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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
c270684a RC |
2 | |
3 | #include <unistd.h> | |
4 | ||
5 | #include "alloc-util.h" | |
c270684a RC |
6 | #include "fd-util.h" |
7 | #include "fs-util.h" | |
1ed34d75 | 8 | #include "id128-util.h" |
c270684a RC |
9 | #include "macro.h" |
10 | #include "mkdir.h" | |
d944dc95 | 11 | #include "path-util.h" |
c270684a | 12 | #include "rm-rf.h" |
1ed34d75 | 13 | #include "stdio-util.h" |
c270684a RC |
14 | #include "string-util.h" |
15 | #include "strv.h" | |
27964854 | 16 | #include "tests.h" |
e4de7287 | 17 | #include "tmpfile-util.h" |
c1447be4 | 18 | #include "umask-util.h" |
f14f1806 | 19 | #include "user-util.h" |
c270684a | 20 | #include "util.h" |
9590065f | 21 | #include "virt.h" |
c270684a | 22 | |
27964854 ZJS |
23 | static const char *arg_test_dir = NULL; |
24 | ||
d944dc95 | 25 | static void test_chase_symlinks(void) { |
c9825701 | 26 | _cleanup_free_ char *result = NULL; |
27964854 | 27 | char *temp; |
b12d25a8 | 28 | const char *top, *p, *pslash, *q, *qslash; |
1f56e4ce | 29 | struct stat st; |
1ed34d75 | 30 | int r, pfd; |
d944dc95 | 31 | |
27964854 ZJS |
32 | log_info("/* %s */", __func__); |
33 | ||
34 | temp = strjoina(arg_test_dir ?: "/tmp", "/test-chase.XXXXXX"); | |
d944dc95 LP |
35 | assert_se(mkdtemp(temp)); |
36 | ||
37 | top = strjoina(temp, "/top"); | |
38 | assert_se(mkdir(top, 0700) >= 0); | |
39 | ||
40 | p = strjoina(top, "/dot"); | |
27964854 ZJS |
41 | if (symlink(".", p) < 0) { |
42 | assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM)); | |
43 | log_tests_skipped_errno(errno, "symlink() not possible"); | |
44 | goto cleanup; | |
45 | }; | |
d944dc95 LP |
46 | |
47 | p = strjoina(top, "/dotdot"); | |
48 | assert_se(symlink("..", p) >= 0); | |
49 | ||
50 | p = strjoina(top, "/dotdota"); | |
51 | assert_se(symlink("../a", p) >= 0); | |
52 | ||
53 | p = strjoina(temp, "/a"); | |
54 | assert_se(symlink("b", p) >= 0); | |
55 | ||
56 | p = strjoina(temp, "/b"); | |
57 | assert_se(symlink("/usr", p) >= 0); | |
58 | ||
59 | p = strjoina(temp, "/start"); | |
60 | assert_se(symlink("top/dot/dotdota", p) >= 0); | |
61 | ||
df878e68 ZJS |
62 | /* Paths that use symlinks underneath the "root" */ |
63 | ||
a5648b80 | 64 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
a9fb0867 | 65 | assert_se(r > 0); |
d944dc95 | 66 | assert_se(path_equal(result, "/usr")); |
b12d25a8 | 67 | result = mfree(result); |
d944dc95 | 68 | |
b12d25a8 | 69 | pslash = strjoina(p, "/"); |
a5648b80 | 70 | r = chase_symlinks(pslash, NULL, 0, &result, NULL); |
b12d25a8 ZJS |
71 | assert_se(r > 0); |
72 | assert_se(path_equal(result, "/usr/")); | |
d944dc95 | 73 | result = mfree(result); |
b12d25a8 | 74 | |
a5648b80 | 75 | r = chase_symlinks(p, temp, 0, &result, NULL); |
d944dc95 LP |
76 | assert_se(r == -ENOENT); |
77 | ||
a5648b80 | 78 | r = chase_symlinks(pslash, temp, 0, &result, NULL); |
b12d25a8 ZJS |
79 | assert_se(r == -ENOENT); |
80 | ||
d944dc95 | 81 | q = strjoina(temp, "/usr"); |
a9fb0867 | 82 | |
a5648b80 | 83 | r = chase_symlinks(p, temp, CHASE_NONEXISTENT, &result, NULL); |
a9fb0867 LP |
84 | assert_se(r == 0); |
85 | assert_se(path_equal(result, q)); | |
b12d25a8 | 86 | result = mfree(result); |
a9fb0867 | 87 | |
b12d25a8 | 88 | qslash = strjoina(q, "/"); |
d944dc95 | 89 | |
a5648b80 | 90 | r = chase_symlinks(pslash, temp, CHASE_NONEXISTENT, &result, NULL); |
b12d25a8 ZJS |
91 | assert_se(r == 0); |
92 | assert_se(path_equal(result, qslash)); | |
f4b85a0f | 93 | result = mfree(result); |
b12d25a8 ZJS |
94 | |
95 | assert_se(mkdir(q, 0700) >= 0); | |
96 | ||
a5648b80 | 97 | r = chase_symlinks(p, temp, 0, &result, NULL); |
a9fb0867 | 98 | assert_se(r > 0); |
d944dc95 | 99 | assert_se(path_equal(result, q)); |
b12d25a8 ZJS |
100 | result = mfree(result); |
101 | ||
a5648b80 | 102 | r = chase_symlinks(pslash, temp, 0, &result, NULL); |
b12d25a8 ZJS |
103 | assert_se(r > 0); |
104 | assert_se(path_equal(result, qslash)); | |
105 | result = mfree(result); | |
d944dc95 LP |
106 | |
