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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
0b452006 | 2 | |
69281c49 LP |
3 | #include <sched.h> |
4 | #include <sys/mount.h> | |
26fbedd7 | 5 | #include <sys/personality.h> |
69281c49 | 6 | #include <sys/prctl.h> |
0b452006 | 7 | #include <sys/stat.h> |
07630cea | 8 | #include <sys/types.h> |
0b452006 RC |
9 | #include <sys/wait.h> |
10 | #include <unistd.h> | |
349cc4a5 | 11 | #if HAVE_VALGRIND_VALGRIND_H |
b3d69149 EV |
12 | #include <valgrind/valgrind.h> |
13 | #endif | |
0b452006 | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
26fbedd7 | 16 | #include "architecture.h" |
69281c49 | 17 | #include "fd-util.h" |
0b452006 | 18 | #include "log.h" |
0b452006 | 19 | #include "macro.h" |
36dd5ffd | 20 | #include "missing.h" |
18dade5a | 21 | #include "parse-util.h" |
07630cea | 22 | #include "process-util.h" |
4c253ed1 | 23 | #include "signal-util.h" |
9a140c35 | 24 | #include "stdio-util.h" |
07630cea | 25 | #include "string-util.h" |
288a74cc | 26 | #include "terminal-util.h" |
76c19e9f | 27 | #include "test-helper.h" |
6d7c4033 | 28 | #include "tests.h" |
07630cea LP |
29 | #include "util.h" |
30 | #include "virt.h" | |
0b452006 | 31 | |
9a140c35 | 32 | static void test_get_process_comm(pid_t pid) { |
0b452006 | 33 | struct stat st; |
ba19c6e1 | 34 | _cleanup_free_ char *a = NULL, *c = NULL, *d = NULL, *f = NULL, *i = NULL; |
0b452006 | 35 | _cleanup_free_ char *env = NULL; |
fbd0b64f | 36 | char path[STRLEN("/proc//comm") + DECIMAL_STR_MAX(pid_t)]; |
0b452006 RC |
37 | pid_t e; |
38 | uid_t u; | |
39 | gid_t g; | |
40 | dev_t h; | |
41 | int r; | |
0b452006 | 42 | |
9a140c35 ZJS |
43 | xsprintf(path, "/proc/"PID_FMT"/comm", pid); |
44 | ||
45 | if (stat(path, &st) == 0) { | |
46 | assert_se(get_process_comm(pid, &a) >= 0); | |
47 | log_info("PID"PID_FMT" comm: '%s'", pid, a); | |
cfeaa44a | 48 | } else |
9a140c35 | 49 | log_warning("%s not exist.", path); |
0b452006 | 50 | |
9a140c35 ZJS |
51 | assert_se(get_process_cmdline(pid, 0, true, &c) >= 0); |
52 | log_info("PID"PID_FMT" cmdline: '%s'", pid, c); | |
0b452006 | 53 | |
9a140c35 | 54 | assert_se(get_process_cmdline(pid, 8, false, &d) >= 0); |
69281c49 LP |
55 | log_info("PID"PID_FMT" cmdline truncated to 8: '%s'", pid, d); |
56 | ||
57 | free(d); | |
58 | assert_se(get_process_cmdline(pid, 1, false, &d) >= 0); | |
59 | log_info("PID"PID_FMT" cmdline truncated to 1: '%s'", pid, d); | |
0b452006 | 60 | |
9a140c35 ZJS |
61 | assert_se(get_process_ppid(pid, &e) >= 0); |
62 | log_info("PID"PID_FMT" PPID: "PID_FMT, pid, e); | |
63 | assert_se(pid == 1 ? e == 0 : e > 0); | |
0b452006 | 64 | |
9a140c35 | 65 | assert_se(is_kernel_thread(pid) == 0 || pid != 1); |
0b452006 | 66 | |
9a140c35 | 67 | r = get_process_exe(pid, &f); |
0b452006 | 68 | assert_se(r >= 0 || r == -EACCES); |
9a140c35 | 69 | log_info("PID"PID_FMT" exe: '%s'", pid, strna(f)); |
0b452006 | 70 | |
9a140c35 ZJS |
71 | assert_se(get_process_uid(pid, &u) == 0); |
72 | log_info("PID"PID_FMT" UID: "UID_FMT, pid, u); | |
0b452006 | 73 | |
9a140c35 ZJS |
74 | assert_se(get_process_gid(pid, &g) == 0); |
