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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" |
f14f1806 | 18 | #include "user-util.h" |
c270684a | 19 | #include "util.h" |
9590065f | 20 | #include "virt.h" |
c270684a | 21 | |
27964854 ZJS |
22 | static const char *arg_test_dir = NULL; |
23 | ||
d944dc95 | 24 | static void test_chase_symlinks(void) { |
c9825701 | 25 | _cleanup_free_ char *result = NULL; |
27964854 | 26 | char *temp; |
b12d25a8 | 27 | const char *top, *p, *pslash, *q, *qslash; |
1f56e4ce | 28 | struct stat st; |
1ed34d75 | 29 | int r, pfd; |
d944dc95 | 30 | |
27964854 ZJS |
31 | log_info("/* %s */", __func__); |
32 | ||
33 | temp = strjoina(arg_test_dir ?: "/tmp", "/test-chase.XXXXXX"); | |
d944dc95 LP |
34 | assert_se(mkdtemp(temp)); |
35 | ||
36 | top = strjoina(temp, "/top"); | |
37 | assert_se(mkdir(top, 0700) >= 0); | |
38 | ||
39 | p = strjoina(top, "/dot"); | |
27964854 ZJS |
40 | if (symlink(".", p) < 0) { |
41 | assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM)); | |
42 | log_tests_skipped_errno(errno, "symlink() not possible"); | |
43 | goto cleanup; | |
44 | }; | |
d944dc95 LP |
45 | |
46 | p = strjoina(top, "/dotdot"); | |
47 | assert_se(symlink("..", p) >= 0); | |
48 | ||
49 | p = strjoina(top, "/dotdota"); | |
50 | assert_se(symlink("../a", p) >= 0); | |
51 | ||
52 | p = strjoina(temp, "/a"); | |
53 | assert_se(symlink("b", p) >= 0); | |
54 | ||
55 | p = strjoina(temp, "/b"); | |
56 | assert_se(symlink("/usr", p) >= 0); | |
57 | ||
58 | p = strjoina(temp, "/start"); | |
59 | assert_se(symlink("top/dot/dotdota", p) >= 0); | |
60 | ||
df878e68 ZJS |
61 | /* Paths that use symlinks underneath the "root" */ |
62 | ||
c4f4fce7 | 63 | r = chase_symlinks(p, NULL, 0, &result); |
a9fb0867 | 64 | assert_se(r > 0); |
d944dc95 | 65 | assert_se(path_equal(result, "/usr")); |
b12d25a8 | 66 | result = mfree(result); |
d944dc95 | 67 | |
b12d25a8 ZJS |
68 | pslash = strjoina(p, "/"); |
69 | r = chase_symlinks(pslash, NULL, 0, &result); | |
70 | assert_se(r > 0); | |
71 | assert_se(path_equal(result, "/usr/")); | |
d944dc95 | 72 | result = mfree(result); |
b12d25a8 | 73 | |
c4f4fce7 | 74 | r = chase_symlinks(p, temp, 0, &result); |
d944dc95 LP |
75 | assert_se(r == -ENOENT); |
76 | ||
b12d25a8 ZJS |
77 | r = chase_symlinks(pslash, temp, 0, &result); |
78 | assert_se(r == -ENOENT); | |
79 | ||
d944dc95 | 80 | q = strjoina(temp, "/usr"); |
a9fb0867 | 81 | |
cb638b5e | 82 | r = chase_symlinks(p, temp, CHASE_NONEXISTENT, &result); |
a9fb0867 LP |
83 | assert_se(r == 0); |
84 | assert_se(path_equal(result, q)); | |
b12d25a8 | 85 | result = mfree(result); |
a9fb0867 | 86 | |
b12d25a8 | 87 | qslash = strjoina(q, "/"); |
d944dc95 | 88 | |
b12d25a8 ZJS |
89 | r = chase_symlinks(pslash, temp, CHASE_NONEXISTENT, &result); |
90 | assert_se(r == 0); | |
91 | assert_se(path_equal(result, qslash)); | |
f4b85a0f | 92 | result = mfree(result); |
b12d25a8 ZJS |
93 | |
94 | assert_se(mkdir(q, 0700) >= 0); | |
95 | ||
c4f4fce7 | 96 | r = chase_symlinks(p, temp, 0, &result); |
a9fb0867 | 97 | assert_se(r > 0); |
d944dc95 | 98 | assert_se(path_equal(result, q)); |
b12d25a8 ZJS |
99 | result = mfree(result); |
100 | ||
101 | r = chase_symlinks(pslash, temp, 0, &result); | |
102 | assert_se(r > 0); | |
103 | assert_se(path_equal(result, qslash)); | |
104 | result = mfree(result); | |
d944dc95 LP |
105 | |
106 | p = strjoina(temp, "/slash"); | |
107 | assert_se(symlink("/", p) >= 0); | |
108 | ||
c4f4fce7 | 109 | r = chase_symlinks(p, NULL, 0, &result); |
a9fb0867 | 110 | assert_se(r > 0); |
d944dc95 | 111 | assert_se(path_equal(result, "/")); |