107 | p = strjoina(temp, "/slash"); | |
108 | assert_se(symlink("/", p) >= 0); | |
109 | ||
a5648b80 | 110 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
a9fb0867 | 111 | assert_se(r > 0); |
d944dc95 | 112 | assert_se(path_equal(result, "/")); |
d944dc95 | 113 | result = mfree(result); |
b12d25a8 | 114 | |
a5648b80 | 115 | r = chase_symlinks(p, temp, 0, &result, NULL); |
a9fb0867 | 116 | assert_se(r > 0); |
d944dc95 | 117 | assert_se(path_equal(result, temp)); |
b12d25a8 | 118 | result = mfree(result); |
d944dc95 | 119 | |
df878e68 ZJS |
120 | /* Paths that would "escape" outside of the "root" */ |
121 | ||
122 | p = strjoina(temp, "/6dots"); | |
123 | assert_se(symlink("../../..", p) >= 0); | |
124 | ||
a5648b80 | 125 | r = chase_symlinks(p, temp, 0, &result, NULL); |
a9fb0867 | 126 | assert_se(r > 0 && path_equal(result, temp)); |
b12d25a8 | 127 | result = mfree(result); |
df878e68 ZJS |
128 | |
129 | p = strjoina(temp, "/6dotsusr"); | |
130 | assert_se(symlink("../../../usr", p) >= 0); | |
131 | ||
a5648b80 | 132 | r = chase_symlinks(p, temp, 0, &result, NULL); |
a9fb0867 | 133 | assert_se(r > 0 && path_equal(result, q)); |
b12d25a8 | 134 | result = mfree(result); |
df878e68 ZJS |
135 | |
136 | p = strjoina(temp, "/top/8dotsusr"); | |
137 | assert_se(symlink("../../../../usr", p) >= 0); | |
138 | ||
a5648b80 | 139 | r = chase_symlinks(p, temp, 0, &result, NULL); |
a9fb0867 | 140 | assert_se(r > 0 && path_equal(result, q)); |
b12d25a8 | 141 | result = mfree(result); |
df878e68 ZJS |
142 | |
143 | /* Paths that contain repeated slashes */ | |
144 | ||
d944dc95 LP |
145 | p = strjoina(temp, "/slashslash"); |
146 | assert_se(symlink("///usr///", p) >= 0); | |
147 | ||
a5648b80 | 148 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
a9fb0867 | 149 | assert_se(r > 0); |
d944dc95 | 150 | assert_se(path_equal(result, "/usr")); |
3c7b4ebf | 151 | assert_se(streq(result, "/usr")); /* we guarantee that we drop redundant slashes */ |
d944dc95 | 152 | result = mfree(result); |
b12d25a8 | 153 | |
a5648b80 | 154 | r = chase_symlinks(p, temp, 0, &result, NULL); |
a9fb0867 | 155 | assert_se(r > 0); |
d944dc95 | 156 | assert_se(path_equal(result, q)); |
b12d25a8 | 157 | result = mfree(result); |
d944dc95 | 158 | |
2a2fe6ed DM |
159 | /* Paths underneath the "root" with different UIDs while using CHASE_SAFE */ |
160 | ||
161 | if (geteuid() == 0) { | |
162 | p = strjoina(temp, "/user"); | |
163 | assert_se(mkdir(p, 0755) >= 0); | |
164 | assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0); | |
165 | ||
166 | q = strjoina(temp, "/user/root"); | |
167 | assert_se(mkdir(q, 0755) >= 0); | |
168 | ||
169 | p = strjoina(q, "/link"); | |
170 | assert_se(symlink("/", p) >= 0); | |
171 | ||
172 | /* Fail when user-owned directories contain root-owned subdirectories. */ | |
a5648b80 | 173 | r = chase_symlinks(p, temp, CHASE_SAFE, &result, NULL); |
2a2fe6ed DM |
174 | assert_se(r == -ENOLINK); |
175 | result = mfree(result); | |
176 | ||
177 | /* Allow this when the user-owned directories are all in the "root". */ | |
a5648b80 | 178 | r = chase_symlinks(p, q, CHASE_SAFE, &result, NULL); |
2a2fe6ed DM |
179 | assert_se(r > 0); |
180 | result = mfree(result); | |
181 | } | |
182 | ||
df878e68 ZJS |
183 | /* Paths using . */ |
184 | ||
a5648b80 | 185 | r = chase_symlinks("/etc/./.././", NULL, 0, &result, NULL); |
a9fb0867 | 186 | assert_se(r > 0); |
d944dc95 | 187 | assert_se(path_equal(result, "/")); |
d944dc95 | 188 | result = mfree(result); |
b12d25a8 | 189 | |
a5648b80 | 190 | r = chase_symlinks("/etc/./.././", "/etc", 0, &result, NULL); |
a9fb0867 | 191 | assert_se(r > 0 && path_equal(result, "/etc")); |
d944dc95 | 192 | result = mfree(result); |
b12d25a8 | 193 | |
a5648b80 | 194 | r = chase_symlinks("/../.././//../../etc", NULL, 0, &result, NULL); |
95f35ccc YW |
195 | assert_se(r > 0); |
196 | assert_se(streq(result, "/etc")); | |
197 | result = mfree(result); | |
198 | ||
a5648b80 | 199 | r = chase_symlinks("/../.././//../../test-chase.fsldajfl", NULL, CHASE_NONEXISTENT, &result, NULL); |
