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annotate tests/test-utimens.h @ 40186:8964917f9574

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author Karl Berry <karl@freefriends.org>
date Mon, 18 Feb 2019 08:02:49 -0800
parents b06060465f09
children
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1 /* Test of file timestamp modification functions.
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2 Copyright (C) 2009-2019 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
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16
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17 #include "test-utimens-common.h"
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18
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19 /* This file is designed to test both utimens(a,b) and
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20 utimensat(AT_FDCWD,a,b,0). FUNC is the function to test. Assumes
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21 that BASE and ASSERT are already defined. If PRINT, warn before
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22 skipping tests with status 77. */
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23 static int
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24 test_utimens (int (*func) (char const *, struct timespec const *), bool print)
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25 {
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26 struct stat st1;
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27 struct stat st2;
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28
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29 ASSERT (close (creat (BASE "file", 0600)) == 0);
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30 /* If utimens truncates to worse resolution than the file system
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31 supports, then time can appear to go backwards between now and a
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32 follow-up utimens with UTIME_NOW or a NULL timespec. Use
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33 UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the
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34 source. */
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35 ASSERT (stat (BASE "file", &st1) == 0);
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36 nap ();
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37 ASSERT (func (BASE "file", NULL) == 0);
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38 ASSERT (stat (BASE "file", &st2) == 0);
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39 ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE));
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40 if (check_ctime)
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41 ASSERT (ctime_compare (&st1, &st2) < 0);
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42 {
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43 /* On some NFS systems, the 'now' timestamp of creat or a NULL
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44 timespec is determined by the server, but the 'now' timestamp
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45 determined by gettime() (as is done when using UTIME_NOW) is
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46 determined by the client; since the two machines are not
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47 necessarily on the same clock, this is another case where time
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48 can appear to go backwards. The rest of this test cares about
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49 client time, so manually use gettime() to set both times. */
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50 struct timespec ts[2];
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51 gettime (&ts[0]);
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52 ts[1] = ts[0];
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53 ASSERT (func (BASE "file", ts) == 0);
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54 ASSERT (stat (BASE "file", &st1) == 0);
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55 nap ();
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56 }
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57
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58 /* Invalid arguments. */
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59 errno = 0;
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60 ASSERT (func ("no_such", NULL) == -1);
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61 ASSERT (errno == ENOENT);
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62 errno = 0;
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63 ASSERT (func ("no_such/", NULL) == -1);
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64 ASSERT (errno == ENOENT || errno == ENOTDIR);
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65 errno = 0;
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66 ASSERT (func ("", NULL) == -1);
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67 ASSERT (errno == ENOENT);
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68 {
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69 struct timespec ts[2];
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70 ts[0].tv_sec = Y2K;
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71 ts[0].tv_nsec = UTIME_BOGUS_POS;
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72 ts[1].tv_sec = Y2K;
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73 ts[1].tv_nsec = 0;
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74 errno = 0;
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75 ASSERT (func (BASE "file", ts) == -1);
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76 ASSERT (errno == EINVAL);
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77 }
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78 {
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79 struct timespec ts[2];
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80 ts[0].tv_sec = Y2K;
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81 ts[0].tv_nsec = 0;
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82 ts[1].tv_sec = Y2K;
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83 ts[1].tv_nsec = UTIME_BOGUS_NEG;
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84 errno = 0;
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85 ASSERT (func (BASE "file", ts) == -1);
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86 ASSERT (errno == EINVAL);
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87 }
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88 {
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89 struct timespec ts[2];
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90 ts[0].tv_sec = Y2K;
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91 ts[0].tv_nsec = 0;
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92 ts[1] = ts[0];
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93 errno = 0;
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94 ASSERT (func (BASE "file/", ts) == -1);
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95 ASSERT (errno == ENOTDIR || errno == EINVAL);
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96 }
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97 ASSERT (stat (BASE "file", &st2) == 0);
