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annotate tests/test-chown.h @ 17249:e542fd46ad6f

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maint: update all copyright year number ranges Run "make update-copyright". Compare to commit 1602f0a from last year. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Tue, 01 Jan 2013 00:50:58 +0000
parents 8250f2777afc
children 7266df63bb4d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Tests of chown.
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2 Copyright (C) 2009-2013 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 <http://www.gnu.org/licenses/>. */
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16
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17 /* Written by Eric Blake <ebb9@byu.net>, 2009. */
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18
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19 #include "nap.h"
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20
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21 #if !HAVE_GETEGID
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22 # define getegid() ((gid_t) -1)
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23 #endif
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24
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25 /* This file is designed to test chown(n,o,g) and
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26 chownat(AT_FDCWD,n,o,g,0). FUNC is the function to test. Assumes
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27 that BASE and ASSERT are already defined, and that appropriate
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28 headers are already included. If PRINT, warn before skipping
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29 symlink tests with status 77. */
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30
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31 static int
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32 test_chown (int (*func) (char const *, uid_t, gid_t), bool print)
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33 {
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34 struct stat st1;
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35 struct stat st2;
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36 gid_t *gids = NULL;
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37 int gids_count;
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38 int result;
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39
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40 /* Solaris 8 is interesting - if the current process belongs to
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41 multiple groups, the current directory is owned by a group that
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42 the current process belongs to but different than getegid(), and
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43 the current directory does not have the S_ISGID bit, then regular
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44 files created in the directory belong to the directory's group,
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45 but symlinks belong to the current effective group id. If
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46 S_ISGID is set, then both files and symlinks belong to the
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47 directory's group. However, it is possible to run the testsuite
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48 from within a directory owned by a group we don't belong to, in
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49 which case all things that we create belong to the current
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50 effective gid. So, work around the issues by creating a
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51 subdirectory (we are guaranteed that the subdirectory will be
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52 owned by one of our current groups), change ownership of that
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53 directory to the current effective gid (which will thus succeed),
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54 then create all other files within that directory (eliminating
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55 questions on whether inheritance or current id triumphs, since
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56 the two methods resolve to the same gid). */
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57 ASSERT (mkdir (BASE "dir", 0700) == 0);
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58 ASSERT (stat (BASE "dir", &st1) == 0);
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59
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60 /* Filter out mingw, which has no concept of groups. */
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61 result = func (BASE "dir", st1.st_uid, getegid ());
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62 if (result == -1 && errno == ENOSYS)
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63 {
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64 ASSERT (rmdir (BASE "dir") == 0);
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65 if (print)
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66 fputs ("skipping test: no support for ownership\n", stderr);
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67 return 77;
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68 }
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69 ASSERT (result == 0);
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70
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71 ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
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72 ASSERT (stat (BASE "dir/file", &st1) == 0);
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73 ASSERT (st1.st_uid != (uid_t) -1);
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74 ASSERT (st1.st_gid != (gid_t) -1);
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75 ASSERT (st1.st_gid == getegid ());
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76
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77 /* Sanity check of error cases. */
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78 errno = 0;
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79 ASSERT (func ("", -1, -1) == -1);
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80 ASSERT (errno == ENOENT);
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81 errno = 0;
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82 ASSERT (func ("no_such", -1, -1) == -1);
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83 ASSERT (errno == ENOENT);
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84 errno = 0;
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85 ASSERT (func ("no_such/", -1, -1) == -1);
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86 ASSERT (errno == ENOENT);
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87 errno = 0;
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88 ASSERT (func (BASE "dir/file/", -1, -1) == -1);
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89 ASSERT (errno == ENOTDIR);
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90
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91 /* Check that -1 does not alter ownership. */
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92 ASSERT (func (BASE "dir/file", -1, st1.st_gid) == 0);
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93 ASSERT (func (BASE "dir/file", st1.st_uid, -1) == 0);
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94 ASSERT (func (BASE "dir/file", (uid_t) -1, (gid_t) -1) == 0);
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95 ASSERT (stat (BASE "dir/file", &st2) == 0);
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96 ASSERT (st1.st_uid == st2.st_uid);
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97 ASSERT (st1.st_gid == st2.st_gid);
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98
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99 /* Even if the values aren't changing, ctime is required to change
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100 if at least one argument is not -1. */
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101 nap ();
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102 ASSERT (func (BASE "dir/file", st1.st_uid, st1.st_gid) == 0);
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103 ASSERT (stat (BASE "dir/file", &st2) == 0);
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104 ASSERT (st1.st_ctime < st2.st_ctime
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105 || (st1.st_ctime == st2.st_ctime
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106 && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
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107
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108 /* Test symlink behavior. */
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109 if (symlink ("link", BASE "dir/link2"))
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110 {
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111 ASSERT (unlink (BASE "dir/file") == 0);
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112 ASSERT (rmdir (BASE "dir") == 0);
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113 if (print)
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114 fputs ("skipping test: symlinks not supported on this file system\n",
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115 stderr);
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116 return 77;
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117 }
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118 errno = 0;
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119 ASSERT (func (BASE "dir/link2", -1, -1) == -1);
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120 ASSERT (errno == ENOENT);
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121 errno = 0;
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122 ASSERT (func (BASE "dir/link2/", st1.st_uid, st1.st_gid) == -1);
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123 ASSERT (errno == ENOENT);
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124 ASSERT (symlink ("file", BASE "dir/link") == 0);
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125
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126 /* For non-privileged users, chown can only portably succeed at
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127 changing group ownership of a file we own. If we belong to at
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128 least two groups, then verifying the correct change is simple.