95f35ccc YW |
200 | assert_se(r == 0); |
201 | assert_se(streq(result, "/test-chase.fsldajfl")); | |
202 | result = mfree(result); | |
203 | ||
a5648b80 | 204 | r = chase_symlinks("/../.././//../../etc", "/", CHASE_PREFIX_ROOT, &result, NULL); |
95f35ccc YW |
205 | assert_se(r > 0); |
206 | assert_se(streq(result, "/etc")); | |
207 | result = mfree(result); | |
208 | ||
a5648b80 | 209 | r = chase_symlinks("/../.././//../../test-chase.fsldajfl", "/", CHASE_PREFIX_ROOT|CHASE_NONEXISTENT, &result, NULL); |
95f35ccc YW |
210 | assert_se(r == 0); |
211 | assert_se(streq(result, "/test-chase.fsldajfl")); | |
212 | result = mfree(result); | |
213 | ||
a5648b80 | 214 | r = chase_symlinks("/etc/machine-id/foo", NULL, 0, &result, NULL); |
d944dc95 | 215 | assert_se(r == -ENOTDIR); |
b12d25a8 | 216 | result = mfree(result); |
d944dc95 | 217 | |
df878e68 ZJS |
218 | /* Path that loops back to self */ |
219 | ||
d944dc95 LP |
220 | p = strjoina(temp, "/recursive-symlink"); |
221 | assert_se(symlink("recursive-symlink", p) >= 0); | |
a5648b80 | 222 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
d944dc95 LP |
223 | assert_se(r == -ELOOP); |
224 | ||
a9fb0867 LP |
225 | /* Path which doesn't exist */ |
226 | ||
227 | p = strjoina(temp, "/idontexist"); | |
a5648b80 | 228 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
a9fb0867 LP |
229 | assert_se(r == -ENOENT); |
230 | ||
a5648b80 | 231 | r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL); |
a9fb0867 LP |
232 | assert_se(r == 0); |
233 | assert_se(path_equal(result, p)); | |
234 | result = mfree(result); | |
235 | ||
236 | p = strjoina(temp, "/idontexist/meneither"); | |
a5648b80 | 237 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
a9fb0867 LP |
238 | assert_se(r == -ENOENT); |
239 | ||
a5648b80 | 240 | r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL); |
a9fb0867 LP |
241 | assert_se(r == 0); |
242 | assert_se(path_equal(result, p)); | |
243 | result = mfree(result); | |
244 | ||
245 | /* Path which doesn't exist, but contains weird stuff */ | |
246 | ||
247 | p = strjoina(temp, "/idontexist/.."); | |
a5648b80 | 248 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
a9fb0867 LP |
249 | assert_se(r == -ENOENT); |
250 | ||
a5648b80 | 251 | r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result, NULL); |
a9fb0867 LP |
252 | assert_se(r == -ENOENT); |
253 | ||
877777d7 CCW |
254 | p = strjoina(temp, "/target"); |
255 | q = strjoina(temp, "/top"); | |
256 | assert_se(symlink(q, p) >= 0); | |
257 | p = strjoina(temp, "/target/idontexist"); | |
a5648b80 | 258 | r = chase_symlinks(p, NULL, 0, &result, NULL); |
877777d7 CCW |
259 | assert_se(r == -ENOENT); |
260 | ||
f14f1806 LP |
261 | if (geteuid() == 0) { |
262 | p = strjoina(temp, "/priv1"); | |
263 | assert_se(mkdir(p, 0755) >= 0); | |
264 | ||
265 | q = strjoina(p, "/priv2"); | |
266 | assert_se(mkdir(q, 0755) >= 0); | |
267 | ||
a5648b80 | 268 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); |
f14f1806 LP |
269 | |
270 | assert_se(chown(q, UID_NOBODY, GID_NOBODY) >= 0); | |
a5648b80 | 271 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); |
f14f1806 LP |
272 | |
273 | assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0); | |
a5648b80 | 274 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); |
f14f1806 LP |
275 | |
276 | assert_se(chown(q, 0, 0) >= 0); | |
a5648b80 | 277 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK); |
f14f1806 LP |
278 | |
279 | assert_se(rmdir(q) >= 0); | |
280 | assert_se(symlink("/etc/passwd", q) >= 0); | |
a5648b80 | 281 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) == -ENOLINK); |
f14f1806 LP |
282 | |
283 | assert_se(chown(p, 0, 0) >= 0); | |
a5648b80 | 284 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL, NULL) >= 0); |
f14f1806 LP |
285 | } |
286 | ||
1ed34d75 LP |
287 | p = strjoina(temp, "/machine-id-test"); |
288 | assert_se(symlink("/usr/../etc/./machine-id", p) >= 0); | |
289 | ||
a5648b80 ZJS |
290 | r = chase_symlinks(p, NULL, 0, NULL, &pfd); |
291 | if (r != -ENOENT) { | |
1ed34d75 LP |