75 | log_info("PID"PID_FMT" GID: "GID_FMT, pid, g); | |
0b452006 | 76 | |
9a140c35 | 77 | r = get_process_environ(pid, &env); |
0b452006 | 78 | assert_se(r >= 0 || r == -EACCES); |
9a140c35 | 79 | log_info("PID"PID_FMT" strlen(environ): %zi", pid, env ? (ssize_t)strlen(env) : (ssize_t)-errno); |
0b452006 | 80 | |
75f86906 | 81 | if (!detect_container()) |
9a140c35 | 82 | assert_se(get_ctty_devnr(pid, &h) == -ENXIO || pid != 1); |
0b452006 | 83 | |
6fb05b07 | 84 | (void) getenv_for_pid(pid, "PATH", &i); |
9a140c35 | 85 | log_info("PID"PID_FMT" $PATH: '%s'", pid, strna(i)); |
0b452006 RC |
86 | } |
87 | ||
ce268825 LP |
88 | static void test_get_process_comm_escape_one(const char *input, const char *output) { |
89 | _cleanup_free_ char *n = NULL; | |
90 | ||
91 | log_info("input: <%s> — output: <%s>", input, output); | |
92 | ||
93 | assert_se(prctl(PR_SET_NAME, input) >= 0); | |
94 | assert_se(get_process_comm(0, &n) >= 0); | |
95 | ||
96 | log_info("got: <%s>", n); | |
97 | ||
98 | assert_se(streq_ptr(n, output)); | |
99 | } | |
100 | ||
101 | static void test_get_process_comm_escape(void) { | |
102 | _cleanup_free_ char *saved = NULL; | |
103 | ||
104 | assert_se(get_process_comm(0, &saved) >= 0); | |
105 | ||
106 | test_get_process_comm_escape_one("", ""); | |
107 | test_get_process_comm_escape_one("foo", "foo"); | |
108 | test_get_process_comm_escape_one("012345678901234", "012345678901234"); | |
109 | test_get_process_comm_escape_one("0123456789012345", "012345678901234"); | |
110 | test_get_process_comm_escape_one("äöüß", "\\303\\244\\303…"); | |
111 | test_get_process_comm_escape_one("xäöüß", "x\\303\\244…"); | |
112 | test_get_process_comm_escape_one("xxäöüß", "xx\\303\\244…"); | |
113 | test_get_process_comm_escape_one("xxxäöüß", "xxx\\303\\244…"); | |
114 | test_get_process_comm_escape_one("xxxxäöüß", "xxxx\\303\\244…"); | |
115 | test_get_process_comm_escape_one("xxxxxäöüß", "xxxxx\\303…"); | |
116 | ||
117 | assert_se(prctl(PR_SET_NAME, saved) >= 0); | |
118 | } | |
119 | ||
0b452006 RC |
120 | static void test_pid_is_unwaited(void) { |
121 | pid_t pid; | |
122 | ||
123 | pid = fork(); | |
124 | assert_se(pid >= 0); | |
125 | if (pid == 0) { | |
126 | _exit(EXIT_SUCCESS); | |
127 | } else { | |
128 | int status; | |
129 | ||
130 | waitpid(pid, &status, 0); | |
131 | assert_se(!pid_is_unwaited(pid)); | |
132 | } | |
df0ff127 | 133 | assert_se(pid_is_unwaited(getpid_cached())); |
0b452006 RC |
134 | assert_se(!pid_is_unwaited(-1)); |
135 | } | |
136 | ||
137 | static void test_pid_is_alive(void) { | |
138 | pid_t pid; | |
139 | ||
140 | pid = fork(); | |
141 | assert_se(pid >= 0); | |
142 | if (pid == 0) { | |
143 | _exit(EXIT_SUCCESS); | |
144 | } else { | |
145 | int status; | |
146 | ||
147 | waitpid(pid, &status, 0); | |
148 | assert_se(!pid_is_alive(pid)); | |
149 | } | |
df0ff127 | 150 | assert_se(pid_is_alive(getpid_cached())); |
0b452006 RC |
151 | assert_se(!pid_is_alive(-1)); |
152 | } | |
153 | ||
26fbedd7 LP |
154 | static void test_personality(void) { |
155 | ||
156 | assert_se(personality_to_string(PER_LINUX)); | |
157 | assert_se(!personality_to_string(PERSONALITY_INVALID)); | |
158 | ||