d944dc95 | 112 | result = mfree(result); |
b12d25a8 | 113 | |
c4f4fce7 | 114 | r = chase_symlinks(p, temp, 0, &result); |
a9fb0867 | 115 | assert_se(r > 0); |
d944dc95 | 116 | assert_se(path_equal(result, temp)); |
b12d25a8 | 117 | result = mfree(result); |
d944dc95 | 118 | |
df878e68 ZJS |
119 | /* Paths that would "escape" outside of the "root" */ |
120 | ||
121 | p = strjoina(temp, "/6dots"); | |
122 | assert_se(symlink("../../..", p) >= 0); | |
123 | ||
c4f4fce7 | 124 | r = chase_symlinks(p, temp, 0, &result); |
a9fb0867 | 125 | assert_se(r > 0 && path_equal(result, temp)); |
b12d25a8 | 126 | result = mfree(result); |
df878e68 ZJS |
127 | |
128 | p = strjoina(temp, "/6dotsusr"); | |
129 | assert_se(symlink("../../../usr", p) >= 0); | |
130 | ||
c4f4fce7 | 131 | r = chase_symlinks(p, temp, 0, &result); |
a9fb0867 | 132 | assert_se(r > 0 && path_equal(result, q)); |
b12d25a8 | 133 | result = mfree(result); |
df878e68 ZJS |
134 | |
135 | p = strjoina(temp, "/top/8dotsusr"); | |
136 | assert_se(symlink("../../../../usr", p) >= 0); | |
137 | ||
c4f4fce7 | 138 | r = chase_symlinks(p, temp, 0, &result); |
a9fb0867 | 139 | assert_se(r > 0 && path_equal(result, q)); |
b12d25a8 | 140 | result = mfree(result); |
df878e68 ZJS |
141 | |
142 | /* Paths that contain repeated slashes */ | |
143 | ||
d944dc95 LP |
144 | p = strjoina(temp, "/slashslash"); |
145 | assert_se(symlink("///usr///", p) >= 0); | |
146 | ||
c4f4fce7 | 147 | r = chase_symlinks(p, NULL, 0, &result); |
a9fb0867 | 148 | assert_se(r > 0); |
d944dc95 | 149 | assert_se(path_equal(result, "/usr")); |
d944dc95 | 150 | result = mfree(result); |
b12d25a8 | 151 | |
c4f4fce7 | 152 | r = chase_symlinks(p, temp, 0, &result); |
a9fb0867 | 153 | assert_se(r > 0); |
d944dc95 | 154 | assert_se(path_equal(result, q)); |
b12d25a8 | 155 | result = mfree(result); |
d944dc95 | 156 | |
2a2fe6ed DM |
157 | /* Paths underneath the "root" with different UIDs while using CHASE_SAFE */ |
158 | ||
159 | if (geteuid() == 0) { | |
160 | p = strjoina(temp, "/user"); | |
161 | assert_se(mkdir(p, 0755) >= 0); | |
162 | assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0); | |
163 | ||
164 | q = strjoina(temp, "/user/root"); | |
165 | assert_se(mkdir(q, 0755) >= 0); | |
166 | ||
167 | p = strjoina(q, "/link"); | |
168 | assert_se(symlink("/", p) >= 0); | |
169 | ||
170 | /* Fail when user-owned directories contain root-owned subdirectories. */ | |
171 | r = chase_symlinks(p, temp, CHASE_SAFE, &result); | |
172 | assert_se(r == -ENOLINK); | |
173 | result = mfree(result); | |
174 | ||
175 | /* Allow this when the user-owned directories are all in the "root". */ | |
176 | r = chase_symlinks(p, q, CHASE_SAFE, &result); | |
177 | assert_se(r > 0); | |
178 | result = mfree(result); | |
179 | } | |
180 | ||
df878e68 ZJS |
181 | /* Paths using . */ |
182 | ||
c4f4fce7 | 183 | r = chase_symlinks("/etc/./.././", NULL, 0, &result); |
a9fb0867 | 184 | assert_se(r > 0); |
d944dc95 | 185 | assert_se(path_equal(result, "/")); |
d944dc95 | 186 | result = mfree(result); |
b12d25a8 | 187 | |
c4f4fce7 | 188 | r = chase_symlinks("/etc/./.././", "/etc", 0, &result); |
a9fb0867 | 189 | assert_se(r > 0 && path_equal(result, "/etc")); |
d944dc95 | 190 | result = mfree(result); |
b12d25a8 | 191 | |
95f35ccc YW |
192 | r = chase_symlinks("/../.././//../../etc", NULL, 0, &result); |
193 | assert_se(r > 0); | |
194 | assert_se(streq(result, "/etc")); | |
195 | result = mfree(result); | |
196 | ||
197 | r = chase_symlinks("/../.././//../../test-chase.fsldajfl", NULL, CHASE_NONEXISTENT, &result); | |
198 | assert_se(r == 0); | |