292 | _cleanup_close_ int fd = -1; |
293 | sd_id128_t a, b; | |
294 | ||
295 | assert_se(pfd >= 0); | |
296 | ||
f2324783 | 297 | fd = fd_reopen(pfd, O_RDONLY|O_CLOEXEC); |
1ed34d75 | 298 | assert_se(fd >= 0); |
1ed34d75 LP |
299 | safe_close(pfd); |
300 | ||
301 | assert_se(id128_read_fd(fd, ID128_PLAIN, &a) >= 0); | |
302 | assert_se(sd_id128_get_machine(&b) >= 0); | |
303 | assert_se(sd_id128_equal(a, b)); | |
304 | } | |
305 | ||
1f56e4ce FB |
306 | /* Test CHASE_NOFOLLOW */ |
307 | ||
308 | p = strjoina(temp, "/target"); | |
309 | q = strjoina(temp, "/symlink"); | |
310 | assert_se(symlink(p, q) >= 0); | |
a5648b80 ZJS |
311 | r = chase_symlinks(q, NULL, CHASE_NOFOLLOW, &result, &pfd); |
312 | assert_se(r >= 0); | |
313 | assert_se(pfd >= 0); | |
1f56e4ce FB |
314 | assert_se(path_equal(result, q)); |
315 | assert_se(fstat(pfd, &st) >= 0); | |
316 | assert_se(S_ISLNK(st.st_mode)); | |
317 | result = mfree(result); | |
318 | ||
319 | /* s1 -> s2 -> nonexistent */ | |
320 | q = strjoina(temp, "/s1"); | |
321 | assert_se(symlink("s2", q) >= 0); | |
322 | p = strjoina(temp, "/s2"); | |
323 | assert_se(symlink("nonexistent", p) >= 0); | |
a5648b80 ZJS |
324 | r = chase_symlinks(q, NULL, CHASE_NOFOLLOW, &result, &pfd); |
325 | assert_se(r >= 0); | |
326 | assert_se(pfd >= 0); | |
1f56e4ce FB |
327 | assert_se(path_equal(result, q)); |
328 | assert_se(fstat(pfd, &st) >= 0); | |
329 | assert_se(S_ISLNK(st.st_mode)); | |
330 | result = mfree(result); | |
331 | ||
49eb3659 LP |
332 | /* Test CHASE_ONE */ |
333 | ||
334 | p = strjoina(temp, "/start"); | |
a5648b80 | 335 | r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL); |
49eb3659 LP |
336 | assert_se(r == 0); |
337 | p = strjoina(temp, "/top/dot/dotdota"); | |
338 | assert_se(streq(p, result)); | |
339 | result = mfree(result); | |
340 | ||
a5648b80 | 341 | r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL); |
49eb3659 LP |
342 | assert_se(r == 0); |
343 | p = strjoina(temp, "/top/./dotdota"); | |
344 | assert_se(streq(p, result)); | |
345 | result = mfree(result); | |
346 | ||
a5648b80 | 347 | r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL); |
49eb3659 LP |
348 | assert_se(r == 0); |
349 | p = strjoina(temp, "/top/../a"); | |
350 | assert_se(streq(p, result)); | |
351 | result = mfree(result); | |
352 | ||
a5648b80 | 353 | r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL); |
49eb3659 LP |
354 | assert_se(r == 0); |
355 | p = strjoina(temp, "/a"); | |
356 | assert_se(streq(p, result)); | |
357 | result = mfree(result); | |
358 | ||
a5648b80 | 359 | r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL); |
49eb3659 LP |
360 | assert_se(r == 0); |
361 | p = strjoina(temp, "/b"); | |
362 | assert_se(streq(p, result)); | |
363 | result = mfree(result); | |
364 | ||
a5648b80 | 365 | r = chase_symlinks(p, NULL, CHASE_STEP, &result, NULL); |
49eb3659 LP |
366 | assert_se(r == 0); |
367 | assert_se(streq("/usr", result)); | |
368 | result = mfree(result); | |
369 | ||
a5648b80 | 370 | r = chase_symlinks("/usr", NULL, CHASE_STEP, &result, NULL); |
49eb3659 LP |
371 | assert_se(r > 0); |
372 | assert_se(streq("/usr", result)); | |
373 | result = mfree(result); | |
374 | ||
6efb1257 LP |
375 | /* Make sure that symlinks in the "root" path are not resolved, but those below are */ |
376 | p = strjoina("/etc/..", temp, "/self"); | |
377 | assert_se(symlink(".", p) >= 0); | |
378 | q = strjoina(p, "/top/dot/dotdota"); | |
379 | r = chase_symlinks(q, p, 0, &result, NULL); | |
380 | assert_se(r > 0); | |
381 | assert_se(path_equal(path_startswith(result, p), "usr")); | |
382 | result = mfree(result); | |
383 | ||
27964854 | 384 | cleanup: |
d944dc95 LP |
385 | assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0); |
386 | } | |
387 | ||
c270684a | 388 | static void test_unlink_noerrno(void) { |
27964854 | 389 | char *name; |
c270684a RC |
390 | int fd; |
391 | ||
27964854 ZJS |
392 | log_info("/* %s */", __func__); |
393 | ||
394 | name = strjoina(arg_test_dir ?: "/tmp", "/test-close_nointr.XXXXXX"); | |
