2 Copyright (C) 2009 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Eric Blake <ebb9@byu.net>, 2009. */
19 #define TEST_CHOWN_NAP
20 /* Sleep long enough to notice a timestamp difference on the file
21 system in the current directory. */
26 /* Assume the worst case file system of FAT, which has a granularity
29 #else /* HAVE_USLEEP */
33 /* Initialize only once, by sleeping for 20 milliseconds (needed
34 since xfs has a quantization of about 10 milliseconds, even
35 though it has a granularity of 1 nanosecond, and since NTFS
36 has a default quantization of 15.25 milliseconds, even though
37 it has a granularity of 100 nanoseconds). If the seconds
38 differ, repeat the test one more time (in case we crossed a
39 quantization boundary on a file system with 1 second
40 resolution). If we can't observe a difference in only the
41 nanoseconds, then fall back to 2 seconds. However, note that
42 usleep (2000000) is allowed to fail with EINVAL. */
45 ASSERT (close (creat (BASE "tmp", 0600)) == 0);
46 ASSERT (stat (BASE "tmp", &st1) == 0);
47 ASSERT (unlink (BASE "tmp") == 0);
50 ASSERT (close (creat (BASE "tmp", 0600)) == 0);
51 ASSERT (stat (BASE "tmp", &st2) == 0);
52 ASSERT (unlink (BASE "tmp") == 0);
53 if (st1.st_mtime != st2.st_mtime)
55 /* Seconds differ, give it one more shot. */
58 ASSERT (close (creat (BASE "tmp", 0600)) == 0);
59 ASSERT (stat (BASE "tmp", &st2) == 0);
60 ASSERT (unlink (BASE "tmp") == 0);
62 if (! (st1.st_mtime == st2.st_mtime
63 && get_stat_mtime_ns (&st1) < get_stat_mtime_ns (&st2)))
70 #endif /* HAVE_USLEEP */
74 # define getegid() (-1)
77 /* This file is designed to test chown(n,o,g) and
78 chownat(AT_FDCWD,n,o,g,0). FUNC is the function to test. Assumes
79 that BASE and ASSERT are already defined, and that appropriate
80 headers are already included. If PRINT, warn before skipping
81 symlink tests with status 77. */
84 test_chown (int (*func) (char const *, uid_t, gid_t), bool print)
92 /* Solaris 8 is interesting - if the current process belongs to
93 multiple groups, the current directory is owned by a a group that
94 the current process belongs to but different than getegid(), and
95 the current directory does not have the S_ISGID bit, then regular
96 files created in the directory belong to the directory's group,
97 but symlinks belong to the current effective group id. If
98 S_ISGID is set, then both files and symlinks belong to the
99 directory's group. However, it is possible to run the testsuite
100 from within a directory owned by a group we don't belong to, in
101 which case all things that we create belong to the current
102 effective gid. So, work around the issues by creating a
103 subdirectory (we are guaranteed that the subdirectory will be
104 owned by one of our current groups), change ownership of that
105 directory to the current effective gid (which will thus succeed),
106 then create all other files within that directory (eliminating
107 questions on whether inheritance or current id triumphs, since
108 the two methods resolve to the same gid). */
109 ASSERT (mkdir (BASE "dir", 0700) == 0);
110 ASSERT (stat (BASE "dir", &st1) == 0);
112 /* Filter out mingw, which has no concept of groups. */
113 result = func (BASE "dir", st1.st_uid, getegid ());
114 if (result == -1 && errno == ENOSYS)
116 ASSERT (rmdir (BASE "dir") == 0);
118 fputs ("skipping test: no support for ownership\n", stderr);
121 ASSERT (result == 0);
123 ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
124 ASSERT (stat (BASE "dir/file", &st1) == 0);
125 ASSERT (st1.st_uid != -1);
126 ASSERT (st1.st_gid != -1);
127 ASSERT (st1.st_gid == getegid ());
129 /* Sanity check of error cases. */
131 ASSERT (func ("", -1, -1) == -1);
132 ASSERT (errno == ENOENT);
134 ASSERT (func ("no_such", -1, -1) == -1);
135 ASSERT (errno == ENOENT);
137 ASSERT (func ("no_such/", -1, -1) == -1);
138 ASSERT (errno == ENOENT);
140 ASSERT (func (BASE "dir/file/", -1, -1) == -1);
141 ASSERT (errno == ENOTDIR);
143 /* Check that -1 does not alter ownership. */
144 ASSERT (func (BASE "dir/file", -1, st1.st_gid) == 0);
145 ASSERT (func (BASE "dir/file", st1.st_uid, -1) == 0);
146 ASSERT (stat (BASE "dir/file", &st2) == 0);
147 ASSERT (st1.st_uid == st2.st_uid);
148 ASSERT (st1.st_gid == st2.st_gid);
150 /* Even if the values aren't changing, ctime is required to change
151 if at least one argument is not -1. */
153 ASSERT (func (BASE "dir/file", st1.st_uid, st1.st_gid) == 0);
154 ASSERT (stat (BASE "dir/file", &st2) == 0);
155 ASSERT (st1.st_ctime < st2.st_ctime
156 || (st1.st_ctime == st2.st_ctime
157 && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
159 /* Test symlink behavior. */
160 if (symlink ("link", BASE "dir/link2"))
162 ASSERT (unlink (BASE "dir/file") == 0);
163 ASSERT (rmdir (BASE "dir") == 0);
165 fputs ("skipping test: symlinks not supported on this file system\n",
170 ASSERT (func (BASE "dir/link2", -1, -1) == -1);
171 ASSERT (errno == ENOENT);
173 ASSERT (func (BASE "dir/link2/", st1.st_uid, st1.st_gid) == -1);
174 ASSERT (errno == ENOENT);
175 ASSERT (symlink ("file", BASE "dir/link") == 0);
177 /* For non-privileged users, chown can only portably succeed at
178 changing group ownership of a file we own. If we belong to at
179 least two groups, then verifying the correct change is simple.
