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291 lines
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<td width="35%" class="headerValue"><a href="../../index.html">top level</a> - <a href="index.html">bash-4.4.23/include</a> - stat-time.h<span style="font-size: 80%;"> (source / <a href="stat-time.h.func-sort-c.html">functions</a>)</span></td>
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<pre class="sourceHeading"> Line data Source code</pre>
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<pre class="source">
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<a name="1"><span class="lineNum"> 1 </span> : /* stat-related time functions.</a>
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<a name="2"><span class="lineNum"> 2 </span> : </a>
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<a name="3"><span class="lineNum"> 3 </span> : Copyright (C) 2005, 2007, 2009-2012 Free Software Foundation, Inc.</a>
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<a name="4"><span class="lineNum"> 4 </span> : </a>
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<a name="5"><span class="lineNum"> 5 </span> : This program is free software: you can redistribute it and/or modify</a>
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<a name="6"><span class="lineNum"> 6 </span> : it under the terms of the GNU General Public License as published by</a>
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<a name="7"><span class="lineNum"> 7 </span> : the Free Software Foundation; either version 3 of the License, or</a>
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<a name="8"><span class="lineNum"> 8 </span> : (at your option) any later version.</a>
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<a name="9"><span class="lineNum"> 9 </span> : </a>
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<a name="10"><span class="lineNum"> 10 </span> : This program is distributed in the hope that it will be useful,</a>
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<a name="11"><span class="lineNum"> 11 </span> : but WITHOUT ANY WARRANTY; without even the implied warranty of</a>
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<a name="12"><span class="lineNum"> 12 </span> : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</a>
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<a name="13"><span class="lineNum"> 13 </span> : GNU General Public License for more details.</a>
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<a name="14"><span class="lineNum"> 14 </span> : </a>
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<a name="15"><span class="lineNum"> 15 </span> : You should have received a copy of the GNU General Public License</a>
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<a name="16"><span class="lineNum"> 16 </span> : along with this program. If not, see <http://www.gnu.org/licenses/>. */</a>
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<a name="17"><span class="lineNum"> 17 </span> : </a>
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<a name="18"><span class="lineNum"> 18 </span> : /* Written by Paul Eggert. */</a>
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<a name="19"><span class="lineNum"> 19 </span> : </a>
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<a name="20"><span class="lineNum"> 20 </span> : #ifndef STAT_TIME_H</a>
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<a name="21"><span class="lineNum"> 21 </span> : #define STAT_TIME_H 1</a>
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<a name="22"><span class="lineNum"> 22 </span> : </a>
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<a name="23"><span class="lineNum"> 23 </span> : #include <sys/stat.h></a>
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<a name="24"><span class="lineNum"> 24 </span> : </a>
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<a name="25"><span class="lineNum"> 25 </span> : #if defined (TIME_H_DEFINES_STRUCT_TIMESPEC)</a>
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<a name="26"><span class="lineNum"> 26 </span> : # include <time.h></a>
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<a name="27"><span class="lineNum"> 27 </span> : #elif defined (SYS_TIME_H_DEFINES_STRUCT_TIMESPEC)</a>
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<a name="28"><span class="lineNum"> 28 </span> : # include <sys/time.h></a>
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<a name="29"><span class="lineNum"> 29 </span> : #elif defined (PTHREAD_H_DEFINES_STRUCT_TIMESPEC)</a>
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<a name="30"><span class="lineNum"> 30 </span> : # include <pthread.h></a>
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<a name="31"><span class="lineNum"> 31 </span> : #endif</a>
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<a name="32"><span class="lineNum"> 32 </span> : </a>
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<a name="33"><span class="lineNum"> 33 </span> : #ifndef HAVE_STRUCT_TIMESPEC</a>
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<a name="34"><span class="lineNum"> 34 </span> : struct timespec</a>
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<a name="35"><span class="lineNum"> 35 </span> : {</a>
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<a name="36"><span class="lineNum"> 36 </span> : time_t tv_sec;</a>
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<a name="37"><span class="lineNum"> 37 </span> : long int tv_nsec;</a>
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<a name="38"><span class="lineNum"> 38 </span> : };</a>
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<a name="39"><span class="lineNum"> 39 </span> : #endif</a>
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<a name="40"><span class="lineNum"> 40 </span> : </a>