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98 ASSERT (st1.st_atime == st2.st_atime);
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99 ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2));
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100 ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0);
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101
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102 /* Set both times. */
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103 {
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104 struct timespec ts[2];
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105 ts[0].tv_sec = Y2K;
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106 ts[0].tv_nsec = BILLION / 2 - 1;
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107 ts[1].tv_sec = Y2K;
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108 ts[1].tv_nsec = BILLION - 1;
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109 ASSERT (func (BASE "file", ts) == 0);
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110 ASSERT (stat (BASE "file", &st2) == 0);
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111 ASSERT (st2.st_atime == Y2K);
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112 ASSERT (0 <= get_stat_atime_ns (&st2));
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113 ASSERT (get_stat_atime_ns (&st2) < BILLION / 2);
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114 ASSERT (st2.st_mtime == Y2K);
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115 ASSERT (0 <= get_stat_mtime_ns (&st2));
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116 ASSERT (get_stat_mtime_ns (&st2) < BILLION);
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117 if (check_ctime)
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118 ASSERT (ctime_compare (&st1, &st2) < 0);
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119 }
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120
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121 /* Play with UTIME_OMIT, UTIME_NOW. */
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122 {
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123 struct stat st3;
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124 struct timespec ts[2];
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125 ts[0].tv_sec = BILLION;
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126 ts[0].tv_nsec = UTIME_OMIT;
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127 ts[1].tv_sec = 0;
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128 ts[1].tv_nsec = UTIME_NOW;
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129 nap ();
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130 ASSERT (func (BASE "file", ts) == 0);
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131 ASSERT (stat (BASE "file", &st3) == 0);
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132 ASSERT (st3.st_atime == Y2K);
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133 ASSERT (0 <= get_stat_atime_ns (&st3));
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134 ASSERT (get_stat_atime_ns (&st3) < BILLION / 2);
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135 /* See comment above about this utimecmp call. */
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136 ASSERT (0 <= utimecmp (BASE "file", &st3, &st1, UTIMECMP_TRUNCATE_SOURCE));
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137 if (check_ctime)
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138 ASSERT (ctime_compare (&st2, &st3) < 0);
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139 nap ();
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140 ts[0].tv_nsec = 0;
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141 ts[1].tv_nsec = UTIME_OMIT;
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142 ASSERT (func (BASE "file", ts) == 0);
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143 ASSERT (stat (BASE "file", &st2) == 0);
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144 ASSERT (st2.st_atime == BILLION);
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145 ASSERT (get_stat_atime_ns (&st2) == 0);
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146 ASSERT (st3.st_mtime == st2.st_mtime);
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147 ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2));
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148 if (check_ctime)
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149 ASSERT (ctime_compare (&st3, &st2) < 0);
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150 }
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151
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152 /* Make sure this dereferences symlinks. */
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153 if (symlink (BASE "file", BASE "link"))
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154 {
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155 ASSERT (unlink (BASE "file") == 0);
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156 if (print)
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157 fputs ("skipping test: symlinks not supported on this file system\n",
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158 stderr);
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159 return 77;
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160 }
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161 ASSERT (lstat (BASE "link", &st1) == 0);
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162 ASSERT (st1.st_mtime != Y2K);
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163 errno = 0;
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164 ASSERT (func (BASE "link/", NULL) == -1);
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165 ASSERT (errno == ENOTDIR);
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166 {
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167 struct timespec ts[2];
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Paul Eggert <eggert@cs.ucla.edu>
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168 ts[0].tv_sec = Y2K;
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169 ts[0].tv_nsec = 0;
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170 ts[1] = ts[0];
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171 ASSERT (func (BASE "link", ts) == 0);
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172 ASSERT (lstat (BASE "link", &st2) == 0);
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173 /* Can't compare atimes, since lstat() changes symlink atime on cygwin. */
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174 ASSERT (st1.st_mtime == st2.st_mtime);
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175 ASSERT (stat (BASE "link", &st2) == 0);
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176 ASSERT (st2.st_mtime == Y2K);
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177 ASSERT (get_stat_mtime_ns (&st2) == 0);
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178 }
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179
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180 /* Cleanup. */
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181 ASSERT (unlink (BASE "link") == 0);
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182 ASSERT (unlink (BASE "file") == 0);
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183 return 0;
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184 }