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Add bash 5.2 to third_party
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Justine Tunney
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e1f65d5f2b
commit
f4a2a65cc8
237 changed files with 120739 additions and 1 deletions
214
third_party/bash/stat-time.h
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214
third_party/bash/stat-time.h
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/* stat-related time functions.
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Copyright (C) 2005, 2007, 2009-2012 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 3 of the License, or
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(at your option) 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, see <http://www.gnu.org/licenses/>. */
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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 <sys/stat.h>
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#if defined (TIME_H_DEFINES_STRUCT_TIMESPEC)
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# include <time.h>
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#elif defined (SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)
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# include <sys/time.h>
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#elif defined (PTHREAD_H_DEFINES_STRUCT_TIMESPEC)
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# include <pthread.h>
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#endif
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#ifndef HAVE_STRUCT_TIMESPEC
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struct timespec
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{
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time_t tv_sec;
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long int tv_nsec;
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};
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#endif
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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, st_mtim, or st_birthtim
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for access, status change, data modification, or birth (creation)
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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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# ifdef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC
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# define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim)
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# else
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# define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.tv_nsec)
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# endif
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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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# 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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# 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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# 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 birth time. */
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static inline long int
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get_stat_birthtime_ns (struct stat const *st)
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{
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# if defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC
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return STAT_TIMESPEC (st, st_birthtim).tv_nsec;
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# elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
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return STAT_TIMESPEC_NS (st, st_birthtim);
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# else
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/* Avoid a "parameter unused" warning. */
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(void) st;
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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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static inline int
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timespec_cmp (struct timespec a, struct timespec b)
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{
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return (a.tv_sec < b.tv_sec
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? -1
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: (a.tv_sec > b.tv_sec
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? 1
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: (int) (a.tv_nsec - b.tv_nsec)));
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}
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/* Return *ST's birth time, if available; otherwise return a value
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with tv_sec and tv_nsec both equal to -1. */
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static inline struct timespec
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get_stat_birthtime (struct stat const *st)
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{
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struct timespec t;
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#if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \
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|| defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC)
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t = STAT_TIMESPEC (st, st_birthtim);
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#elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
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t.tv_sec = st->st_birthtime;
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t.tv_nsec = st->st_birthtimensec;
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#elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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/* Native Windows platforms (but not Cygwin) put the "file creation
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time" in st_ctime (!). See
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<http://msdn2.microsoft.com/de-de/library/14h5k7ff(VS.80).aspx>. */
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t.tv_sec = st->st_ctime;
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t.tv_nsec = 0;
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#else
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/* Birth time is not supported. */
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t.tv_sec = -1;
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t.tv_nsec = -1;
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/* Avoid a "parameter unused" warning. */
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(void) st;
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#endif
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#if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \
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|| defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC \
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|| defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
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/* FreeBSD and NetBSD sometimes signal the absence of knowledge by
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using zero. Attempt to work around this problem. Alas, this can
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report failure even for valid time stamps. Also, NetBSD
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sometimes returns junk in the birth time fields; work around this
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bug if it is detected. */
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if (! (t.tv_sec && 0 <= t.tv_nsec && t.tv_nsec < 1000000000))
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{
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t.tv_sec = -1;
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t.tv_nsec = -1;
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}
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#endif
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return t;
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}
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#endif
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