199 | assert_se(streq(result, "/test-chase.fsldajfl")); | |
200 | result = mfree(result); | |
201 | ||
202 | r = chase_symlinks("/../.././//../../etc", "/", CHASE_PREFIX_ROOT, &result); | |
203 | assert_se(r > 0); | |
204 | assert_se(streq(result, "/etc")); | |
205 | result = mfree(result); | |
206 | ||
207 | r = chase_symlinks("/../.././//../../test-chase.fsldajfl", "/", CHASE_PREFIX_ROOT|CHASE_NONEXISTENT, &result); | |
208 | assert_se(r == 0); | |
209 | assert_se(streq(result, "/test-chase.fsldajfl")); | |
210 | result = mfree(result); | |
211 | ||
c4f4fce7 | 212 | r = chase_symlinks("/etc/machine-id/foo", NULL, 0, &result); |
d944dc95 | 213 | assert_se(r == -ENOTDIR); |
b12d25a8 | 214 | result = mfree(result); |
d944dc95 | 215 | |
df878e68 ZJS |
216 | /* Path that loops back to self */ |
217 | ||
d944dc95 LP |
218 | p = strjoina(temp, "/recursive-symlink"); |
219 | assert_se(symlink("recursive-symlink", p) >= 0); | |
c4f4fce7 | 220 | r = chase_symlinks(p, NULL, 0, &result); |
d944dc95 LP |
221 | assert_se(r == -ELOOP); |
222 | ||
a9fb0867 LP |
223 | /* Path which doesn't exist */ |
224 | ||
225 | p = strjoina(temp, "/idontexist"); | |
226 | r = chase_symlinks(p, NULL, 0, &result); | |
227 | assert_se(r == -ENOENT); | |
228 | ||
cb638b5e | 229 | r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result); |
a9fb0867 LP |
230 | assert_se(r == 0); |
231 | assert_se(path_equal(result, p)); | |
232 | result = mfree(result); | |
233 | ||
234 | p = strjoina(temp, "/idontexist/meneither"); | |
235 | r = chase_symlinks(p, NULL, 0, &result); | |
236 | assert_se(r == -ENOENT); | |
237 | ||
cb638b5e | 238 | r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result); |
a9fb0867 LP |
239 | assert_se(r == 0); |
240 | assert_se(path_equal(result, p)); | |
241 | result = mfree(result); | |
242 | ||
243 | /* Path which doesn't exist, but contains weird stuff */ | |
244 | ||
245 | p = strjoina(temp, "/idontexist/.."); | |
246 | r = chase_symlinks(p, NULL, 0, &result); | |
247 | assert_se(r == -ENOENT); | |
248 | ||
cb638b5e | 249 | r = chase_symlinks(p, NULL, CHASE_NONEXISTENT, &result); |
a9fb0867 LP |
250 | assert_se(r == -ENOENT); |
251 | ||
877777d7 CCW |
252 | p = strjoina(temp, "/target"); |
253 | q = strjoina(temp, "/top"); | |
254 | assert_se(symlink(q, p) >= 0); | |
255 | p = strjoina(temp, "/target/idontexist"); | |
256 | r = chase_symlinks(p, NULL, 0, &result); | |
257 | assert_se(r == -ENOENT); | |
258 | ||
f14f1806 LP |
259 | if (geteuid() == 0) { |
260 | p = strjoina(temp, "/priv1"); | |
261 | assert_se(mkdir(p, 0755) >= 0); | |
262 | ||
263 | q = strjoina(p, "/priv2"); | |
264 | assert_se(mkdir(q, 0755) >= 0); | |
265 | ||
266 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL) >= 0); | |
267 | ||
268 | assert_se(chown(q, UID_NOBODY, GID_NOBODY) >= 0); | |
269 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL) >= 0); | |
270 | ||
271 | assert_se(chown(p, UID_NOBODY, GID_NOBODY) >= 0); | |
272 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL) >= 0); | |
273 | ||
274 | assert_se(chown(q, 0, 0) >= 0); | |
36c97dec | 275 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL) == -ENOLINK); |
f14f1806 LP |
276 | |
277 | assert_se(rmdir(q) >= 0); | |
278 | assert_se(symlink("/etc/passwd", q) >= 0); | |
36c97dec | 279 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL) == -ENOLINK); |
f14f1806 LP |
280 | |
281 | assert_se(chown(p, 0, 0) >= 0); | |
282 | assert_se(chase_symlinks(q, NULL, CHASE_SAFE, NULL) >= 0); | |
283 | } | |
284 | ||
1ed34d75 LP |
285 | p = strjoina(temp, "/machine-id-test"); |
286 | assert_se(symlink("/usr/../etc/./machine-id", p) >= 0); | |