180 But if we belong to only one group, then we fall back on the
181 other observable effect of chown: the ctime must be updated.
182 Be careful of duplicates returned by getgroups. */
183 gids_count = mgetgroups (NULL, -1, &gids);
184 if (2 <= gids_count && gids[0] == gids[1] && 2 < gids_count--)
186 if (1 < gids_count || (gids_count == 1 && gids[0] != st1.st_gid))
188 if (gids[0] == st1.st_gid)
190 ASSERT (1 < gids_count);
191 ASSERT (gids[0] != gids[1]);
194 ASSERT (gids[0] != st1.st_gid);
195 ASSERT (gids[0] != -1);
196 ASSERT (lstat (BASE "dir/link", &st2) == 0);
197 ASSERT (st1.st_uid == st2.st_uid);
198 ASSERT (st1.st_gid == st2.st_gid);
199 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
200 ASSERT (st1.st_uid == st2.st_uid);
201 ASSERT (st1.st_gid == st2.st_gid);
204 ASSERT (func (BASE "dir/link2/", -1, gids[0]) == -1);
205 ASSERT (errno == ENOTDIR);
206 ASSERT (stat (BASE "dir/file", &st2) == 0);
207 ASSERT (st1.st_uid == st2.st_uid);
208 ASSERT (st1.st_gid == st2.st_gid);
209 ASSERT (lstat (BASE "dir/link", &st2) == 0);
210 ASSERT (st1.st_uid == st2.st_uid);
211 ASSERT (st1.st_gid == st2.st_gid);
212 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
213 ASSERT (st1.st_uid == st2.st_uid);
214 ASSERT (st1.st_gid == st2.st_gid);
216 ASSERT (func (BASE "dir/link2", -1, gids[0]) == 0);
217 ASSERT (stat (BASE "dir/file", &st2) == 0);
218 ASSERT (st1.st_uid == st2.st_uid);
219 ASSERT (gids[0] == st2.st_gid);
220 ASSERT (lstat (BASE "dir/link", &st2) == 0);
221 ASSERT (st1.st_uid == st2.st_uid);
222 ASSERT (st1.st_gid == st2.st_gid);
223 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
224 ASSERT (st1.st_uid == st2.st_uid);
225 ASSERT (st1.st_gid == st2.st_gid);
231 ASSERT (stat (BASE "dir/file", &st1) == 0);
232 ASSERT (lstat (BASE "dir/link", &l1) == 0);
233 ASSERT (lstat (BASE "dir/link2", &l2) == 0);
237 ASSERT (func (BASE "dir/link2/", -1, st1.st_gid) == -1);
238 ASSERT (errno == ENOTDIR);
239 ASSERT (stat (BASE "dir/file", &st2) == 0);
240 ASSERT (st1.st_ctime == st2.st_ctime);
241 ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
242 ASSERT (lstat (BASE "dir/link", &st2) == 0);
243 ASSERT (l1.st_ctime == st2.st_ctime);
244 ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
245 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
246 ASSERT (l2.st_ctime == st2.st_ctime);
247 ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
249 ASSERT (func (BASE "dir/link2", -1, gids[0]) == 0);
250 ASSERT (stat (BASE "dir/file", &st2) == 0);
251 ASSERT (st1.st_ctime < st2.st_ctime
252 || (st1.st_ctime == st2.st_ctime
253 && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
254 ASSERT (lstat (BASE "dir/link", &st2) == 0);
255 ASSERT (l1.st_ctime == st2.st_ctime);
256 ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
257 ASSERT (lstat (BASE "dir/link2", &st2) == 0);
258 ASSERT (l2.st_ctime == st2.st_ctime);
259 ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
264 ASSERT (unlink (BASE "dir/file") == 0);
265 ASSERT (unlink (BASE "dir/link") == 0);
266 ASSERT (unlink (BASE "dir/link2") == 0);
267 ASSERT (rmdir (BASE "dir") == 0);