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basic/process-util: convert bool arg to flags
[thirdparty/systemd.git] / src / test / test-process-util.c
CommitLineData
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 32static 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
09c1dcee 51 assert_se(get_process_cmdline(pid, 0, PROCESS_CMDLINE_COMM_FALLBACK, &c) >= 0);
9a140c35 52 log_info("PID"PID_FMT" cmdline: '%s'", pid, c);
0b452006 53
09c1dcee 54 assert_se(get_process_cmdline(pid, 8, 0, &d) >= 0);
69281c49
LP		 55 log_info("PID"PID_FMT" cmdline truncated to 8: '%s'", pid, d);
56
57 free(d);
09c1dcee 58 assert_se(get_process_cmdline(pid, 1, 0, &d) >= 0);
69281c49 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		 88static 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
101static 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");
0e85cbcf
ZJS		 110 test_get_process_comm_escape_one("äöüß", "\\303\\244\\303\\266\\303\\274\\303\\237");
111 test_get_process_comm_escape_one("xäöüß", "x\\303\\244\\303\\266\\303\\274\\303\\237");
112 test_get_process_comm_escape_one("xxäöüß", "xx\\303\\244\\303\\266\\303\\274\\303\\237");
113 test_get_process_comm_escape_one("xxxäöüß", "xxx\\303\\244\\303\\266\\303\\274\\303\\237");
114 test_get_process_comm_escape_one("xxxxäöüß", "xxxx\\303\\244\\303\\266\\303\\274\\303\\237");
115 test_get_process_comm_escape_one("xxxxxäöüß", "xxxxx\\303\\244\\303\\266\\303\\274\\303\\237");
ce268825
LP		 116
117 assert_se(prctl(PR_SET_NAME, saved) >= 0);
118}
119
0b452006
RC		 120static 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
137static 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		 154static 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		 177static 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
09c1dcee 240 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, 0, &line) == -ENOENT);
69281c49 241
09c1dcee 242 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 243 assert_se(streq(line, "[testa]"));
244 line = mfree(line);
245
09c1dcee 246 assert_se(get_process_cmdline(getpid_cached(), 0, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 247 log_info("'%s'", line);
69281c49
LP		 248 assert_se(streq(line, ""));
249 line = mfree(line);
250
09c1dcee 251 assert_se(get_process_cmdline(getpid_cached(), 1, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e
ZJS		 252 assert_se(streq(line, "…"));
253 line = mfree(line);
254
09c1dcee 255 assert_se(get_process_cmdline(getpid_cached(), 2, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 256 assert_se(streq(line, "[…"));
69281c49
LP		 257 line = mfree(line);
258
09c1dcee 259 assert_se(get_process_cmdline(getpid_cached(), 3, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 260 assert_se(streq(line, "[t…"));
69281c49
LP		 261 line = mfree(line);
262
09c1dcee 263 assert_se(get_process_cmdline(getpid_cached(), 4, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 264 assert_se(streq(line, "[te…"));
69281c49
LP		 265 line = mfree(line);
266
09c1dcee 267 assert_se(get_process_cmdline(getpid_cached(), 5, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 268 assert_se(streq(line, "[tes…"));
69281c49
LP		 269 line = mfree(line);
270
09c1dcee 271 assert_se(get_process_cmdline(getpid_cached(), 6, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 272 assert_se(streq(line, "[test…"));
69281c49
LP		 273 line = mfree(line);
274
09c1dcee 275 assert_se(get_process_cmdline(getpid_cached(), 7, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 276 assert_se(streq(line, "[testa]"));
277 line = mfree(line);
278
09c1dcee 279 assert_se(get_process_cmdline(getpid_cached(), 8, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 280 assert_se(streq(line, "[testa]"));
281 line = mfree(line);
282
bc28751e 283 assert_se(write(fd, "foo\0bar", 8) == 8);
69281c49 284
09c1dcee 285 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, 0, &line) >= 0);
bc28751e 286 log_info("'%s'", line);
69281c49
LP		 287 assert_se(streq(line, "foo bar"));
288 line = mfree(line);
289
09c1dcee 290 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 291 assert_se(streq(line, "foo bar"));