646853bd | 395 | fd = mkostemp_safe(name); |
c270684a RC |
396 | assert_se(fd >= 0); |
397 | assert_se(close_nointr(fd) >= 0); | |
398 | ||
399 | { | |
400 | PROTECT_ERRNO; | |
840f606d | 401 | errno = 42; |
c270684a | 402 | assert_se(unlink_noerrno(name) >= 0); |
840f606d | 403 | assert_se(errno == 42); |
c270684a | 404 | assert_se(unlink_noerrno(name) < 0); |
840f606d | 405 | assert_se(errno == 42); |
c270684a RC |
406 | } |
407 | } | |
408 | ||
409 | static void test_readlink_and_make_absolute(void) { | |
27964854 ZJS |
410 | const char *tempdir, *name, *name2, *name_alias; |
411 | _cleanup_free_ char *r1 = NULL, *r2 = NULL, *pwd = NULL; | |
412 | ||
413 | log_info("/* %s */", __func__); | |
414 | ||
415 | tempdir = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute"); | |
416 | name = strjoina(tempdir, "/original"); | |
417 | name2 = "test-readlink_and_make_absolute/original"; | |
418 | name_alias = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute-alias"); | |
c270684a | 419 | |
37c1d5e9 | 420 | assert_se(mkdir_safe(tempdir, 0755, getuid(), getgid(), MKDIR_WARN_MODE) >= 0); |
c270684a RC |
421 | assert_se(touch(name) >= 0); |
422 | ||
27964854 ZJS |
423 | if (symlink(name, name_alias) < 0) { |
424 | assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM)); | |
425 | log_tests_skipped_errno(errno, "symlink() not possible"); | |
426 | } else { | |
427 | assert_se(readlink_and_make_absolute(name_alias, &r1) >= 0); | |
428 | assert_se(streq(r1, name)); | |
429 | assert_se(unlink(name_alias) >= 0); | |
c270684a | 430 | |
27964854 | 431 | assert_se(safe_getcwd(&pwd) >= 0); |
cd76d4c2 | 432 | |
27964854 ZJS |
433 | assert_se(chdir(tempdir) >= 0); |
434 | assert_se(symlink(name2, name_alias) >= 0); | |
435 | assert_se(readlink_and_make_absolute(name_alias, &r2) >= 0); | |
436 | assert_se(streq(r2, name)); | |
437 | assert_se(unlink(name_alias) >= 0); | |
c270684a | 438 | |
27964854 ZJS |
439 | assert_se(chdir(pwd) >= 0); |
440 | } | |
cd76d4c2 | 441 | |
c270684a RC |
442 | assert_se(rm_rf(tempdir, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0); |
443 | } | |
444 | ||
445 | static void test_get_files_in_directory(void) { | |
446 | _cleanup_strv_free_ char **l = NULL, **t = NULL; | |
447 | ||
27964854 | 448 | assert_se(get_files_in_directory(arg_test_dir ?: "/tmp", &l) >= 0); |
c270684a RC |
449 | assert_se(get_files_in_directory(".", &t) >= 0); |
450 | assert_se(get_files_in_directory(".", NULL) >= 0); | |
451 | } | |
452 | ||
34a8f081 | 453 | static void test_var_tmp(void) { |
4245eb50 | 454 | _cleanup_free_ char *tmpdir_backup = NULL, *temp_backup = NULL, *tmp_backup = NULL; |
992e8f22 | 455 | const char *tmp_dir = NULL, *t; |
34a8f081 | 456 | |
27964854 ZJS |
457 | log_info("/* %s */", __func__); |
458 | ||
992e8f22 LP |
459 | t = getenv("TMPDIR"); |
460 | if (t) { | |
461 | tmpdir_backup = strdup(t); | |
462 | assert_se(tmpdir_backup); | |
463 | } | |
34a8f081 | 464 | |
4245eb50 MAP |
465 | t = getenv("TEMP"); |
466 | if (t) { | |
467 | temp_backup = strdup(t); | |
468 | assert_se(temp_backup); | |
469 | } | |
470 | ||
471 | t = getenv("TMP"); | |
472 | if (t) { | |
473 | tmp_backup = strdup(t); | |
474 | assert_se(tmp_backup); | |
475 | } | |
476 | ||
85e55d14 YW |
477 | assert_se(unsetenv("TMPDIR") >= 0); |
478 | assert_se(unsetenv("TEMP") >= 0); | |
479 | assert_se(unsetenv("TMP") >= 0); | |
34a8f081 | 480 | |
992e8f22 LP |
481 | assert_se(var_tmp_dir(&tmp_dir) >= 0); |
482 | assert_se(streq(tmp_dir, "/var/tmp")); | |
34a8f081 | 483 | |
992e8f22 LP |
484 | assert_se(setenv("TMPDIR", "/tmp", true) >= 0); |
485 | assert_se(streq(getenv("TMPDIR"), "/tmp")); | |
34a8f081 | 486 | |
992e8f22 LP |
487 | assert_se(var_tmp_dir(&tmp_dir) >= 0); |
488 | assert_se(streq(tmp_dir, "/tmp")); | |
34a8f081 | 489 | |
992e8f22 LP |
490 | assert_se(setenv("TMPDIR", "/88_does_not_exist_88", true) >= 0); |
491 | assert_se(streq(getenv("TMPDIR"), "/88_does_not_exist_88")); | |
34a8f081 | 492 | |
992e8f22 LP |
493 | assert_se(var_tmp_dir(&tmp_dir) >= 0); |
494 | assert_se(streq(tmp_dir, "/var/tmp")); | |