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129 But if we belong to only one group, then we fall back on the
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130 other observable effect of chown: the ctime must be updated. */
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131 gids_count = mgetgroups (NULL, st1.st_gid, &gids);
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132 if (1 < gids_count)
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133 {
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134 ASSERT (gids[1] != st1.st_gid);
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135 ASSERT (gids[1] != (gid_t) -1);
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136 ASSERT (lstat (BASE "dir/link", &st2) == 0);
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137 ASSERT (st1.st_uid == st2.st_uid);
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138 ASSERT (st1.st_gid == st2.st_gid);
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139 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
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140 ASSERT (st1.st_uid == st2.st_uid);
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141 ASSERT (st1.st_gid == st2.st_gid);
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142
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143 errno = 0;
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144 ASSERT (func (BASE "dir/link2/", -1, gids[1]) == -1);
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145 ASSERT (errno == ENOTDIR);
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146 ASSERT (stat (BASE "dir/file", &st2) == 0);
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147 ASSERT (st1.st_uid == st2.st_uid);
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148 ASSERT (st1.st_gid == st2.st_gid);
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149 ASSERT (lstat (BASE "dir/link", &st2) == 0);
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150 ASSERT (st1.st_uid == st2.st_uid);
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151 ASSERT (st1.st_gid == st2.st_gid);
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152 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
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153 ASSERT (st1.st_uid == st2.st_uid);
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154 ASSERT (st1.st_gid == st2.st_gid);
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155
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156 ASSERT (func (BASE "dir/link2", -1, gids[1]) == 0);
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157 ASSERT (stat (BASE "dir/file", &st2) == 0);
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158 ASSERT (st1.st_uid == st2.st_uid);
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159 ASSERT (gids[1] == st2.st_gid);
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160 ASSERT (lstat (BASE "dir/link", &st2) == 0);
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diff changeset
161 ASSERT (st1.st_uid == st2.st_uid);
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diff changeset
162 ASSERT (st1.st_gid == st2.st_gid);
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163 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
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164 ASSERT (st1.st_uid == st2.st_uid);
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165 ASSERT (st1.st_gid == st2.st_gid);
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diff changeset
166 }
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diff changeset
167 else
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diff changeset
168 {
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169 struct stat l1;
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diff changeset
170 struct stat l2;
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diff changeset
171 ASSERT (stat (BASE "dir/file", &st1) == 0);
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diff changeset
172 ASSERT (lstat (BASE "dir/link", &l1) == 0);
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diff changeset
173 ASSERT (lstat (BASE "dir/link2", &l2) == 0);
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parents:
diff changeset
174
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parents:
diff changeset
175 nap ();
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176 errno = 0;
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177 ASSERT (func (BASE "dir/link2/", -1, st1.st_gid) == -1);
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178 ASSERT (errno == ENOTDIR);
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diff changeset
179 ASSERT (stat (BASE "dir/file", &st2) == 0);
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diff changeset
180 ASSERT (st1.st_ctime == st2.st_ctime);
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diff changeset
181 ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
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182 ASSERT (lstat (BASE "dir/link", &st2) == 0);
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diff changeset
183 ASSERT (l1.st_ctime == st2.st_ctime);
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diff changeset
184 ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
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185 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
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diff changeset
186 ASSERT (l2.st_ctime == st2.st_ctime);
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diff changeset
187 ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
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diff changeset
188
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diff changeset
189 ASSERT (func (BASE "dir/link2", -1, st1.st_gid) == 0);
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190 ASSERT (stat (BASE "dir/file", &st2) == 0);
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diff changeset
191 ASSERT (st1.st_ctime < st2.st_ctime
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diff changeset
192 || (st1.st_ctime == st2.st_ctime
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diff changeset
193 && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
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diff changeset
194 ASSERT (lstat (BASE "dir/link", &st2) == 0);
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diff changeset
195 ASSERT (l1.st_ctime == st2.st_ctime);
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diff changeset
196 ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
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diff changeset
197 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
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diff changeset
198 ASSERT (l2.st_ctime == st2.st_ctime);
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diff changeset
199 ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
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diff changeset
200 }
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parents:
diff changeset
201
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parents:
diff changeset
202 /* Cleanup. */
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diff changeset
203 free (gids);
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diff changeset
204 ASSERT (unlink (BASE "dir/file") == 0);
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parents:
diff changeset
205 ASSERT (unlink (BASE "dir/link") == 0);
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parents:
diff changeset
206 ASSERT (unlink (BASE "dir/link2") == 0);
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parents:
diff changeset
207 ASSERT (rmdir (BASE "dir") == 0);
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diff changeset
208 return 0;
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diff changeset
209 }