespec
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get_stat_mtime (struct stat const *st)
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{
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#ifdef STAT_TIMESPEC
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return STAT_TIMESPEC (st, st_mtim);
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#else
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struct timespec t;
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t.tv_sec = st->st_mtime;
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t.tv_nsec = get_stat_mtime_ns (st);
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return t;
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#endif
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}
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#endif
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