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<a name="41"><span class="lineNum"> 41 </span> : /* STAT_TIMESPEC (ST, ST_XTIM) is the ST_XTIM member for *ST of type</a>
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<a name="42"><span class="lineNum"> 42 </span> : struct timespec, if available. If not, then STAT_TIMESPEC_NS (ST,</a>
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<a name="43"><span class="lineNum"> 43 </span> : ST_XTIM) is the nanosecond component of the ST_XTIM member for *ST,</a>
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<a name="44"><span class="lineNum"> 44 </span> : if available. ST_XTIM can be st_atim, st_ctim, st_mtim, or st_birthtim</a>
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<a name="45"><span class="lineNum"> 45 </span> : for access, status change, data modification, or birth (creation)</a>
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<a name="46"><span class="lineNum"> 46 </span> : time respectively.</a>
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<a name="47"><span class="lineNum"> 47 </span> : </a>
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<a name="48"><span class="lineNum"> 48 </span> : These macros are private to stat-time.h. */</a>
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<a name="49"><span class="lineNum"> 49 </span> : #if defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC</a>
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<a name="50"><span class="lineNum"> 50 </span> : # ifdef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC</a>
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<a name="51"><span class="lineNum"> 51 </span> : # define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim)</a>
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<a name="52"><span class="lineNum"> 52 </span> : # else</a>
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<a name="53"><span class="lineNum"> 53 </span> : # define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.tv_nsec)</a>
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<a name="54"><span class="lineNum"> 54 </span> : # endif</a>
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<a name="55"><span class="lineNum"> 55 </span> : #elif defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC</a>
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<a name="56"><span class="lineNum"> 56 </span> : # define STAT_TIMESPEC(st, st_xtim) ((st)->st_xtim##espec)</a>
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<a name="57"><span class="lineNum"> 57 </span> : #elif defined HAVE_STRUCT_STAT_ST_ATIMENSEC</a>
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<a name="58"><span class="lineNum"> 58 </span> : # define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim##ensec)</a>
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<a name="59"><span class="lineNum"> 59 </span> : #elif defined HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC</a>
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<a name="60"><span class="lineNum"> 60 </span> : # define STAT_TIMESPEC_NS(st, st_xtim) ((st)->st_xtim.st__tim.tv_nsec)</a>
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<a name="61"><span class="lineNum"> 61 </span> : #endif</a>
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<a name="62"><span class="lineNum"> 62 </span> : </a>
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<a name="63"><span class="lineNum"> 63 </span> : /* Return the nanosecond component of *ST's access time. */</a>
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<a name="64"><span class="lineNum"> 64 </span> : static inline long int</a>
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<a name="65"><span class="lineNum"> 65 </span> : get_stat_atime_ns (struct stat const *st)</a>
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<a name="66"><span class="lineNum"> 66 </span> : {</a>
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<a name="67"><span class="lineNum"> 67 </span> : # if defined STAT_TIMESPEC</a>
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<a name="68"><span class="lineNum"> 68 </span> : return STAT_TIMESPEC (st, st_atim).tv_nsec;</a>
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<a name="69"><span class="lineNum"> 69 </span> : # elif defined STAT_TIMESPEC_NS</a>
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<a name="70"><span class="lineNum"> 70 </span> : return STAT_TIMESPEC_NS (st, st_atim);</a>
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<a name="71"><span class="lineNum"> 71 </span> : # else</a>
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<a name="72"><span class="lineNum"> 72 </span> : return 0;</a>
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<a name="73"><span class="lineNum"> 73 </span> : # endif</a>
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<a name="74"><span class="lineNum"> 74 </span> : }</a>
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<a name="75"><span class="lineNum"> 75 </span> : </a>
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<a name="76"><span class="lineNum"> 76 </span> : /* Return the nanosecond component of *ST's status change time. */</a>
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<a name="77"><span class="lineNum"> 77 </span> : static inline long int</a>
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<a name="78"><span class="lineNum"> 78 </span> : get_stat_ctime_ns (struct stat const *st)</a>
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<a name="79"><span class="lineNum"> 79 </span> : {</a>
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<a name="80"><span class="lineNum"> 80 </span> : # if defined STAT_TIMESPEC</a>
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<a name="81"><span class="lineNum"> 81 </span> : return STAT_TIMESPEC (st, st_ctim).tv_nsec;</a>
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<a name="82"><span class="lineNum"> 82 </span> : # elif defined STAT_TIMESPEC_NS</a>