159 | assert_se(streq(personality_to_string(PER_LINUX), architecture_to_string(native_architecture()))); | |
160 | ||
161 | assert_se(personality_from_string(personality_to_string(PER_LINUX)) == PER_LINUX); | |
162 | assert_se(personality_from_string(architecture_to_string(native_architecture())) == PER_LINUX); | |
163 | ||
164 | #ifdef __x86_64__ | |
165 | assert_se(streq_ptr(personality_to_string(PER_LINUX), "x86-64")); | |
166 | assert_se(streq_ptr(personality_to_string(PER_LINUX32), "x86")); | |
167 | ||
168 | assert_se(personality_from_string("x86-64") == PER_LINUX); | |
169 | assert_se(personality_from_string("x86") == PER_LINUX32); | |
170 | assert_se(personality_from_string("ia64") == PERSONALITY_INVALID); | |
171 | assert_se(personality_from_string(NULL) == PERSONALITY_INVALID); | |
172 | ||
173 | assert_se(personality_from_string(personality_to_string(PER_LINUX32)) == PER_LINUX32); | |
174 | #endif | |
175 | } | |
176 | ||
69281c49 LP |
177 | static void test_get_process_cmdline_harder(void) { |
178 | char path[] = "/tmp/test-cmdlineXXXXXX"; | |
179 | _cleanup_close_ int fd = -1; | |
180 | _cleanup_free_ char *line = NULL; | |
181 | pid_t pid; | |
182 | ||
92f6a1b6 YW |
183 | if (geteuid() != 0) { |
184 | log_info("Skipping %s: not root", __func__); | |
69281c49 | 185 | return; |
92f6a1b6 | 186 | } |
69281c49 | 187 | |
5f00dc4d LP |
188 | if (!have_namespaces()) { |
189 | log_notice("Testing without namespaces, skipping %s", __func__); | |
190 | return; | |
191 | } | |
192 | ||
349cc4a5 | 193 | #if HAVE_VALGRIND_VALGRIND_H |
b3d69149 EV |
194 | /* valgrind patches open(/proc//cmdline) |
195 | * so, test_get_process_cmdline_harder fails always | |
196 | * See https://github.com/systemd/systemd/pull/3555#issuecomment-226564908 */ | |
92f6a1b6 YW |
197 | if (RUNNING_ON_VALGRIND) { |
198 | log_info("Skipping %s: running on valgrind", __func__); | |
b3d69149 | 199 | return; |
92f6a1b6 | 200 | } |
b3d69149 EV |
201 | #endif |
202 | ||
69281c49 LP |
203 | pid = fork(); |
204 | if (pid > 0) { | |
205 | siginfo_t si; | |
206 | ||
207 | (void) wait_for_terminate(pid, &si); | |
208 | ||
209 | assert_se(si.si_code == CLD_EXITED); | |
210 | assert_se(si.si_status == 0); | |
211 | ||
212 | return; | |
213 | } | |
214 | ||
215 | assert_se(pid == 0); | |
216 | assert_se(unshare(CLONE_NEWNS) >= 0); | |
217 | ||
0ffa4c7c EV |
218 | if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) { |
219 | log_warning_errno(errno, "mount(..., \"/\", MS_SLAVE|MS_REC, ...) failed: %m"); | |
220 | assert_se(IN_SET(errno, EPERM, EACCES)); | |
221 | return; | |
222 | } | |
c58fd466 | 223 | |
69281c49 LP |
224 | fd = mkostemp(path, O_CLOEXEC); |
225 | assert_se(fd >= 0); | |
347ebd02 | 226 | |
0ffa4c7c EV |
227 | /* Note that we don't unmount the following bind-mount at the end of the test because the kernel |
228 | * will clear up its /proc/PID/ hierarchy automatically as soon as the test stops. */ | |
347ebd02 ZJS |
229 | if (mount(path, "/proc/self/cmdline", "bind", MS_BIND, NULL) < 0) { |
230 | /* This happens under selinux… Abort the test in this case. */ | |
231 | log_warning_errno(errno, "mount(..., \"/proc/self/cmdline\", \"bind\", ...) failed: %m"); | |
