src/test/test-process-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright 2010 Lennart Poettering
   4   Copyright 2013 Thomas H.P. Andersen
   5 ***/
   6
   7 #include <sched.h>
   8 #include <sys/mount.h>
   9 #include <sys/personality.h>
  10 #include <sys/prctl.h>
  11 #include <sys/stat.h>
  12 #include <sys/types.h>
  13 #include <sys/wait.h>
  14 #include <unistd.h>
  15 #if HAVE_VALGRIND_VALGRIND_H
  16 #include <valgrind/valgrind.h>
  17 #endif
  18
  19 #include "alloc-util.h"
  20 #include "architecture.h"
  21 #include "fd-util.h"
  22 #include "log.h"
  23 #include "macro.h"
  24 #include "parse-util.h"
  25 #include "process-util.h"
  26 #include "signal-util.h"
  27 #include "stdio-util.h"
  28 #include "string-util.h"
  29 #include "terminal-util.h"
  30 #include "test-helper.h"
  31 #include "util.h"
  32 #include "virt.h"
  33
  34 static void test_get_process_comm(pid_t pid) {
  35         struct stat st;
  36         _cleanup_free_ char *a = NULL, *c = NULL, *d = NULL, *f = NULL, *i = NULL;
  37         _cleanup_free_ char *env = NULL;
  38         char path[STRLEN("/proc//comm") + DECIMAL_STR_MAX(pid_t)];
  39         pid_t e;
  40         uid_t u;
  41         gid_t g;
  42         dev_t h;
  43         int r;
  44
  45         xsprintf(path, "/proc/"PID_FMT"/comm", pid);
  46
  47         if (stat(path, &st) == 0) {
  48                 assert_se(get_process_comm(pid, &a) >= 0);
  49                 log_info("PID"PID_FMT" comm: '%s'", pid, a);
  50         } else
  51                 log_warning("%s not exist.", path);
  52
  53         assert_se(get_process_cmdline(pid, 0, true, &c) >= 0);
  54         log_info("PID"PID_FMT" cmdline: '%s'", pid, c);
  55
  56         assert_se(get_process_cmdline(pid, 8, false, &d) >= 0);
  57         log_info("PID"PID_FMT" cmdline truncated to 8: '%s'", pid, d);
  58
  59         free(d);
  60         assert_se(get_process_cmdline(pid, 1, false, &d) >= 0);
  61         log_info("PID"PID_FMT" cmdline truncated to 1: '%s'", pid, d);
  62
  63         assert_se(get_process_ppid(pid, &e) >= 0);
  64         log_info("PID"PID_FMT" PPID: "PID_FMT, pid, e);
  65         assert_se(pid == 1 ? e == 0 : e > 0);
  66
  67         assert_se(is_kernel_thread(pid) == 0 || pid != 1);
  68
  69         r = get_process_exe(pid, &f);
  70         assert_se(r >= 0 || r == -EACCES);
  71         log_info("PID"PID_FMT" exe: '%s'", pid, strna(f));
  72
  73         assert_se(get_process_uid(pid, &u) == 0);
  74         log_info("PID"PID_FMT" UID: "UID_FMT, pid, u);
  75         assert_se(u == 0 || pid != 1);
  76
  77         assert_se(get_process_gid(pid, &g) == 0);
  78         log_info("PID"PID_FMT" GID: "GID_FMT, pid, g);
  79         assert_se(g == 0 || pid != 1);
  80
  81         r = get_process_environ(pid, &env);
  82         assert_se(r >= 0 || r == -EACCES);
  83         log_info("PID"PID_FMT" strlen(environ): %zi", pid, env ? (ssize_t)strlen(env) : (ssize_t)-errno);
  84
  85         if (!detect_container())
  86                 assert_se(get_ctty_devnr(pid, &h) == -ENXIO || pid != 1);
  87
  88         (void) getenv_for_pid(pid, "PATH", &i);
  89         log_info("PID"PID_FMT" $PATH: '%s'", pid, strna(i));
  90 }
  91
  92 static void test_get_process_comm_escape_one(const char *input, const char *output) {
  93         _cleanup_free_ char *n = NULL;
  94
  95         log_info("input: <%s> — output: <%s>", input, output);
  96
  97         assert_se(prctl(PR_SET_NAME, input) >= 0);
  98         assert_se(get_process_comm(0, &n) >= 0);
  99
 100         log_info("got: <%s>", n);
 101
 102         assert_se(streq_ptr(n, output));
 103 }
 104
 105 static void test_get_process_comm_escape(void) {
 106         _cleanup_free_ char *saved = NULL;
 107
 108         assert_se(get_process_comm(0, &saved) >= 0);
 109
 110         test_get_process_comm_escape_one("", "");
 111         test_get_process_comm_escape_one("foo", "foo");
 112         test_get_process_comm_escape_one("012345678901234", "012345678901234");
 113         test_get_process_comm_escape_one("0123456789012345", "012345678901234");