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<a name="83"><span class="lineNum"> 83 </span> : return STAT_TIMESPEC_NS (st, st_ctim);</a>
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<a name="84"><span class="lineNum"> 84 </span> : # else</a>
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<a name="85"><span class="lineNum"> 85 </span> : return 0;</a>
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<a name="86"><span class="lineNum"> 86 </span> : # endif</a>
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<a name="87"><span class="lineNum"> 87 </span> : }</a>
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<a name="88"><span class="lineNum"> 88 </span> : </a>
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<a name="89"><span class="lineNum"> 89 </span> : /* Return the nanosecond component of *ST's data modification time. */</a>
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<a name="90"><span class="lineNum"> 90 </span> : static inline long int</a>
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<a name="91"><span class="lineNum"> 91 </span> : get_stat_mtime_ns (struct stat const *st)</a>
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<a name="92"><span class="lineNum"> 92 </span> : {</a>
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<a name="93"><span class="lineNum"> 93 </span> : # if defined STAT_TIMESPEC</a>
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<a name="94"><span class="lineNum"> 94 </span> : return STAT_TIMESPEC (st, st_mtim).tv_nsec;</a>
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<a name="95"><span class="lineNum"> 95 </span> : # elif defined STAT_TIMESPEC_NS</a>
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<a name="96"><span class="lineNum"> 96 </span> : return STAT_TIMESPEC_NS (st, st_mtim);</a>
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<a name="97"><span class="lineNum"> 97 </span> : # else</a>
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<a name="98"><span class="lineNum"> 98 </span> : return 0;</a>
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<a name="99"><span class="lineNum"> 99 </span> : # endif</a>
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<a name="100"><span class="lineNum"> 100 </span> : }</a>
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<a name="101"><span class="lineNum"> 101 </span> : </a>
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<a name="102"><span class="lineNum"> 102 </span> : /* Return the nanosecond component of *ST's birth time. */</a>
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<a name="103"><span class="lineNum"> 103 </span> : static inline long int</a>
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<a name="104"><span class="lineNum"> 104 </span> : get_stat_birthtime_ns (struct stat const *st)</a>
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<a name="105"><span class="lineNum"> 105 </span> : {</a>
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<a name="106"><span class="lineNum"> 106 </span> : # if defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC</a>
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<a name="107"><span class="lineNum"> 107 </span> : return STAT_TIMESPEC (st, st_birthtim).tv_nsec;</a>
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<a name="108"><span class="lineNum"> 108 </span> : # elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC</a>
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<a name="109"><span class="lineNum"> 109 </span> : return STAT_TIMESPEC_NS (st, st_birthtim);</a>
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<a name="110"><span class="lineNum"> 110 </span> : # else</a>
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<a name="111"><span class="lineNum"> 111 </span> : /* Avoid a "parameter unused" warning. */</a>
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<a name="112"><span class="lineNum"> 112 </span> : (void) st;</a>
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<a name="113"><span class="lineNum"> 113 </span> : return 0;</a>
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<a name="114"><span class="lineNum"> 114 </span> : # endif</a>
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<a name="115"><span class="lineNum"> 115 </span> : }</a>
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<a name="116"><span class="lineNum"> 116 </span> : </a>
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<a name="117"><span class="lineNum"> 117 </span> : /* Return *ST's access time. */</a>
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<a name="118"><span class="lineNum"> 118 </span> : static inline struct timespec</a>
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<a name="119"><span class="lineNum"> 119 </span> : get_stat_atime (struct stat const *st)</a>
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<a name="120"><span class="lineNum"> 120 </span> : {</a>
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<a name="121"><span class="lineNum"> 121 </span> : #ifdef STAT_TIMESPEC</a>
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<a name="122"><span class="lineNum"> 122 </span> : return STAT_TIMESPEC (st, st_atim);</a>
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<a name="123"><span class="lineNum"> 123 </span> : #else</a>
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<a name="124"><span class="lineNum"> 124 </span> : struct timespec t;</a>
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<a name="125"><span class="lineNum"> 125 </span> : t.tv_sec = st->st_atime;</a>
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<a name="126"><span class="lineNum"> 126 </span> : t.tv_nsec = get_stat_atime_ns (st);</a>
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<a name="127"><span class="lineNum"> 127 </span> : return t;</a>