0ffa4c7c | 232 | assert_se(IN_SET(errno, EPERM, EACCES)); |
347ebd02 ZJS |
233 | return; |
234 | } | |
235 | ||
69281c49 LP |
236 | assert_se(unlink(path) >= 0); |
237 | ||
238 | assert_se(prctl(PR_SET_NAME, "testa") >= 0); | |
239 | ||
df0ff127 | 240 | assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT); |
69281c49 | 241 | |
df0ff127 | 242 | assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0); |
69281c49 LP |
243 | assert_se(streq(line, "[testa]")); |
244 | line = mfree(line); | |
245 | ||
df0ff127 | 246 | assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0); |
69281c49 LP |
247 | assert_se(streq(line, "")); |
248 | line = mfree(line); | |
249 | ||
df0ff127 | 250 | assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0); |
69281c49 LP |
251 | assert_se(streq(line, "[")); |
252 | line = mfree(line); | |
253 | ||
df0ff127 | 254 | assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0); |
69281c49 LP |
255 | assert_se(streq(line, "[.")); |
256 | line = mfree(line); | |
257 | ||
df0ff127 | 258 | assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0); |
69281c49 LP |
259 | assert_se(streq(line, "[..")); |
260 | line = mfree(line); | |
261 | ||
df0ff127 | 262 | assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0); |
69281c49 LP |
263 | assert_se(streq(line, "[...")); |
264 | line = mfree(line); | |
265 | ||
df0ff127 | 266 | assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0); |
69281c49 LP |
267 | assert_se(streq(line, "[...]")); |
268 | line = mfree(line); | |
269 | ||
df0ff127 | 270 | assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0); |
69281c49 LP |
271 | assert_se(streq(line, "[t...]")); |
272 | line = mfree(line); | |
273 | ||
df0ff127 | 274 | assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0); |
69281c49 LP |
275 | assert_se(streq(line, "[testa]")); |
276 | line = mfree(line); | |
277 | ||
278 | assert_se(write(fd, "\0\0\0\0\0\0\0\0\0", 10) == 10); | |
279 | ||
df0ff127 | 280 | assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT); |
69281c49 | 281 | |
df0ff127 | 282 | assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0); |
69281c49 LP |
283 | assert_se(streq(line, "[testa]")); |
284 | line = mfree(line); | |
285 | ||
286 | assert_se(write(fd, "foo\0bar\0\0\0\0\0", 10) == 10); | |
287 | ||
df0ff127 | 288 | assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0); |
69281c49 LP |
289 | assert_se(streq(line, "foo bar")); |
290 | line = mfree(line); | |
291 | ||
df0ff127 | 292 | assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0); |
69281c49 LP |
293 | assert_se(streq(line, "foo bar")); |
294 | line = mfree(line); | |
295 | ||
296 | assert_se(write(fd, "quux", 4) == 4); | |
df0ff127 | 297 | assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0); |
69281c49 LP |
298 | assert_se(streq(line, "foo bar quux")); |
299 | line = mfree(line); | |
300 | ||
df0ff127 | 301 | assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0); |
69281c49 LP |
302 | assert_se(streq(line, "foo bar quux")); |
303 | line = mfree(line); | |
304 | ||
df0ff127 | 305 | assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0); |