287 | ||
288 | pfd = chase_symlinks(p, NULL, CHASE_OPEN, NULL); | |
289 | if (pfd != -ENOENT) { | |
1ed34d75 LP |
290 | _cleanup_close_ int fd = -1; |
291 | sd_id128_t a, b; | |
292 | ||
293 | assert_se(pfd >= 0); | |
294 | ||
f2324783 | 295 | fd = fd_reopen(pfd, O_RDONLY|O_CLOEXEC); |
1ed34d75 | 296 | assert_se(fd >= 0); |
1ed34d75 LP |
297 | safe_close(pfd); |
298 | ||
299 | assert_se(id128_read_fd(fd, ID128_PLAIN, &a) >= 0); | |
300 | assert_se(sd_id128_get_machine(&b) >= 0); | |
301 | assert_se(sd_id128_equal(a, b)); | |
302 | } | |
303 | ||
1f56e4ce FB |
304 | /* Test CHASE_NOFOLLOW */ |
305 | ||
306 | p = strjoina(temp, "/target"); | |
307 | q = strjoina(temp, "/symlink"); | |
308 | assert_se(symlink(p, q) >= 0); | |
309 | pfd = chase_symlinks(q, NULL, CHASE_OPEN|CHASE_NOFOLLOW, &result); | |
310 | assert_se(pfd > 0); | |
311 | assert_se(path_equal(result, q)); | |
312 | assert_se(fstat(pfd, &st) >= 0); | |
313 | assert_se(S_ISLNK(st.st_mode)); | |
314 | result = mfree(result); | |
315 | ||
316 | /* s1 -> s2 -> nonexistent */ | |
317 | q = strjoina(temp, "/s1"); | |
318 | assert_se(symlink("s2", q) >= 0); | |
319 | p = strjoina(temp, "/s2"); | |
320 | assert_se(symlink("nonexistent", p) >= 0); | |
321 | pfd = chase_symlinks(q, NULL, CHASE_OPEN|CHASE_NOFOLLOW, &result); | |
322 | assert_se(pfd > 0); | |
323 | assert_se(path_equal(result, q)); | |
324 | assert_se(fstat(pfd, &st) >= 0); | |
325 | assert_se(S_ISLNK(st.st_mode)); | |
326 | result = mfree(result); | |
327 | ||
49eb3659 LP |
328 | /* Test CHASE_ONE */ |
329 | ||
330 | p = strjoina(temp, "/start"); | |
331 | r = chase_symlinks(p, NULL, CHASE_STEP, &result); | |
332 | assert_se(r == 0); | |
333 | p = strjoina(temp, "/top/dot/dotdota"); | |
334 | assert_se(streq(p, result)); | |
335 | result = mfree(result); | |
336 | ||
337 | r = chase_symlinks(p, NULL, CHASE_STEP, &result); | |
338 | assert_se(r == 0); | |
339 | p = strjoina(temp, "/top/./dotdota"); | |
340 | assert_se(streq(p, result)); | |
341 | result = mfree(result); | |
342 | ||
343 | r = chase_symlinks(p, NULL, CHASE_STEP, &result); | |
344 | assert_se(r == 0); | |
345 | p = strjoina(temp, "/top/../a"); | |
346 | assert_se(streq(p, result)); | |
347 | result = mfree(result); | |
348 | ||
349 | r = chase_symlinks(p, NULL, CHASE_STEP, &result); | |
350 | assert_se(r == 0); | |
351 | p = strjoina(temp, "/a"); | |
352 | assert_se(streq(p, result)); | |
353 | result = mfree(result); | |
354 | ||
355 | r = chase_symlinks(p, NULL, CHASE_STEP, &result); | |
356 | assert_se(r == 0); | |
357 | p = strjoina(temp, "/b"); | |
358 | assert_se(streq(p, result)); | |
359 | result = mfree(result); | |
360 | ||
361 | r = chase_symlinks(p, NULL, CHASE_STEP, &result); | |
362 | assert_se(r == 0); | |
363 | assert_se(streq("/usr", result)); | |
364 | result = mfree(result); | |
365 | ||
366 | r = chase_symlinks("/usr", NULL, CHASE_STEP, &result); | |
367 | assert_se(r > 0); | |
368 | assert_se(streq("/usr", result)); | |
369 | result = mfree(result); | |
370 | ||
27964854 | 371 | cleanup: |
d944dc95 LP |
372 | assert_se(rm_rf(temp, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0); |
373 | } | |
374 | ||
c270684a | 375 | static void test_unlink_noerrno(void) { |
27964854 | 376 | char *name; |
c270684a RC |
377 | int fd; |
378 | ||
27964854 ZJS |
379 | log_info("/* %s */", __func__); |
380 | ||
381 | name = strjoina(arg_test_dir ?: "/tmp", "/test-close_nointr.XXXXXX"); | |
646853bd | 382 | fd = mkostemp_safe(name); |
c270684a RC |
383 | assert_se(fd >= 0); |
384 | assert_se(close_nointr(fd) >= 0); | |
385 | ||
386 | { | |
387 | PROTECT_ERRNO; | |