292 line = mfree(line);
293
294 assert_se(write(fd, "quux", 4) == 4);
09c1dcee 295 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, 0, &line) >= 0);
bc28751e 296 log_info("'%s'", line);
69281c49
LP		 297 assert_se(streq(line, "foo bar quux"));
298 line = mfree(line);
299
09c1dcee 300 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 301 assert_se(streq(line, "foo bar quux"));
302 line = mfree(line);
303
09c1dcee 304 assert_se(get_process_cmdline(getpid_cached(), 1, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 305 assert_se(streq(line, "…"));
69281c49
LP		 306 line = mfree(line);
307
09c1dcee 308 assert_se(get_process_cmdline(getpid_cached(), 2, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 309 assert_se(streq(line, "f…"));
69281c49
LP		 310 line = mfree(line);
311
09c1dcee 312 assert_se(get_process_cmdline(getpid_cached(), 3, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 313 assert_se(streq(line, "fo…"));
69281c49
LP		 314 line = mfree(line);
315
09c1dcee 316 assert_se(get_process_cmdline(getpid_cached(), 4, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 317 assert_se(streq(line, "foo…"));
69281c49
LP		 318 line = mfree(line);
319
09c1dcee 320 assert_se(get_process_cmdline(getpid_cached(), 5, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 321 assert_se(streq(line, "foo …"));
69281c49
LP		 322 line = mfree(line);
323
09c1dcee 324 assert_se(get_process_cmdline(getpid_cached(), 6, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 325 assert_se(streq(line, "foo b…"));
69281c49
LP		 326 line = mfree(line);
327
09c1dcee 328 assert_se(get_process_cmdline(getpid_cached(), 7, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 329 assert_se(streq(line, "foo ba…"));
69281c49
LP		 330 line = mfree(line);
331
09c1dcee 332 assert_se(get_process_cmdline(getpid_cached(), 8, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 333 assert_se(streq(line, "foo bar…"));
69281c49
LP		 334 line = mfree(line);
335
09c1dcee 336 assert_se(get_process_cmdline(getpid_cached(), 9, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 337 assert_se(streq(line, "foo bar …"));
69281c49
LP		 338 line = mfree(line);
339
09c1dcee 340 assert_se(get_process_cmdline(getpid_cached(), 10, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 341 assert_se(streq(line, "foo bar q…"));
69281c49
LP		 342 line = mfree(line);
343
09c1dcee 344 assert_se(get_process_cmdline(getpid_cached(), 11, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 345 assert_se(streq(line, "foo bar qu…"));
69281c49
LP		 346 line = mfree(line);
347
09c1dcee 348 assert_se(get_process_cmdline(getpid_cached(), 12, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 349 assert_se(streq(line, "foo bar quux"));
69281c49
LP		 350 line = mfree(line);
351
09c1dcee 352 assert_se(get_process_cmdline(getpid_cached(), 13, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 353 assert_se(streq(line, "foo bar quux"));
354 line = mfree(line);
355
09c1dcee 356 assert_se(get_process_cmdline(getpid_cached(), 14, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 357 assert_se(streq(line, "foo bar quux"));
358 line = mfree(line);
359
09c1dcee 360 assert_se(get_process_cmdline(getpid_cached(), 1000, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 361 assert_se(streq(line, "foo bar quux"));
362 line = mfree(line);
363
364 assert_se(ftruncate(fd, 0) >= 0);
365 assert_se(prctl(PR_SET_NAME, "aaaa bbbb cccc") >= 0);
366
09c1dcee 367 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, 0, &line) == -ENOENT);
69281c49 368
09c1dcee 369 assert_se(get_process_cmdline(getpid_cached(), SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
69281c49
LP		 370 assert_se(streq(line, "[aaaa bbbb cccc]"));
371 line = mfree(line);
372
09c1dcee 373 assert_se(get_process_cmdline(getpid_cached(), 10, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 374 assert_se(streq(line, "[aaaa bbb…"));
69281c49
LP		 375 line = mfree(line);
376
09c1dcee 377 assert_se(get_process_cmdline(getpid_cached(), 11, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 378 assert_se(streq(line, "[aaaa bbbb…"));