69281c49 LP |
306 | assert_se(streq(line, "")); |
307 | line = mfree(line); | |
308 | ||
df0ff127 | 309 | assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0); |
69281c49 LP |
310 | assert_se(streq(line, ".")); |
311 | line = mfree(line); | |
312 | ||
df0ff127 | 313 | assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0); |
69281c49 LP |
314 | assert_se(streq(line, "..")); |
315 | line = mfree(line); | |
316 | ||
df0ff127 | 317 | assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0); |
69281c49 LP |
318 | assert_se(streq(line, "...")); |
319 | line = mfree(line); | |
320 | ||
df0ff127 | 321 | assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0); |
69281c49 LP |
322 | assert_se(streq(line, "f...")); |
323 | line = mfree(line); | |
324 | ||
df0ff127 | 325 | assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0); |
69281c49 LP |
326 | assert_se(streq(line, "fo...")); |
327 | line = mfree(line); | |
328 | ||
df0ff127 | 329 | assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0); |
69281c49 LP |
330 | assert_se(streq(line, "foo...")); |
331 | line = mfree(line); | |
332 | ||
df0ff127 | 333 | assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0); |
69281c49 LP |
334 | assert_se(streq(line, "foo...")); |
335 | line = mfree(line); | |
336 | ||
df0ff127 | 337 | assert_se(get_process_cmdline(getpid_cached(), 9, true, &line) >= 0); |
69281c49 LP |
338 | assert_se(streq(line, "foo b...")); |
339 | line = mfree(line); | |
340 | ||
df0ff127 | 341 | assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0); |
69281c49 LP |
342 | assert_se(streq(line, "foo ba...")); |
343 | line = mfree(line); | |
344 | ||
df0ff127 | 345 | assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0); |
69281c49 LP |
346 | assert_se(streq(line, "foo bar...")); |
347 | line = mfree(line); | |
348 | ||
df0ff127 | 349 | assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0); |
69281c49 LP |
350 | assert_se(streq(line, "foo bar...")); |
351 | line = mfree(line); | |
352 | ||
df0ff127 | 353 | assert_se(get_process_cmdline(getpid_cached(), 13, true, &line) >= 0); |
69281c49 LP |
354 | assert_se(streq(line, "foo bar quux")); |
355 | line = mfree(line); | |
356 | ||
df0ff127 | 357 | assert_se(get_process_cmdline(getpid_cached(), 14, true, &line) >= 0); |
69281c49 LP |
358 | assert_se(streq(line, "foo bar quux")); |
359 | line = mfree(line); | |
360 | ||
df0ff127 | 361 | assert_se(get_process_cmdline(getpid_cached(), 1000, true, &line) >= 0); |
69281c49 LP |
362 | assert_se(streq(line, "foo bar quux")); |
363 | line = mfree(line); | |
364 | ||
365 | assert_se(ftruncate(fd, 0) >= 0); | |
366 | assert_se(prctl(PR_SET_NAME, "aaaa bbbb cccc") >= 0); | |
367 | ||
df0ff127 | 368 | assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT); |
69281c49 | 369 | |
df0ff127 | 370 | assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0); |
69281c49 LP |
371 | assert_se(streq(line, "[aaaa bbbb cccc]")); |
372 | line = mfree(line); | |
373 | ||
df0ff127 | 374 | assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0); |
69281c49 LP |
375 | assert_se(streq(line, "[aaaa...]")); |