34a8f081 | 495 | |
992e8f22 LP |
496 | if (tmpdir_backup) { |
497 | assert_se(setenv("TMPDIR", tmpdir_backup, true) >= 0); | |
498 | assert_se(streq(getenv("TMPDIR"), tmpdir_backup)); | |
34a8f081 | 499 | } |
4245eb50 MAP |
500 | |
501 | if (temp_backup) { | |
502 | assert_se(setenv("TEMP", temp_backup, true) >= 0); | |
503 | assert_se(streq(getenv("TEMP"), temp_backup)); | |
504 | } | |
505 | ||
506 | if (tmp_backup) { | |
507 | assert_se(setenv("TMP", tmp_backup, true) >= 0); | |
508 | assert_se(streq(getenv("TMP"), tmp_backup)); | |
509 | } | |
34a8f081 OW |
510 | } |
511 | ||
49bfc877 | 512 | static void test_dot_or_dot_dot(void) { |
27964854 ZJS |
513 | log_info("/* %s */", __func__); |
514 | ||
49bfc877 LP |
515 | assert_se(!dot_or_dot_dot(NULL)); |
516 | assert_se(!dot_or_dot_dot("")); | |
517 | assert_se(!dot_or_dot_dot("xxx")); | |
518 | assert_se(dot_or_dot_dot(".")); | |
519 | assert_se(dot_or_dot_dot("..")); | |
520 | assert_se(!dot_or_dot_dot(".foo")); | |
521 | assert_se(!dot_or_dot_dot("..foo")); | |
522 | } | |
523 | ||
57a4359e LP |
524 | static void test_access_fd(void) { |
525 | _cleanup_(rmdir_and_freep) char *p = NULL; | |
526 | _cleanup_close_ int fd = -1; | |
27964854 | 527 | const char *a; |
57a4359e | 528 | |
27964854 ZJS |
529 | log_info("/* %s */", __func__); |
530 | ||
531 | a = strjoina(arg_test_dir ?: "/tmp", "/access-fd.XXXXXX"); | |
532 | assert_se(mkdtemp_malloc(a, &p) >= 0); | |
57a4359e LP |
533 | |
534 | fd = open(p, O_RDONLY|O_DIRECTORY|O_CLOEXEC); | |
535 | assert_se(fd >= 0); | |
536 | ||
537 | assert_se(access_fd(fd, R_OK) >= 0); | |
538 | assert_se(access_fd(fd, F_OK) >= 0); | |
539 | assert_se(access_fd(fd, W_OK) >= 0); | |
540 | ||
541 | assert_se(fchmod(fd, 0000) >= 0); | |
542 | ||
543 | assert_se(access_fd(fd, F_OK) >= 0); | |
544 | ||
545 | if (geteuid() == 0) { | |
546 | assert_se(access_fd(fd, R_OK) >= 0); | |
547 | assert_se(access_fd(fd, W_OK) >= 0); | |
548 | } else { | |
549 | assert_se(access_fd(fd, R_OK) == -EACCES); | |
550 | assert_se(access_fd(fd, W_OK) == -EACCES); | |
551 | } | |
552 | } | |
553 | ||
9e3fa6e8 LP |
554 | static void test_touch_file(void) { |
555 | uid_t test_uid, test_gid; | |
556 | _cleanup_(rm_rf_physical_and_freep) char *p = NULL; | |
557 | struct stat st; | |
558 | const char *a; | |
559 | usec_t test_mtime; | |
9590065f | 560 | int r; |
9e3fa6e8 | 561 | |
27964854 ZJS |
562 | log_info("/* %s */", __func__); |
563 | ||
9e3fa6e8 LP |
564 | test_uid = geteuid() == 0 ? 65534 : getuid(); |
565 | test_gid = geteuid() == 0 ? 65534 : getgid(); | |
566 | ||
567 | test_mtime = usec_sub_unsigned(now(CLOCK_REALTIME), USEC_PER_WEEK); | |
568 | ||
27964854 ZJS |
569 | a = strjoina(arg_test_dir ?: "/dev/shm", "/touch-file-XXXXXX"); |
570 | assert_se(mkdtemp_malloc(a, &p) >= 0); | |
9e3fa6e8 LP |
571 | |
572 | a = strjoina(p, "/regular"); | |
27964854 ZJS |
573 | r = touch_file(a, false, test_mtime, test_uid, test_gid, 0640); |
574 | if (r < 0) { | |
575 | assert_se(IN_SET(r, -EINVAL, -ENOSYS, -ENOTTY, -EPERM)); | |
576 | log_tests_skipped_errno(errno, "touch_file() not possible"); | |
577 | return; | |
578 | } | |
579 | ||
9e3fa6e8 LP |
580 | assert_se(lstat(a, &st) >= 0); |
581 | assert_se(st.st_uid == test_uid); | |
582 | assert_se(st.st_gid == test_gid); | |
583 | assert_se(S_ISREG(st.st_mode)); | |
584 | assert_se((st.st_mode & 0777) == 0640); | |
585 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
586 | ||
587 | a = strjoina(p, "/dir"); | |
588 | assert_se(mkdir(a, 0775) >= 0); | |
589 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
590 | assert_se(lstat(a, &st) >= 0); | |
591 | assert_se(st.st_uid == test_uid); | |
592 | assert_se(st.st_gid == test_gid); | |
593 | assert_se(S_ISDIR(st.st_mode)); | |
594 | assert_se((st.st_mode & 0777) == 0640); | |
595 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
596 | ||
597 | a = strjoina(p, "/fifo"); | |
598 | assert_se(mkfifo(a, 0775) >= 0); | |
599 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
600 | assert_se(lstat(a, &st) >= 0); | |