 114         test_get_process_comm_escape_one("äöüß", "\\303\\244\\303…");
 115         test_get_process_comm_escape_one("xäöüß", "x\\303\\244…");
 116         test_get_process_comm_escape_one("xxäöüß", "xx\\303\\244…");
 117         test_get_process_comm_escape_one("xxxäöüß", "xxx\\303\\244…");
 118         test_get_process_comm_escape_one("xxxxäöüß", "xxxx\\303\\244…");
 119         test_get_process_comm_escape_one("xxxxxäöüß", "xxxxx\\303…");
 120
 121         assert_se(prctl(PR_SET_NAME, saved) >= 0);
 122 }
 123
 124 static void test_pid_is_unwaited(void) {
 125         pid_t pid;
 126
 127         pid = fork();
 128         assert_se(pid >= 0);
 129         if (pid == 0) {
 130                 _exit(EXIT_SUCCESS);
 131         } else {
 132                 int status;
 133
 134                 waitpid(pid, &status, 0);
 135                 assert_se(!pid_is_unwaited(pid));
 136         }
 137         assert_se(pid_is_unwaited(getpid_cached()));
 138         assert_se(!pid_is_unwaited(-1));
 139 }
 140
 141 static void test_pid_is_alive(void) {
 142         pid_t pid;
 143
 144         pid = fork();
 145         assert_se(pid >= 0);
 146         if (pid == 0) {
 147                 _exit(EXIT_SUCCESS);
 148         } else {
 149                 int status;
 150
 151                 waitpid(pid, &status, 0);
 152                 assert_se(!pid_is_alive(pid));
 153         }
 154         assert_se(pid_is_alive(getpid_cached()));
 155         assert_se(!pid_is_alive(-1));
 156 }
 157
 158 static void test_personality(void) {
 159
 160         assert_se(personality_to_string(PER_LINUX));
 161         assert_se(!personality_to_string(PERSONALITY_INVALID));
 162
 163         assert_se(streq(personality_to_string(PER_LINUX), architecture_to_string(native_architecture())));
 164
 165         assert_se(personality_from_string(personality_to_string(PER_LINUX)) == PER_LINUX);
 166         assert_se(personality_from_string(architecture_to_string(native_architecture())) == PER_LINUX);
 167
 168 #ifdef __x86_64__
 169         assert_se(streq_ptr(personality_to_string(PER_LINUX), "x86-64"));
 170         assert_se(streq_ptr(personality_to_string(PER_LINUX32), "x86"));
 171
 172         assert_se(personality_from_string("x86-64") == PER_LINUX);
 173         assert_se(personality_from_string("x86") == PER_LINUX32);
 174         assert_se(personality_from_string("ia64") == PERSONALITY_INVALID);
 175         assert_se(personality_from_string(NULL) == PERSONALITY_INVALID);
 176
 177         assert_se(personality_from_string(personality_to_string(PER_LINUX32)) == PER_LINUX32);
 178 #endif
 179 }
 180
 181 static void test_get_process_cmdline_harder(void) {
 182         char path[] = "/tmp/test-cmdlineXXXXXX";
 183         _cleanup_close_ int fd = -1;
 184         _cleanup_free_ char *line = NULL;
 185         pid_t pid;
 186
 187         if (geteuid() != 0)
 188                 return;
 189
 190 #if HAVE_VALGRIND_VALGRIND_H
 191         /* valgrind patches open(/proc//cmdline)
 192          * so, test_get_process_cmdline_harder fails always
 193          * See https://github.com/systemd/systemd/pull/3555#issuecomment-226564908 */
 194         if (RUNNING_ON_VALGRIND)
 195                 return;
 196 #endif
 197
 198         pid = fork();
 199         if (pid > 0) {
 200                 siginfo_t si;
 201
 202                 (void) wait_for_terminate(pid, &si);
 203
 204                 assert_se(si.si_code == CLD_EXITED);
 205                 assert_se(si.si_status == 0);
 206
 207                 return;
 208         }
 209
 210         assert_se(pid == 0);
 211         assert_se(unshare(CLONE_NEWNS) >= 0);
 212
 213         assert_se(mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) >= 0);
 214
 215         fd = mkostemp(path, O_CLOEXEC);
 216         assert_se(fd >= 0);
 217
 218         if (mount(path, "/proc/self/cmdline", "bind", MS_BIND, NULL) < 0) {
 219                 /* This happens under selinux… Abort the test in this case. */
 220                 log_warning_errno(errno, "mount(..., \"/proc/self/cmdline\", \"bind\", ...) failed: %m");