376 | line = mfree(line); | |
377 | ||
df0ff127 | 378 | assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0); |
69281c49 LP |
379 | assert_se(streq(line, "[aaaa...]")); |
380 | line = mfree(line); | |
381 | ||
df0ff127 | 382 | assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0); |
69281c49 LP |
383 | assert_se(streq(line, "[aaaa b...]")); |
384 | line = mfree(line); | |
385 | ||
386 | safe_close(fd); | |
a45d7127 | 387 | _exit(EXIT_SUCCESS); |
69281c49 LP |
388 | } |
389 | ||
049c884a | 390 | static void test_rename_process_now(const char *p, int ret) { |
9bfaffd5 | 391 | _cleanup_free_ char *comm = NULL, *cmdline = NULL; |
9bfaffd5 LP |
392 | int r; |
393 | ||
9bfaffd5 | 394 | r = rename_process(p); |
9bfaffd5 LP |
395 | assert_se(r == ret || |
396 | (ret == 0 && r >= 0) || | |
397 | (ret > 0 && r > 0)); | |
398 | ||
399 | if (r < 0) | |
049c884a | 400 | return; |
9bfaffd5 | 401 | |
349cc4a5 | 402 | #if HAVE_VALGRIND_VALGRIND_H |
9bfaffd5 LP |
403 | /* see above, valgrind is weird, we can't verify what we are doing here */ |
404 | if (RUNNING_ON_VALGRIND) | |
049c884a | 405 | return; |
9bfaffd5 LP |
406 | #endif |
407 | ||
408 | assert_se(get_process_comm(0, &comm) >= 0); | |
409 | log_info("comm = <%s>", comm); | |
92f14395 | 410 | assert_se(strneq(comm, p, TASK_COMM_LEN-1)); |
9bfaffd5 | 411 | |
767eab47 YW |
412 | r = get_process_cmdline(0, 0, false, &cmdline); |
413 | assert_se(r >= 0); | |
049c884a JW |
414 | /* we cannot expect cmdline to be renamed properly without privileges */ |
415 | if (geteuid() == 0) { | |
767eab47 YW |
416 | if (r == 0 && detect_container() > 0) |
417 | log_info("cmdline = <%s> (not verified, Running in unprivileged container?)", cmdline); | |
418 | else { | |
419 | log_info("cmdline = <%s>", cmdline); | |
420 | assert_se(strneq(p, cmdline, STRLEN("test-process-util"))); | |
421 | assert_se(startswith(p, cmdline)); | |
422 | } | |
049c884a JW |
423 | } else |
424 | log_info("cmdline = <%s> (not verified)", cmdline); | |
425 | } | |
426 | ||
427 | static void test_rename_process_one(const char *p, int ret) { | |
428 | siginfo_t si; | |
429 | pid_t pid; | |
430 | ||
431 | pid = fork(); | |
432 | assert_se(pid >= 0); | |
433 | ||
434 | if (pid == 0) { | |
435 | /* child */ | |
436 | test_rename_process_now(p, ret); | |
437 | _exit(EXIT_SUCCESS); | |
438 | } | |
439 | ||
440 | assert_se(wait_for_terminate(pid, &si) >= 0); | |
441 | assert_se(si.si_code == CLD_EXITED); | |
442 | assert_se(si.si_status == EXIT_SUCCESS); | |
443 | } | |
444 | ||
445 | static void test_rename_process_multi(void) { | |
446 | pid_t pid; | |
447 | ||
448 | pid = fork(); | |
449 | assert_se(pid >= 0); | |
9bfaffd5 | 450 | |
049c884a JW |
451 | if (pid > 0) { |
452 | siginfo_t si; | |
453 | ||
454 | assert_se(wait_for_terminate(pid, &si) >= 0); | |
455 | assert_se(si.si_code == CLD_EXITED); | |
456 | assert_se(si.si_status == EXIT_SUCCESS); | |
457 | ||
458 | return; | |
459 | } | |
460 | ||
461 | /* child */ | |
462 | test_rename_process_now("one", 1); | |
463 | test_rename_process_now("more", 0); /* longer than "one", hence truncated */ | |
c47a9f90 | 464 | (void) setresuid(99, 99, 99); /* change uid when running privileged */ |