601 | assert_se(st.st_uid == test_uid); | |
602 | assert_se(st.st_gid == test_gid); | |
603 | assert_se(S_ISFIFO(st.st_mode)); | |
604 | assert_se((st.st_mode & 0777) == 0640); | |
605 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
606 | ||
607 | a = strjoina(p, "/sock"); | |
608 | assert_se(mknod(a, 0775 | S_IFSOCK, 0) >= 0); | |
609 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
610 | assert_se(lstat(a, &st) >= 0); | |
611 | assert_se(st.st_uid == test_uid); | |
612 | assert_se(st.st_gid == test_gid); | |
613 | assert_se(S_ISSOCK(st.st_mode)); | |
614 | assert_se((st.st_mode & 0777) == 0640); | |
615 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
616 | ||
617 | if (geteuid() == 0) { | |
618 | a = strjoina(p, "/cdev"); | |
9590065f YW |
619 | r = mknod(a, 0775 | S_IFCHR, makedev(0, 0)); |
620 | if (r < 0 && errno == EPERM && detect_container() > 0) { | |
621 | log_notice("Running in unprivileged container? Skipping remaining tests in %s", __func__); | |
622 | return; | |
623 | } | |
624 | assert_se(r >= 0); | |
9e3fa6e8 LP |
625 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); |
626 | assert_se(lstat(a, &st) >= 0); | |
627 | assert_se(st.st_uid == test_uid); | |
628 | assert_se(st.st_gid == test_gid); | |
629 | assert_se(S_ISCHR(st.st_mode)); | |
630 | assert_se((st.st_mode & 0777) == 0640); | |
631 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
632 | ||
633 | a = strjoina(p, "/bdev"); | |
634 | assert_se(mknod(a, 0775 | S_IFBLK, makedev(0, 0)) >= 0); | |
635 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
636 | assert_se(lstat(a, &st) >= 0); | |
637 | assert_se(st.st_uid == test_uid); | |
638 | assert_se(st.st_gid == test_gid); | |
639 | assert_se(S_ISBLK(st.st_mode)); | |
640 | assert_se((st.st_mode & 0777) == 0640); | |
641 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
642 | } | |
643 | ||
644 | a = strjoina(p, "/lnk"); | |
645 | assert_se(symlink("target", a) >= 0); | |
646 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
647 | assert_se(lstat(a, &st) >= 0); | |
648 | assert_se(st.st_uid == test_uid); | |
649 | assert_se(st.st_gid == test_gid); | |
650 | assert_se(S_ISLNK(st.st_mode)); | |
9e3fa6e8 LP |
651 | assert_se(timespec_load(&st.st_mtim) == test_mtime); |
652 | } | |
653 | ||
43767d9d LP |
654 | static void test_unlinkat_deallocate(void) { |
655 | _cleanup_free_ char *p = NULL; | |
656 | _cleanup_close_ int fd = -1; | |
657 | struct stat st; | |
658 | ||
27964854 ZJS |
659 | log_info("/* %s */", __func__); |
660 | ||
661 | assert_se(tempfn_random_child(arg_test_dir, "unlink-deallocation", &p) >= 0); | |
43767d9d LP |
662 | |
663 | fd = open(p, O_WRONLY|O_CLOEXEC|O_CREAT|O_EXCL, 0600); | |
664 | assert_se(fd >= 0); | |
665 | ||
666 | assert_se(write(fd, "hallo\n", 6) == 6); | |
667 | ||
668 | assert_se(fstat(fd, &st) >= 0); | |
669 | assert_se(st.st_size == 6); | |
670 | assert_se(st.st_blocks > 0); | |
671 | assert_se(st.st_nlink == 1); | |
672 | ||
673 | assert_se(unlinkat_deallocate(AT_FDCWD, p, 0) >= 0); | |
674 | ||
675 | assert_se(fstat(fd, &st) >= 0); | |
27964854 ZJS |
676 | assert_se(IN_SET(st.st_size, 0, 6)); /* depending on whether hole punching worked the size will be 6 |
677 | (it worked) or 0 (we had to resort to truncation) */ | |
43767d9d LP |
678 | assert_se(st.st_blocks == 0); |
679 | assert_se(st.st_nlink == 0); | |
680 | } | |
681 | ||
11b29a96 LP |
682 | static void test_fsync_directory_of_file(void) { |
683 | _cleanup_close_ int fd = -1; | |
684 | ||
27964854 ZJS |
685 | log_info("/* %s */", __func__); |
686 | ||
687 | fd = open_tmpfile_unlinkable(arg_test_dir, O_RDWR); | |
11b29a96 LP |
688 | assert_se(fd >= 0); |
689 | ||
690 | assert_se(fsync_directory_of_file(fd) >= 0); | |
691 | } | |
692 | ||
4a5d7761 | 693 | static void test_rename_noreplace(void) { |
7158b4b3 | 694 | static const char* const table[] = { |
4a5d7761 LP |
695 | "/reg", |
696 | "/dir", | |
697 | "/fifo", | |
698 | "/socket", | |
699 | "/symlink", | |
700 | NULL | |
701 | }; | |
702 | ||
703 | _cleanup_(rm_rf_physical_and_freep) char *z = NULL; | |