840f606d | 388 | errno = 42; |
c270684a | 389 | assert_se(unlink_noerrno(name) >= 0); |
840f606d | 390 | assert_se(errno == 42); |
c270684a | 391 | assert_se(unlink_noerrno(name) < 0); |
840f606d | 392 | assert_se(errno == 42); |
c270684a RC |
393 | } |
394 | } | |
395 | ||
396 | static void test_readlink_and_make_absolute(void) { | |
27964854 ZJS |
397 | const char *tempdir, *name, *name2, *name_alias; |
398 | _cleanup_free_ char *r1 = NULL, *r2 = NULL, *pwd = NULL; | |
399 | ||
400 | log_info("/* %s */", __func__); | |
401 | ||
402 | tempdir = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute"); | |
403 | name = strjoina(tempdir, "/original"); | |
404 | name2 = "test-readlink_and_make_absolute/original"; | |
405 | name_alias = strjoina(arg_test_dir ?: "/tmp", "/test-readlink_and_make_absolute-alias"); | |
c270684a | 406 | |
37c1d5e9 | 407 | assert_se(mkdir_safe(tempdir, 0755, getuid(), getgid(), MKDIR_WARN_MODE) >= 0); |
c270684a RC |
408 | assert_se(touch(name) >= 0); |
409 | ||
27964854 ZJS |
410 | if (symlink(name, name_alias) < 0) { |
411 | assert_se(IN_SET(errno, EINVAL, ENOSYS, ENOTTY, EPERM)); | |
412 | log_tests_skipped_errno(errno, "symlink() not possible"); | |
413 | } else { | |
414 | assert_se(readlink_and_make_absolute(name_alias, &r1) >= 0); | |
415 | assert_se(streq(r1, name)); | |
416 | assert_se(unlink(name_alias) >= 0); | |
c270684a | 417 | |
27964854 | 418 | assert_se(safe_getcwd(&pwd) >= 0); |
cd76d4c2 | 419 | |
27964854 ZJS |
420 | assert_se(chdir(tempdir) >= 0); |
421 | assert_se(symlink(name2, name_alias) >= 0); | |
422 | assert_se(readlink_and_make_absolute(name_alias, &r2) >= 0); | |
423 | assert_se(streq(r2, name)); | |
424 | assert_se(unlink(name_alias) >= 0); | |
c270684a | 425 | |
27964854 ZJS |
426 | assert_se(chdir(pwd) >= 0); |
427 | } | |
cd76d4c2 | 428 | |
c270684a RC |
429 | assert_se(rm_rf(tempdir, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0); |
430 | } | |
431 | ||
432 | static void test_get_files_in_directory(void) { | |
433 | _cleanup_strv_free_ char **l = NULL, **t = NULL; | |
434 | ||
27964854 | 435 | assert_se(get_files_in_directory(arg_test_dir ?: "/tmp", &l) >= 0); |
c270684a RC |
436 | assert_se(get_files_in_directory(".", &t) >= 0); |
437 | assert_se(get_files_in_directory(".", NULL) >= 0); | |
438 | } | |
439 | ||
34a8f081 | 440 | static void test_var_tmp(void) { |
4245eb50 | 441 | _cleanup_free_ char *tmpdir_backup = NULL, *temp_backup = NULL, *tmp_backup = NULL; |
992e8f22 | 442 | const char *tmp_dir = NULL, *t; |
34a8f081 | 443 | |
27964854 ZJS |
444 | log_info("/* %s */", __func__); |
445 | ||
992e8f22 LP |
446 | t = getenv("TMPDIR"); |
447 | if (t) { | |
448 | tmpdir_backup = strdup(t); | |
449 | assert_se(tmpdir_backup); | |
450 | } | |
34a8f081 | 451 | |
4245eb50 MAP |
452 | t = getenv("TEMP"); |
453 | if (t) { | |
454 | temp_backup = strdup(t); | |
455 | assert_se(temp_backup); | |
456 | } | |
457 | ||
458 | t = getenv("TMP"); | |
459 | if (t) { | |
460 | tmp_backup = strdup(t); | |
461 | assert_se(tmp_backup); | |
462 | } | |
463 | ||
85e55d14 YW |
464 | assert_se(unsetenv("TMPDIR") >= 0); |
465 | assert_se(unsetenv("TEMP") >= 0); | |
466 | assert_se(unsetenv("TMP") >= 0); | |
34a8f081 | 467 | |
992e8f22 LP |
468 | assert_se(var_tmp_dir(&tmp_dir) >= 0); |
469 | assert_se(streq(tmp_dir, "/var/tmp")); | |
34a8f081 | 470 | |
992e8f22 LP |
471 | assert_se(setenv("TMPDIR", "/tmp", true) >= 0); |
472 | assert_se(streq(getenv("TMPDIR"), "/tmp")); | |
34a8f081 | 473 | |
992e8f22 LP |
474 | assert_se(var_tmp_dir(&tmp_dir) >= 0); |
475 | assert_se(streq(tmp_dir, "/tmp")); | |
34a8f081 | 476 | |