049c884a JW |
465 | test_rename_process_now("time!", 0); |
466 | test_rename_process_now("0", 1); /* shorter than "one", should fit */ | |
467 | test_rename_process_one("", -EINVAL); | |
468 | test_rename_process_one(NULL, -EINVAL); | |
9bfaffd5 LP |
469 | _exit(EXIT_SUCCESS); |
470 | } | |
471 | ||
472 | static void test_rename_process(void) { | |
473 | test_rename_process_one(NULL, -EINVAL); | |
474 | test_rename_process_one("", -EINVAL); | |
475 | test_rename_process_one("foo", 1); /* should always fit */ | |
476 | test_rename_process_one("this is a really really long process name, followed by some more words", 0); /* unlikely to fit */ | |
477 | test_rename_process_one("1234567", 1); /* should always fit */ | |
049c884a | 478 | test_rename_process_multi(); /* multiple invocations and dropped privileges */ |
9bfaffd5 LP |
479 | } |
480 | ||
5c30a6d2 LP |
481 | static void test_getpid_cached(void) { |
482 | siginfo_t si; | |
483 | pid_t a, b, c, d, e, f, child; | |
484 | ||
485 | a = raw_getpid(); | |
486 | b = getpid_cached(); | |
487 | c = getpid(); | |
488 | ||
489 | assert_se(a == b && a == c); | |
490 | ||
491 | child = fork(); | |
492 | assert_se(child >= 0); | |
493 | ||
494 | if (child == 0) { | |
495 | /* In child */ | |
496 | a = raw_getpid(); | |
497 | b = getpid_cached(); | |
498 | c = getpid(); | |
499 | ||
500 | assert_se(a == b && a == c); | |
a45d7127 | 501 | _exit(EXIT_SUCCESS); |
5c30a6d2 LP |
502 | } |
503 | ||
504 | d = raw_getpid(); | |
505 | e = getpid_cached(); | |
506 | f = getpid(); | |
507 | ||
508 | assert_se(a == d && a == e && a == f); | |
509 | ||
510 | assert_se(wait_for_terminate(child, &si) >= 0); | |
511 | assert_se(si.si_status == 0); | |
512 | assert_se(si.si_code == CLD_EXITED); | |
513 | } | |
514 | ||
515 | #define MEASURE_ITERATIONS (10000000LLU) | |
516 | ||
517 | static void test_getpid_measure(void) { | |
518 | unsigned long long i; | |
519 | usec_t t, q; | |
520 | ||
521 | t = now(CLOCK_MONOTONIC); | |
522 | for (i = 0; i < MEASURE_ITERATIONS; i++) | |
523 | (void) getpid(); | |
524 | q = now(CLOCK_MONOTONIC) - t; | |
525 | ||
526 | log_info(" glibc getpid(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q)); | |
527 | ||
528 | t = now(CLOCK_MONOTONIC); | |
529 | for (i = 0; i < MEASURE_ITERATIONS; i++) | |
530 | (void) getpid_cached(); | |
531 | q = now(CLOCK_MONOTONIC) - t; | |
532 | ||
533 | log_info("getpid_cached(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q)); | |
534 | } | |
535 | ||
4c253ed1 LP |
536 | static void test_safe_fork(void) { |
537 | siginfo_t status; | |
538 | pid_t pid; | |
539 | int r; | |
540 | ||
541 | BLOCK_SIGNALS(SIGCHLD); | |
542 | ||
543 | r = safe_fork("(test-child)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_NULL_STDIO|FORK_REOPEN_LOG, &pid); | |
544 | assert_se(r >= 0); | |
545 | ||
546 | if (r == 0) { | |
547 | /* child */ | |
548 | usleep(100 * USEC_PER_MSEC); | |
549 | ||
550 | _exit(88); | |
551 | } | |
552 | ||
553 | assert_se(wait_for_terminate(pid, &status) >= 0); | |
554 | assert_se(status.si_code == CLD_EXITED); | |
555 | assert_se(status.si_status == 88); | |