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<a name="128"><span class="lineNum"> 128 </span> : #endif</a>
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<a name="129"><span class="lineNum"> 129 </span> : }</a>
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<a name="130"><span class="lineNum"> 130 </span> : </a>
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<a name="131"><span class="lineNum"> 131 </span> : /* Return *ST's status change time. */</a>
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<a name="132"><span class="lineNum"> 132 </span> : static inline struct timespec</a>
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<a name="133"><span class="lineNum"> 133 </span> : get_stat_ctime (struct stat const *st)</a>
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<a name="134"><span class="lineNum"> 134 </span> : {</a>
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<a name="135"><span class="lineNum"> 135 </span> : #ifdef STAT_TIMESPEC</a>
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<a name="136"><span class="lineNum"> 136 </span> : return STAT_TIMESPEC (st, st_ctim);</a>
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<a name="137"><span class="lineNum"> 137 </span> : #else</a>
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<a name="138"><span class="lineNum"> 138 </span> : struct timespec t;</a>
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<a name="139"><span class="lineNum"> 139 </span> : t.tv_sec = st->st_ctime;</a>
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<a name="140"><span class="lineNum"> 140 </span> : t.tv_nsec = get_stat_ctime_ns (st);</a>
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<a name="141"><span class="lineNum"> 141 </span> : return t;</a>
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<a name="142"><span class="lineNum"> 142 </span> : #endif</a>
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<a name="143"><span class="lineNum"> 143 </span> : }</a>
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<a name="144"><span class="lineNum"> 144 </span> : </a>
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<a name="145"><span class="lineNum"> 145 </span> : /* Return *ST's data modification time. */</a>
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<a name="146"><span class="lineNum"> 146 </span> : static inline struct timespec</a>
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<a name="147"><span class="lineNum"> 147 </span><span class="lineNoCov"> 0 : get_stat_mtime (struct stat const *st)</span></a>
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<a name="148"><span class="lineNum"> 148 </span> : {</a>
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<a name="149"><span class="lineNum"> 149 </span> : #ifdef STAT_TIMESPEC</a>
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<a name="150"><span class="lineNum"> 150 </span><span class="lineNoCov"> 0 : return STAT_TIMESPEC (st, st_mtim);</span></a>
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<a name="151"><span class="lineNum"> 151 </span> : #else</a>
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<a name="152"><span class="lineNum"> 152 </span> : struct timespec t;</a>
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<a name="153"><span class="lineNum"> 153 </span> : t.tv_sec = st->st_mtime;</a>
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<a name="154"><span class="lineNum"> 154 </span> : t.tv_nsec = get_stat_mtime_ns (st);</a>
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<a name="155"><span class="lineNum"> 155 </span> : return t;</a>
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<a name="156"><span class="lineNum"> 156 </span> : #endif</a>
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<a name="157"><span class="lineNum"> 157 </span> : }</a>
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<a name="158"><span class="lineNum"> 158 </span> : </a>
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<a name="159"><span class="lineNum"> 159 </span> : static inline int</a>
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<a name="160"><span class="lineNum"> 160 </span> : timespec_cmp (struct timespec a, struct timespec b)</a>
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<a name="161"><span class="lineNum"> 161 </span> : {</a>
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<a name="162"><span class="lineNum"> 162 </span><span class="lineNoCov"> 0 : return (a.tv_sec < b.tv_sec</span></a>
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<a name="163"><span class="lineNum"> 163 </span> : ? -1</a>
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<a name="164"><span class="lineNum"> 164 </span><span class="lineNoCov"> 0 : : (a.tv_sec > b.tv_sec</span></a>
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<a name="165"><span class="lineNum"> 165 </span> : ? 1</a>
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<a name="166"><span class="lineNum"> 166 </span><span class="lineNoCov"> 0 : : (int) (a.tv_nsec - b.tv_nsec)));</span></a>
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<a name="167"><span class="lineNum"> 167 </span> : }</a>
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<a name="168"><span class="lineNum"> 168 </span> : </a>
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<a name="169"><span class="lineNum"> 169 </span> : /* Return *ST's birth time, if available; otherwise return a value</a>
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<a name="170"><span class="lineNum"> 170 </span> : with tv_sec and tv_nsec both equal to -1. */</a>
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<a name="171"><span class="lineNum"> 171 </span> : static inline struct timespec</a>
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<a name="172"><span class="lineNum"> 172 </span> : get_stat_birthtime (struct stat const *st)</a>