992e8f22 LP |
477 | assert_se(setenv("TMPDIR", "/88_does_not_exist_88", true) >= 0); |
478 | assert_se(streq(getenv("TMPDIR"), "/88_does_not_exist_88")); | |
34a8f081 | 479 | |
992e8f22 LP |
480 | assert_se(var_tmp_dir(&tmp_dir) >= 0); |
481 | assert_se(streq(tmp_dir, "/var/tmp")); | |
34a8f081 | 482 | |
992e8f22 LP |
483 | if (tmpdir_backup) { |
484 | assert_se(setenv("TMPDIR", tmpdir_backup, true) >= 0); | |
485 | assert_se(streq(getenv("TMPDIR"), tmpdir_backup)); | |
34a8f081 | 486 | } |
4245eb50 MAP |
487 | |
488 | if (temp_backup) { | |
489 | assert_se(setenv("TEMP", temp_backup, true) >= 0); | |
490 | assert_se(streq(getenv("TEMP"), temp_backup)); | |
491 | } | |
492 | ||
493 | if (tmp_backup) { | |
494 | assert_se(setenv("TMP", tmp_backup, true) >= 0); | |
495 | assert_se(streq(getenv("TMP"), tmp_backup)); | |
496 | } | |
34a8f081 OW |
497 | } |
498 | ||
49bfc877 | 499 | static void test_dot_or_dot_dot(void) { |
27964854 ZJS |
500 | log_info("/* %s */", __func__); |
501 | ||
49bfc877 LP |
502 | assert_se(!dot_or_dot_dot(NULL)); |
503 | assert_se(!dot_or_dot_dot("")); | |
504 | assert_se(!dot_or_dot_dot("xxx")); | |
505 | assert_se(dot_or_dot_dot(".")); | |
506 | assert_se(dot_or_dot_dot("..")); | |
507 | assert_se(!dot_or_dot_dot(".foo")); | |
508 | assert_se(!dot_or_dot_dot("..foo")); | |
509 | } | |
510 | ||
57a4359e LP |
511 | static void test_access_fd(void) { |
512 | _cleanup_(rmdir_and_freep) char *p = NULL; | |
513 | _cleanup_close_ int fd = -1; | |
27964854 | 514 | const char *a; |
57a4359e | 515 | |
27964854 ZJS |
516 | log_info("/* %s */", __func__); |
517 | ||
518 | a = strjoina(arg_test_dir ?: "/tmp", "/access-fd.XXXXXX"); | |
519 | assert_se(mkdtemp_malloc(a, &p) >= 0); | |
57a4359e LP |
520 | |
521 | fd = open(p, O_RDONLY|O_DIRECTORY|O_CLOEXEC); | |
522 | assert_se(fd >= 0); | |
523 | ||
524 | assert_se(access_fd(fd, R_OK) >= 0); | |
525 | assert_se(access_fd(fd, F_OK) >= 0); | |
526 | assert_se(access_fd(fd, W_OK) >= 0); | |
527 | ||
528 | assert_se(fchmod(fd, 0000) >= 0); | |
529 | ||
530 | assert_se(access_fd(fd, F_OK) >= 0); | |
531 | ||
532 | if (geteuid() == 0) { | |
533 | assert_se(access_fd(fd, R_OK) >= 0); | |
534 | assert_se(access_fd(fd, W_OK) >= 0); | |
535 | } else { | |
536 | assert_se(access_fd(fd, R_OK) == -EACCES); | |
537 | assert_se(access_fd(fd, W_OK) == -EACCES); | |
538 | } | |
539 | } | |
540 | ||
9e3fa6e8 LP |
541 | static void test_touch_file(void) { |
542 | uid_t test_uid, test_gid; | |
543 | _cleanup_(rm_rf_physical_and_freep) char *p = NULL; | |
544 | struct stat st; | |
545 | const char *a; | |
546 | usec_t test_mtime; | |
9590065f | 547 | int r; |
9e3fa6e8 | 548 | |
27964854 ZJS |
549 | log_info("/* %s */", __func__); |
550 | ||
9e3fa6e8 LP |
551 | test_uid = geteuid() == 0 ? 65534 : getuid(); |
552 | test_gid = geteuid() == 0 ? 65534 : getgid(); | |
553 | ||
554 | test_mtime = usec_sub_unsigned(now(CLOCK_REALTIME), USEC_PER_WEEK); | |
555 | ||
27964854 ZJS |
556 | a = strjoina(arg_test_dir ?: "/dev/shm", "/touch-file-XXXXXX"); |
557 | assert_se(mkdtemp_malloc(a, &p) >= 0); | |
9e3fa6e8 LP |
558 | |
559 | a = strjoina(p, "/regular"); | |
27964854 ZJS |
560 | r = touch_file(a, false, test_mtime, test_uid, test_gid, 0640); |
561 | if (r < 0) { | |
562 | assert_se(IN_SET(r, -EINVAL, -ENOSYS, -ENOTTY, -EPERM)); | |
563 | log_tests_skipped_errno(errno, "touch_file() not possible"); | |
564 | return; | |
565 | } | |
566 | ||
9e3fa6e8 LP |
567 | assert_se(lstat(a, &st) >= 0); |
568 | assert_se(st.st_uid == test_uid); | |
569 | assert_se(st.st_gid == test_gid); | |
570 | assert_se(S_ISREG(st.st_mode)); | |