69281c49
LP		 379 line = mfree(line);
380
09c1dcee 381 assert_se(get_process_cmdline(getpid_cached(), 12, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0);
bc28751e 382 assert_se(streq(line, "[aaaa bbbb …"));
69281c49
LP		 383 line = mfree(line);
384
385 safe_close(fd);
a45d7127 386 _exit(EXIT_SUCCESS);
69281c49
LP		 387}
388
049c884a 389static void test_rename_process_now(const char *p, int ret) {
9bfaffd5 390 _cleanup_free_ char *comm = NULL, *cmdline = NULL;
9bfaffd5
LP		 391 int r;
392
9bfaffd5 393 r = rename_process(p);
9bfaffd5
LP		 394 assert_se(r == ret ||
395 (ret == 0 && r >= 0) ||
396 (ret > 0 && r > 0));
397
398 if (r < 0)
049c884a 399 return;
9bfaffd5 400
349cc4a5 401#if HAVE_VALGRIND_VALGRIND_H
9bfaffd5
LP		 402 /* see above, valgrind is weird, we can't verify what we are doing here */
403 if (RUNNING_ON_VALGRIND)
049c884a 404 return;
9bfaffd5
LP		 405#endif
406
407 assert_se(get_process_comm(0, &comm) >= 0);
408 log_info("comm = <%s>", comm);
92f14395 409 assert_se(strneq(comm, p, TASK_COMM_LEN-1));
0e85cbcf
ZJS		 410 /* We expect comm to be at most 16 bytes (TASK_COMM_LEN). The kernel may raise this limit in the
411 * future. We'd only check the initial part, at least until we recompile, but this will still pass. */
9bfaffd5 412
09c1dcee 413 r = get_process_cmdline(0, SIZE_MAX, 0, &cmdline);
767eab47 414 assert_se(r >= 0);
049c884a
JW		 415 /* we cannot expect cmdline to be renamed properly without privileges */
416 if (geteuid() == 0) {
767eab47
YW		 417 if (r == 0 && detect_container() > 0)
418 log_info("cmdline = <%s> (not verified, Running in unprivileged container?)", cmdline);
419 else {
420 log_info("cmdline = <%s>", cmdline);
421 assert_se(strneq(p, cmdline, STRLEN("test-process-util")));
422 assert_se(startswith(p, cmdline));
423 }
049c884a
JW		 424 } else
425 log_info("cmdline = <%s> (not verified)", cmdline);
426}
427
428static void test_rename_process_one(const char *p, int ret) {
429 siginfo_t si;
430 pid_t pid;
431
432 pid = fork();
433 assert_se(pid >= 0);
434
435 if (pid == 0) {
436 /* child */
437 test_rename_process_now(p, ret);
438 _exit(EXIT_SUCCESS);
439 }
440
441 assert_se(wait_for_terminate(pid, &si) >= 0);
442 assert_se(si.si_code == CLD_EXITED);
443 assert_se(si.si_status == EXIT_SUCCESS);
444}
445
446static void test_rename_process_multi(void) {
447 pid_t pid;
448
449 pid = fork();
450 assert_se(pid >= 0);
9bfaffd5 451
049c884a
JW		 452 if (pid > 0) {
453 siginfo_t si;
454
455 assert_se(wait_for_terminate(pid, &si) >= 0);
456 assert_se(si.si_code == CLD_EXITED);
457 assert_se(si.si_status == EXIT_SUCCESS);
458
459 return;
460 }
461
462 /* child */
463 test_rename_process_now("one", 1);
464 test_rename_process_now("more", 0); /* longer than "one", hence truncated */
c47a9f90 465 (void) setresuid(99, 99, 99); /* change uid when running privileged */
049c884a
JW		 466 test_rename_process_now("time!", 0);
467 test_rename_process_now("0", 1); /* shorter than "one", should fit */
468 test_rename_process_one("", -EINVAL);
469 test_rename_process_one(NULL, -EINVAL);
9bfaffd5
LP		 470 _exit(EXIT_SUCCESS);
471}
472
473static void test_rename_process(void) {
474 test_rename_process_one(NULL, -EINVAL);
475 test_rename_process_one("", -EINVAL);
476 test_rename_process_one("foo", 1); /* should always fit */
477 test_rename_process_one("this is a really really long process name, followed by some more words", 0); /* unlikely to fit */
478 test_rename_process_one("1234567", 1); /* should always fit */
049c884a 479 test_rename_process_multi(); /* multiple invocations and dropped privileges */
9bfaffd5
LP		 480}
481
5c30a6d2
LP		 482static void test_getpid_cached(void) {
483 siginfo_t si;
484 pid_t a, b, c, d, e, f, child;
485
486 a = raw_getpid();
487 b = getpid_cached();
488 c = getpid();
489
490 assert_se(a == b && a == c);
491
492 child = fork();
493 assert_se(child >= 0);
494
495 if (child == 0) {
496 /* In child */
497 a = raw_getpid();
498 b = getpid_cached();
499 c = getpid();
500
501 assert_se(a == b && a == c);
a45d7127 502 _exit(EXIT_SUCCESS);
5c30a6d2
LP		 503 }
504