 221                 assert(errno == EACCES);
 222                 return;
 223         }
 224
 225         assert_se(unlink(path) >= 0);
 226
 227         assert_se(prctl(PR_SET_NAME, "testa") >= 0);
 228
 229         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 230
 231         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 232         assert_se(streq(line, "[testa]"));
 233         line = mfree(line);
 234
 235         assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0);
 236         assert_se(streq(line, ""));
 237         line = mfree(line);
 238
 239         assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0);
 240         assert_se(streq(line, "["));
 241         line = mfree(line);
 242
 243         assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0);
 244         assert_se(streq(line, "[."));
 245         line = mfree(line);
 246
 247         assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0);
 248         assert_se(streq(line, "[.."));
 249         line = mfree(line);
 250
 251         assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0);
 252         assert_se(streq(line, "[..."));
 253         line = mfree(line);
 254
 255         assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0);
 256         assert_se(streq(line, "[...]"));
 257         line = mfree(line);
 258
 259         assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0);
 260         assert_se(streq(line, "[t...]"));
 261         line = mfree(line);
 262
 263         assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0);
 264         assert_se(streq(line, "[testa]"));
 265         line = mfree(line);
 266
 267         assert_se(write(fd, "\0\0\0\0\0\0\0\0\0", 10) == 10);
 268
 269         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 270
 271         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 272         assert_se(streq(line, "[testa]"));
 273         line = mfree(line);
 274
 275         assert_se(write(fd, "foo\0bar\0\0\0\0\0", 10) == 10);
 276
 277         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0);
 278         assert_se(streq(line, "foo bar"));
 279         line = mfree(line);
 280
 281         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 282         assert_se(streq(line, "foo bar"));
 283         line = mfree(line);
 284
 285         assert_se(write(fd, "quux", 4) == 4);
 286         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0);
 287         assert_se(streq(line, "foo bar quux"));
 288         line = mfree(line);
 289
 290         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 291         assert_se(streq(line, "foo bar quux"));
 292         line = mfree(line);
 293
 294         assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0);
 295         assert_se(streq(line, ""));
 296         line = mfree(line);
 297
 298         assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0);
 299         assert_se(streq(line, "."));
 300         line = mfree(line);
 301
 302         assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0);
 303         assert_se(streq(line, ".."));
 304         line = mfree(line);
 305
 306         assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0);
 307         assert_se(streq(line, "..."));
 308         line = mfree(line);
 309
 310         assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0);
 311         assert_se(streq(line, "f..."));
 312         line = mfree(line);
 313
 314         assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0);
 315         assert_se(streq(line, "fo..."));
 316         line = mfree(line);
 317
 318         assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0);
 319         assert_se(streq(line, "foo..."));
 320         line = mfree(line);
 321
 322         assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0);
 323         assert_se(streq(line, "foo..."));
 324         line = mfree(line);
 325
 326         assert_se(get_process_cmdline(getpid_cached(), 9, true, &line) >= 0);
 327         assert_se(streq(line, "foo b..."));
 328         line = mfree(line);
 329