571 | assert_se((st.st_mode & 0777) == 0640); | |
572 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
573 | ||
574 | a = strjoina(p, "/dir"); | |
575 | assert_se(mkdir(a, 0775) >= 0); | |
576 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
577 | assert_se(lstat(a, &st) >= 0); | |
578 | assert_se(st.st_uid == test_uid); | |
579 | assert_se(st.st_gid == test_gid); | |
580 | assert_se(S_ISDIR(st.st_mode)); | |
581 | assert_se((st.st_mode & 0777) == 0640); | |
582 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
583 | ||
584 | a = strjoina(p, "/fifo"); | |
585 | assert_se(mkfifo(a, 0775) >= 0); | |
586 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
587 | assert_se(lstat(a, &st) >= 0); | |
588 | assert_se(st.st_uid == test_uid); | |
589 | assert_se(st.st_gid == test_gid); | |
590 | assert_se(S_ISFIFO(st.st_mode)); | |
591 | assert_se((st.st_mode & 0777) == 0640); | |
592 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
593 | ||
594 | a = strjoina(p, "/sock"); | |
595 | assert_se(mknod(a, 0775 | S_IFSOCK, 0) >= 0); | |
596 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
597 | assert_se(lstat(a, &st) >= 0); | |
598 | assert_se(st.st_uid == test_uid); | |
599 | assert_se(st.st_gid == test_gid); | |
600 | assert_se(S_ISSOCK(st.st_mode)); | |
601 | assert_se((st.st_mode & 0777) == 0640); | |
602 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
603 | ||
604 | if (geteuid() == 0) { | |
605 | a = strjoina(p, "/cdev"); | |
9590065f YW |
606 | r = mknod(a, 0775 | S_IFCHR, makedev(0, 0)); |
607 | if (r < 0 && errno == EPERM && detect_container() > 0) { | |
608 | log_notice("Running in unprivileged container? Skipping remaining tests in %s", __func__); | |
609 | return; | |
610 | } | |
611 | assert_se(r >= 0); | |
9e3fa6e8 LP |
612 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); |
613 | assert_se(lstat(a, &st) >= 0); | |
614 | assert_se(st.st_uid == test_uid); | |
615 | assert_se(st.st_gid == test_gid); | |
616 | assert_se(S_ISCHR(st.st_mode)); | |
617 | assert_se((st.st_mode & 0777) == 0640); | |
618 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
619 | ||
620 | a = strjoina(p, "/bdev"); | |
621 | assert_se(mknod(a, 0775 | S_IFBLK, makedev(0, 0)) >= 0); | |
622 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
623 | assert_se(lstat(a, &st) >= 0); | |
624 | assert_se(st.st_uid == test_uid); | |
625 | assert_se(st.st_gid == test_gid); | |
626 | assert_se(S_ISBLK(st.st_mode)); | |
627 | assert_se((st.st_mode & 0777) == 0640); | |
628 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
629 | } | |
630 | ||
631 | a = strjoina(p, "/lnk"); | |
632 | assert_se(symlink("target", a) >= 0); | |
633 | assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0); | |
634 | assert_se(lstat(a, &st) >= 0); | |
635 | assert_se(st.st_uid == test_uid); | |
636 | assert_se(st.st_gid == test_gid); | |
637 | assert_se(S_ISLNK(st.st_mode)); | |
638 | assert_se((st.st_mode & 0777) == 0640); | |
639 | assert_se(timespec_load(&st.st_mtim) == test_mtime); | |
640 | } | |
641 | ||
43767d9d LP |
642 | static void test_unlinkat_deallocate(void) { |
643 | _cleanup_free_ char *p = NULL; | |
644 | _cleanup_close_ int fd = -1; | |
645 | struct stat st; | |
646 | ||
27964854 ZJS |
647 | log_info("/* %s */", __func__); |
648 | ||
649 | assert_se(tempfn_random_child(arg_test_dir, "unlink-deallocation", &p) >= 0); | |
43767d9d LP |
650 | |
651 | fd = open(p, O_WRONLY|O_CLOEXEC|O_CREAT|O_EXCL, 0600); | |
652 | assert_se(fd >= 0); | |
653 | ||
654 | assert_se(write(fd, "hallo\n", 6) == 6); | |
655 | ||
656 | assert_se(fstat(fd, &st) >= 0); | |