556 | } | |
557 | ||
eb5eb254 LP |
558 | static void test_pid_to_ptr(void) { |
559 | ||
560 | assert_se(PTR_TO_PID(NULL) == 0); | |
561 | assert_se(PID_TO_PTR(0) == NULL); | |
562 | ||
563 | assert_se(PTR_TO_PID(PID_TO_PTR(1)) == 1); | |
564 | assert_se(PTR_TO_PID(PID_TO_PTR(2)) == 2); | |
565 | assert_se(PTR_TO_PID(PID_TO_PTR(-1)) == -1); | |
566 | assert_se(PTR_TO_PID(PID_TO_PTR(-2)) == -2); | |
567 | ||
568 | assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MAX)) == INT16_MAX); | |
569 | assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MIN)) == INT16_MIN); | |
570 | ||
571 | #if SIZEOF_PID_T >= 4 | |
572 | assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MAX)) == INT32_MAX); | |
573 | assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MIN)) == INT32_MIN); | |
574 | #endif | |
575 | } | |
576 | ||
10062bbc ZJS |
577 | static void test_ioprio_class_from_to_string_one(const char *val, int expected) { |
578 | assert_se(ioprio_class_from_string(val) == expected); | |
579 | if (expected >= 0) { | |
580 | _cleanup_free_ char *s = NULL; | |
581 | unsigned ret; | |
582 | ||
583 | assert_se(ioprio_class_to_string_alloc(expected, &s) == 0); | |
584 | /* We sometimes get a class number and sometimes a number back */ | |
585 | assert_se(streq(s, val) || | |
586 | safe_atou(val, &ret) == 0); | |
587 | } | |
588 | } | |
9bfaffd5 | 589 | |
10062bbc ZJS |
590 | static void test_ioprio_class_from_to_string(void) { |
591 | test_ioprio_class_from_to_string_one("none", IOPRIO_CLASS_NONE); | |
592 | test_ioprio_class_from_to_string_one("realtime", IOPRIO_CLASS_RT); | |
593 | test_ioprio_class_from_to_string_one("best-effort", IOPRIO_CLASS_BE); | |
594 | test_ioprio_class_from_to_string_one("idle", IOPRIO_CLASS_IDLE); | |
595 | test_ioprio_class_from_to_string_one("0", 0); | |
596 | test_ioprio_class_from_to_string_one("1", 1); | |
597 | test_ioprio_class_from_to_string_one("7", 7); | |
598 | test_ioprio_class_from_to_string_one("8", 8); | |
599 | test_ioprio_class_from_to_string_one("9", -1); | |
600 | test_ioprio_class_from_to_string_one("-1", -1); | |
601 | } | |
602 | ||
603 | int main(int argc, char *argv[]) { | |
6d7c4033 | 604 | test_setup_logging(LOG_DEBUG); |
0b452006 | 605 | |
36fea155 | 606 | save_argc_argv(argc, argv); |
9bfaffd5 | 607 | |
18dade5a ZJS |
608 | if (argc > 1) { |
609 | pid_t pid = 0; | |
610 | ||
611 | (void) parse_pid(argv[1], &pid); | |
612 | test_get_process_comm(pid); | |
613 | } else { | |
76c19e9f | 614 | TEST_REQ_RUNNING_SYSTEMD(test_get_process_comm(1)); |
18dade5a ZJS |
615 | test_get_process_comm(getpid()); |
616 | } | |
617 | ||
ce268825 | 618 | test_get_process_comm_escape(); |
0b452006 RC |
619 | test_pid_is_unwaited(); |
620 | test_pid_is_alive(); | |
26fbedd7 | 621 | test_personality(); |
69281c49 | 622 | test_get_process_cmdline_harder(); |
9bfaffd5 | 623 | test_rename_process(); |
5c30a6d2 LP |
624 | test_getpid_cached(); |
625 | test_getpid_measure(); | |
4c253ed1 | 626 | test_safe_fork(); |
eb5eb254 | 627 | test_pid_to_ptr(); |
10062bbc | 628 | test_ioprio_class_from_to_string(); |
0b452006 RC |
629 | |
630 | return 0; | |
631 | } |