 330         assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0);
 331         assert_se(streq(line, "foo ba..."));
 332         line = mfree(line);
 333
 334         assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0);
 335         assert_se(streq(line, "foo bar..."));
 336         line = mfree(line);
 337
 338         assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0);
 339         assert_se(streq(line, "foo bar..."));
 340         line = mfree(line);
 341
 342         assert_se(get_process_cmdline(getpid_cached(), 13, true, &line) >= 0);
 343         assert_se(streq(line, "foo bar quux"));
 344         line = mfree(line);
 345
 346         assert_se(get_process_cmdline(getpid_cached(), 14, true, &line) >= 0);
 347         assert_se(streq(line, "foo bar quux"));
 348         line = mfree(line);
 349
 350         assert_se(get_process_cmdline(getpid_cached(), 1000, true, &line) >= 0);
 351         assert_se(streq(line, "foo bar quux"));
 352         line = mfree(line);
 353
 354         assert_se(ftruncate(fd, 0) >= 0);
 355         assert_se(prctl(PR_SET_NAME, "aaaa bbbb cccc") >= 0);
 356
 357         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 358
 359         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 360         assert_se(streq(line, "[aaaa bbbb cccc]"));
 361         line = mfree(line);
 362
 363         assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0);
 364         assert_se(streq(line, "[aaaa...]"));
 365         line = mfree(line);
 366
 367         assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0);
 368         assert_se(streq(line, "[aaaa...]"));
 369         line = mfree(line);
 370
 371         assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0);
 372         assert_se(streq(line, "[aaaa b...]"));
 373         line = mfree(line);
 374
 375         safe_close(fd);
 376         _exit(EXIT_SUCCESS);
 377 }
 378
 379 static void test_rename_process_now(const char *p, int ret) {
 380         _cleanup_free_ char *comm = NULL, *cmdline = NULL;
 381         int r;
 382
 383         r = rename_process(p);
 384         assert_se(r == ret ||
 385                   (ret == 0 && r >= 0) ||
 386                   (ret > 0 && r > 0));
 387
 388         if (r < 0)
 389                 return;
 390
 391 #if HAVE_VALGRIND_VALGRIND_H
 392         /* see above, valgrind is weird, we can't verify what we are doing here */
 393         if (RUNNING_ON_VALGRIND)
 394                 return;
 395 #endif
 396
 397         assert_se(get_process_comm(0, &comm) >= 0);
 398         log_info("comm = <%s>", comm);
 399         assert_se(strneq(comm, p, TASK_COMM_LEN-1));
 400
 401         assert_se(get_process_cmdline(0, 0, false, &cmdline) >= 0);
 402         /* we cannot expect cmdline to be renamed properly without privileges */
 403         if (geteuid() == 0) {
 404                 log_info("cmdline = <%s>", cmdline);
 405                 assert_se(strneq(p, cmdline, STRLEN("test-process-util")));
 406                 assert_se(startswith(p, cmdline));
 407         } else
 408                 log_info("cmdline = <%s> (not verified)", cmdline);
 409 }
 410
 411 static void test_rename_process_one(const char *p, int ret) {
 412         siginfo_t si;
 413         pid_t pid;
 414
 415         pid = fork();
 416         assert_se(pid >= 0);
 417
 418         if (pid == 0) {
 419                 /* child */
 420                 test_rename_process_now(p, ret);
 421                 _exit(EXIT_SUCCESS);
 422         }
 423
 424         assert_se(wait_for_terminate(pid, &si) >= 0);
 425         assert_se(si.si_code == CLD_EXITED);
 426         assert_se(si.si_status == EXIT_SUCCESS);
 427 }
 428
 429 static void test_rename_process_multi(void) {
 430         pid_t pid;
 431
 432         pid = fork();
 433         assert_se(pid >= 0);
 434
 435         if (pid > 0) {
 436                 siginfo_t si;
 437
 438                 assert_se(wait_for_terminate(pid, &si) >= 0);
 439                 assert_se(si.si_code == CLD_EXITED);
 440                 assert_se(si.si_status == EXIT_SUCCESS);
 441
 442                 return;