27964854 | 704 | const char *j = NULL; |
4a5d7761 LP |
705 | char **a, **b; |
706 | ||
27964854 ZJS |
707 | log_info("/* %s */", __func__); |
708 | ||
709 | if (arg_test_dir) | |
710 | j = strjoina(arg_test_dir, "/testXXXXXX"); | |
7158b4b3 | 711 | assert_se(mkdtemp_malloc(j, &z) >= 0); |
4a5d7761 LP |
712 | |
713 | j = strjoina(z, table[0]); | |
714 | assert_se(touch(j) >= 0); | |
715 | ||
716 | j = strjoina(z, table[1]); | |
717 | assert_se(mkdir(j, 0777) >= 0); | |
718 | ||
719 | j = strjoina(z, table[2]); | |
720 | (void) mkfifo(j, 0777); | |
721 | ||
722 | j = strjoina(z, table[3]); | |
723 | (void) mknod(j, S_IFSOCK | 0777, 0); | |
724 | ||
725 | j = strjoina(z, table[4]); | |
726 | (void) symlink("foobar", j); | |
727 | ||
728 | STRV_FOREACH(a, (char**) table) { | |
729 | _cleanup_free_ char *x = NULL, *y = NULL; | |
730 | ||
731 | x = strjoin(z, *a); | |
732 | assert_se(x); | |
733 | ||
734 | if (access(x, F_OK) < 0) { | |
735 | assert_se(errno == ENOENT); | |
736 | continue; | |
737 | } | |
738 | ||
739 | STRV_FOREACH(b, (char**) table) { | |
b81b9d40 | 740 | _cleanup_free_ char *w = NULL; |
4a5d7761 | 741 | |
b81b9d40 YW |
742 | w = strjoin(w, *b); |
743 | assert_se(w); | |
744 | ||
745 | if (access(w, F_OK) < 0) { | |
4a5d7761 LP |
746 | assert_se(errno == ENOENT); |
747 | continue; | |
748 | } | |
749 | ||
b81b9d40 | 750 | assert_se(rename_noreplace(AT_FDCWD, w, AT_FDCWD, y) == -EEXIST); |
4a5d7761 LP |
751 | } |
752 | ||
753 | y = strjoin(z, "/somethingelse"); | |
754 | assert_se(y); | |
755 | ||
756 | assert_se(rename_noreplace(AT_FDCWD, x, AT_FDCWD, y) >= 0); | |
757 | assert_se(rename_noreplace(AT_FDCWD, y, AT_FDCWD, x) >= 0); | |
758 | } | |
759 | } | |
760 | ||
c1447be4 LP |
761 | static void test_chmod_and_chown(void) { |
762 | _cleanup_(rm_rf_physical_and_freep) char *d = NULL; | |
763 | _unused_ _cleanup_umask_ mode_t u = umask(0000); | |
764 | struct stat st; | |
765 | const char *p; | |
766 | ||
767 | if (geteuid() != 0) | |
768 | return; | |
769 | ||
770 | log_info("/* %s */", __func__); | |
771 | ||
772 | assert_se(mkdtemp_malloc(NULL, &d) >= 0); | |
773 | ||
774 | p = strjoina(d, "/reg"); | |
775 | assert_se(mknod(p, S_IFREG | 0123, 0) >= 0); | |
776 | ||
777 | assert_se(chmod_and_chown(p, S_IFREG | 0321, 1, 2) >= 0); | |
778 | assert_se(chmod_and_chown(p, S_IFDIR | 0555, 3, 4) == -EINVAL); | |
779 | ||
780 | assert_se(lstat(p, &st) >= 0); | |
781 | assert_se(S_ISREG(st.st_mode)); | |
782 | assert_se((st.st_mode & 07777) == 0321); | |
783 | ||
784 | p = strjoina(d, "/dir"); | |
785 | assert_se(mkdir(p, 0123) >= 0); | |
786 | ||
787 | assert_se(chmod_and_chown(p, S_IFDIR | 0321, 1, 2) >= 0); | |
788 | assert_se(chmod_and_chown(p, S_IFREG | 0555, 3, 4) == -EINVAL); | |
789 | ||
790 | assert_se(lstat(p, &st) >= 0); | |
791 | assert_se(S_ISDIR(st.st_mode)); | |
792 | assert_se((st.st_mode & 07777) == 0321); | |
793 | ||
794 | p = strjoina(d, "/lnk"); | |
795 | assert_se(symlink("idontexist", p) >= 0); | |
796 | ||
797 | assert_se(chmod_and_chown(p, S_IFLNK | 0321, 1, 2) >= 0); | |
798 | assert_se(chmod_and_chown(p, S_IFREG | 0555, 3, 4) == -EINVAL); | |
799 | assert_se(chmod_and_chown(p, S_IFDIR | 0555, 3, 4) == -EINVAL); | |
800 | ||
801 | assert_se(lstat(p, &st) >= 0); | |
802 | assert_se(S_ISLNK(st.st_mode)); | |
803 | } | |
804 | ||
c270684a | 805 | int main(int argc, char *argv[]) { |
27964854 ZJS |
806 | test_setup_logging(LOG_INFO); |
807 | ||
808 | arg_test_dir = argv[1]; | |
809 | ||
f2031940 | 810 | test_chase_symlinks(); |
c270684a | 811 | test_unlink_noerrno(); |
496c486f | 812 | test_readlink_and_make_absolute(); |
f2031940 | 813 | test_get_files_in_directory(); |
34a8f081 | 814 | test_var_tmp(); |
49bfc877 | 815 | test_dot_or_dot_dot(); |
57a4359e | 816 | test_access_fd(); |
9e3fa6e8 | 817 | test_touch_file(); |
43767d9d | 818 | test_unlinkat_deallocate(); |
11b29a96 | 819 | test_fsync_directory_of_file(); |
4a5d7761 | 820 | test_rename_noreplace(); |
c1447be4 | 821 | test_chmod_and_chown(); |
c270684a RC |
822 | |
823 | return 0; | |
824 | } |