505 d = raw_getpid();
506 e = getpid_cached();
507 f = getpid();
508
509 assert_se(a == d && a == e && a == f);
510
511 assert_se(wait_for_terminate(child, &si) >= 0);
512 assert_se(si.si_status == 0);
513 assert_se(si.si_code == CLD_EXITED);
514}
515
516#define MEASURE_ITERATIONS (10000000LLU)
517
518static void test_getpid_measure(void) {
519 unsigned long long i;
520 usec_t t, q;
521
522 t = now(CLOCK_MONOTONIC);
523 for (i = 0; i < MEASURE_ITERATIONS; i++)
524 (void) getpid();
525 q = now(CLOCK_MONOTONIC) - t;
526
527 log_info(" glibc getpid(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q));
528
529 t = now(CLOCK_MONOTONIC);
530 for (i = 0; i < MEASURE_ITERATIONS; i++)
531 (void) getpid_cached();
532 q = now(CLOCK_MONOTONIC) - t;
533
534 log_info("getpid_cached(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q));
535}
536
4c253ed1
LP		 537static void test_safe_fork(void) {
538 siginfo_t status;
539 pid_t pid;
540 int r;
541
542 BLOCK_SIGNALS(SIGCHLD);
543
544 r = safe_fork("(test-child)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_NULL_STDIO|FORK_REOPEN_LOG, &pid);
545 assert_se(r >= 0);
546
547 if (r == 0) {
548 /* child */
549 usleep(100 * USEC_PER_MSEC);
550
551 _exit(88);
552 }
553
554 assert_se(wait_for_terminate(pid, &status) >= 0);
555 assert_se(status.si_code == CLD_EXITED);
556 assert_se(status.si_status == 88);
557}
558
eb5eb254
LP		 559static void test_pid_to_ptr(void) {
560
561 assert_se(PTR_TO_PID(NULL) == 0);
562 assert_se(PID_TO_PTR(0) == NULL);
563
564 assert_se(PTR_TO_PID(PID_TO_PTR(1)) == 1);
565 assert_se(PTR_TO_PID(PID_TO_PTR(2)) == 2);
566 assert_se(PTR_TO_PID(PID_TO_PTR(-1)) == -1);
567 assert_se(PTR_TO_PID(PID_TO_PTR(-2)) == -2);
568
569 assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MAX)) == INT16_MAX);
570 assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MIN)) == INT16_MIN);
571
572#if SIZEOF_PID_T >= 4
573 assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MAX)) == INT32_MAX);
574 assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MIN)) == INT32_MIN);
575#endif
576}
577
10062bbc
ZJS		 578static void test_ioprio_class_from_to_string_one(const char *val, int expected) {
579 assert_se(ioprio_class_from_string(val) == expected);
580 if (expected >= 0) {
581 _cleanup_free_ char *s = NULL;
582 unsigned ret;
583
584 assert_se(ioprio_class_to_string_alloc(expected, &s) == 0);
585 /* We sometimes get a class number and sometimes a number back */
586 assert_se(streq(s, val) ||
587 safe_atou(val, &ret) == 0);
588 }
589}
9bfaffd5 590
10062bbc
ZJS		 591static void test_ioprio_class_from_to_string(void) {
592 test_ioprio_class_from_to_string_one("none", IOPRIO_CLASS_NONE);
593 test_ioprio_class_from_to_string_one("realtime", IOPRIO_CLASS_RT);
594 test_ioprio_class_from_to_string_one("best-effort", IOPRIO_CLASS_BE);
595 test_ioprio_class_from_to_string_one("idle", IOPRIO_CLASS_IDLE);
596 test_ioprio_class_from_to_string_one("0", 0);
597 test_ioprio_class_from_to_string_one("1", 1);
598 test_ioprio_class_from_to_string_one("7", 7);
599 test_ioprio_class_from_to_string_one("8", 8);
600 test_ioprio_class_from_to_string_one("9", -1);
601 test_ioprio_class_from_to_string_one("-1", -1);
602}
603
604int main(int argc, char *argv[]) {
6d7c4033 605 test_setup_logging(LOG_DEBUG);
0b452006 606
36fea155 607 save_argc_argv(argc, argv);
9bfaffd5 608
18dade5a
ZJS		 609 if (argc > 1) {
610 pid_t pid = 0;
611
612 (void) parse_pid(argv[1], &pid);
613 test_get_process_comm(pid);
614 } else {
76c19e9f 615 TEST_REQ_RUNNING_SYSTEMD(test_get_process_comm(1));
18dade5a
ZJS		 616 test_get_process_comm(getpid());
617 }
618
ce268825 619 test_get_process_comm_escape();
0b452006
RC		 620 test_pid_is_unwaited();
621 test_pid_is_alive();
26fbedd7 622 test_personality();
69281c49 623 test_get_process_cmdline_harder();
9bfaffd5 624 test_rename_process();
5c30a6d2
LP		 625 test_getpid_cached();
626 test_getpid_measure();
4c253ed1 627 test_safe_fork();
eb5eb254 628 test_pid_to_ptr();
10062bbc 629 test_ioprio_class_from_to_string();
0b452006
RC		 630
631 return 0;
632}
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