657 | assert_se(st.st_size == 6); | |
658 | assert_se(st.st_blocks > 0); | |
659 | assert_se(st.st_nlink == 1); | |
660 | ||
661 | assert_se(unlinkat_deallocate(AT_FDCWD, p, 0) >= 0); | |
662 | ||
663 | assert_se(fstat(fd, &st) >= 0); | |
27964854 ZJS |
664 | assert_se(IN_SET(st.st_size, 0, 6)); /* depending on whether hole punching worked the size will be 6 |
665 | (it worked) or 0 (we had to resort to truncation) */ | |
43767d9d LP |
666 | assert_se(st.st_blocks == 0); |
667 | assert_se(st.st_nlink == 0); | |
668 | } | |
669 | ||
11b29a96 LP |
670 | static void test_fsync_directory_of_file(void) { |
671 | _cleanup_close_ int fd = -1; | |
672 | ||
27964854 ZJS |
673 | log_info("/* %s */", __func__); |
674 | ||
675 | fd = open_tmpfile_unlinkable(arg_test_dir, O_RDWR); | |
11b29a96 LP |
676 | assert_se(fd >= 0); |
677 | ||
678 | assert_se(fsync_directory_of_file(fd) >= 0); | |
679 | } | |
680 | ||
4a5d7761 | 681 | static void test_rename_noreplace(void) { |
7158b4b3 | 682 | static const char* const table[] = { |
4a5d7761 LP |
683 | "/reg", |
684 | "/dir", | |
685 | "/fifo", | |
686 | "/socket", | |
687 | "/symlink", | |
688 | NULL | |
689 | }; | |
690 | ||
691 | _cleanup_(rm_rf_physical_and_freep) char *z = NULL; | |
27964854 | 692 | const char *j = NULL; |
4a5d7761 LP |
693 | char **a, **b; |
694 | ||
27964854 ZJS |
695 | log_info("/* %s */", __func__); |
696 | ||
697 | if (arg_test_dir) | |
698 | j = strjoina(arg_test_dir, "/testXXXXXX"); | |
7158b4b3 | 699 | assert_se(mkdtemp_malloc(j, &z) >= 0); |
4a5d7761 LP |
700 | |
701 | j = strjoina(z, table[0]); | |
702 | assert_se(touch(j) >= 0); | |
703 | ||
704 | j = strjoina(z, table[1]); | |
705 | assert_se(mkdir(j, 0777) >= 0); | |
706 | ||
707 | j = strjoina(z, table[2]); | |
708 | (void) mkfifo(j, 0777); | |
709 | ||
710 | j = strjoina(z, table[3]); | |
711 | (void) mknod(j, S_IFSOCK | 0777, 0); | |
712 | ||
713 | j = strjoina(z, table[4]); | |
714 | (void) symlink("foobar", j); | |
715 | ||
716 | STRV_FOREACH(a, (char**) table) { | |
717 | _cleanup_free_ char *x = NULL, *y = NULL; | |
718 | ||
719 | x = strjoin(z, *a); | |
720 | assert_se(x); | |
721 | ||
722 | if (access(x, F_OK) < 0) { | |
723 | assert_se(errno == ENOENT); | |
724 | continue; | |
725 | } | |
726 | ||
727 | STRV_FOREACH(b, (char**) table) { | |
b81b9d40 | 728 | _cleanup_free_ char *w = NULL; |
4a5d7761 | 729 | |
b81b9d40 YW |
730 | w = strjoin(w, *b); |
731 | assert_se(w); | |
732 | ||
733 | if (access(w, F_OK) < 0) { | |
4a5d7761 LP |
734 | assert_se(errno == ENOENT); |
735 | continue; | |
736 | } | |
737 | ||
b81b9d40 | 738 | assert_se(rename_noreplace(AT_FDCWD, w, AT_FDCWD, y) == -EEXIST); |
4a5d7761 LP |
739 | } |
740 | ||
741 | y = strjoin(z, "/somethingelse"); | |
742 | assert_se(y); | |
743 | ||
744 | assert_se(rename_noreplace(AT_FDCWD, x, AT_FDCWD, y) >= 0); | |
745 | assert_se(rename_noreplace(AT_FDCWD, y, AT_FDCWD, x) >= 0); | |
746 | } | |
747 | } | |
748 | ||
c270684a | 749 | int main(int argc, char *argv[]) { |
27964854 ZJS |
750 | test_setup_logging(LOG_INFO); |
751 | ||
752 | arg_test_dir = argv[1]; | |
753 | ||
c270684a | 754 | test_unlink_noerrno(); |
c270684a | 755 | test_get_files_in_directory(); |
496c486f | 756 | test_readlink_and_make_absolute(); |
34a8f081 | 757 | test_var_tmp(); |
d944dc95 | 758 | test_chase_symlinks(); |
49bfc877 | 759 | test_dot_or_dot_dot(); |
57a4359e | 760 | test_access_fd(); |
9e3fa6e8 | 761 | test_touch_file(); |
43767d9d | 762 | test_unlinkat_deallocate(); |
11b29a96 | 763 | test_fsync_directory_of_file(); |
4a5d7761 | 764 | test_rename_noreplace(); |
c270684a RC |
765 | |
766 | return 0; | |
767 | } |