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<a name="173"><span class="lineNum"> 173 </span> : {</a>
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<a name="174"><span class="lineNum"> 174 </span> : struct timespec t;</a>
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<a name="175"><span class="lineNum"> 175 </span> : </a>
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<a name="176"><span class="lineNum"> 176 </span> : #if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \</a>
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<a name="177"><span class="lineNum"> 177 </span> : || defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC)</a>
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<a name="178"><span class="lineNum"> 178 </span> : t = STAT_TIMESPEC (st, st_birthtim);</a>
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<a name="179"><span class="lineNum"> 179 </span> : #elif defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC</a>
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<a name="180"><span class="lineNum"> 180 </span> : t.tv_sec = st->st_birthtime;</a>
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<a name="181"><span class="lineNum"> 181 </span> : t.tv_nsec = st->st_birthtimensec;</a>
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<a name="182"><span class="lineNum"> 182 </span> : #elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__</a>
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<a name="183"><span class="lineNum"> 183 </span> : /* Native Windows platforms (but not Cygwin) put the "file creation</a>
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<a name="184"><span class="lineNum"> 184 </span> : time" in st_ctime (!). See</a>
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<a name="185"><span class="lineNum"> 185 </span> : <http://msdn2.microsoft.com/de-de/library/14h5k7ff(VS.80).aspx>. */</a>
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<a name="186"><span class="lineNum"> 186 </span> : t.tv_sec = st->st_ctime;</a>
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<a name="187"><span class="lineNum"> 187 </span> : t.tv_nsec = 0;</a>
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<a name="188"><span class="lineNum"> 188 </span> : #else</a>
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<a name="189"><span class="lineNum"> 189 </span> : /* Birth time is not supported. */</a>
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<a name="190"><span class="lineNum"> 190 </span> : t.tv_sec = -1;</a>
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<a name="191"><span class="lineNum"> 191 </span> : t.tv_nsec = -1;</a>
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<a name="192"><span class="lineNum"> 192 </span> : /* Avoid a "parameter unused" warning. */</a>
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<a name="193"><span class="lineNum"> 193 </span> : (void) st;</a>
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<a name="194"><span class="lineNum"> 194 </span> : #endif</a>
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<a name="195"><span class="lineNum"> 195 </span> : </a>
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<a name="196"><span class="lineNum"> 196 </span> : #if (defined HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC \</a>
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<a name="197"><span class="lineNum"> 197 </span> : || defined HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC \</a>
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<a name="198"><span class="lineNum"> 198 </span> : || defined HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)</a>
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<a name="199"><span class="lineNum"> 199 </span> : /* FreeBSD and NetBSD sometimes signal the absence of knowledge by</a>
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<a name="200"><span class="lineNum"> 200 </span> : using zero. Attempt to work around this problem. Alas, this can</a>
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<a name="201"><span class="lineNum"> 201 </span> : report failure even for valid time stamps. Also, NetBSD</a>
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<a name="202"><span class="lineNum"> 202 </span> : sometimes returns junk in the birth time fields; work around this</a>
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<a name="203"><span class="lineNum"> 203 </span> : bug if it is detected. */</a>
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<a name="204"><span class="lineNum"> 204 </span> : if (! (t.tv_sec && 0 <= t.tv_nsec && t.tv_nsec < 1000000000))</a>
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<a name="205"><span class="lineNum"> 205 </span> : {</a>
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<a name="206"><span class="lineNum"> 206 </span> : t.tv_sec = -1;</a>
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<a name="207"><span class="lineNum"> 207 </span> : t.tv_nsec = -1;</a>
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<a name="208"><span class="lineNum"> 208 </span> : }</a>
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<a name="209"><span class="lineNum"> 209 </span> : #endif</a>
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<a name="210"><span class="lineNum"> 210 </span> : </a>
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<a name="211"><span class="lineNum"> 211 </span> : return t;</a>
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<a name="212"><span class="lineNum"> 212 </span> : }</a>
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<a name="213"><span class="lineNum"> 213 </span> : </a>
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<a name="214"><span class="lineNum"> 214 </span> : #endif</a>
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</pre>
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