 443         }
 444
 445         /* child */
 446         test_rename_process_now("one", 1);
 447         test_rename_process_now("more", 0); /* longer than "one", hence truncated */
 448         (void) setresuid(99, 99, 99); /* change uid when running privileged */
 449         test_rename_process_now("time!", 0);
 450         test_rename_process_now("0", 1); /* shorter than "one", should fit */
 451         test_rename_process_one("", -EINVAL);
 452         test_rename_process_one(NULL, -EINVAL);
 453         _exit(EXIT_SUCCESS);
 454 }
 455
 456 static void test_rename_process(void) {
 457         test_rename_process_one(NULL, -EINVAL);
 458         test_rename_process_one("", -EINVAL);
 459         test_rename_process_one("foo", 1); /* should always fit */
 460         test_rename_process_one("this is a really really long process name, followed by some more words", 0); /* unlikely to fit */
 461         test_rename_process_one("1234567", 1); /* should always fit */
 462         test_rename_process_multi(); /* multiple invocations and dropped privileges */
 463 }
 464
 465 static void test_getpid_cached(void) {
 466         siginfo_t si;
 467         pid_t a, b, c, d, e, f, child;
 468
 469         a = raw_getpid();
 470         b = getpid_cached();
 471         c = getpid();
 472
 473         assert_se(a == b && a == c);
 474
 475         child = fork();
 476         assert_se(child >= 0);
 477
 478         if (child == 0) {
 479                 /* In child */
 480                 a = raw_getpid();
 481                 b = getpid_cached();
 482                 c = getpid();
 483
 484                 assert_se(a == b && a == c);
 485                 _exit(EXIT_SUCCESS);
 486         }
 487
 488         d = raw_getpid();
 489         e = getpid_cached();
 490         f = getpid();
 491
 492         assert_se(a == d && a == e && a == f);
 493
 494         assert_se(wait_for_terminate(child, &si) >= 0);
 495         assert_se(si.si_status == 0);
 496         assert_se(si.si_code == CLD_EXITED);
 497 }
 498
 499 #define MEASURE_ITERATIONS (10000000LLU)
 500
 501 static void test_getpid_measure(void) {
 502         unsigned long long i;
 503         usec_t t, q;
 504
 505         t = now(CLOCK_MONOTONIC);
 506         for (i = 0; i < MEASURE_ITERATIONS; i++)
 507                 (void) getpid();
 508         q = now(CLOCK_MONOTONIC) - t;
 509
 510         log_info(" glibc getpid(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q));
 511
 512         t = now(CLOCK_MONOTONIC);
 513         for (i = 0; i < MEASURE_ITERATIONS; i++)
 514                 (void) getpid_cached();
 515         q = now(CLOCK_MONOTONIC) - t;
 516
 517         log_info("getpid_cached(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q));
 518 }
 519
 520 static void test_safe_fork(void) {
 521         siginfo_t status;
 522         pid_t pid;
 523         int r;
 524
 525         BLOCK_SIGNALS(SIGCHLD);
 526
 527         r = safe_fork("(test-child)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_NULL_STDIO|FORK_REOPEN_LOG, &pid);
 528         assert_se(r >= 0);
 529
 530         if (r == 0) {
 531                 /* child */
 532                 usleep(100 * USEC_PER_MSEC);
 533
 534                 _exit(88);
 535         }
 536
 537         assert_se(wait_for_terminate(pid, &status) >= 0);
 538         assert_se(status.si_code == CLD_EXITED);
 539         assert_se(status.si_status == 88);
 540 }
 541
 542 static void test_pid_to_ptr(void) {
 543
 544         assert_se(PTR_TO_PID(NULL) == 0);
 545         assert_se(PID_TO_PTR(0) == NULL);
 546
 547         assert_se(PTR_TO_PID(PID_TO_PTR(1)) == 1);
 548         assert_se(PTR_TO_PID(PID_TO_PTR(2)) == 2);
 549         assert_se(PTR_TO_PID(PID_TO_PTR(-1)) == -1);
 550         assert_se(PTR_TO_PID(PID_TO_PTR(-2)) == -2);
 551
 552         assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MAX)) == INT16_MAX);
 553         assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MIN)) == INT16_MIN);
 554
 555 #if SIZEOF_PID_T >= 4
 556         assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MAX)) == INT32_MAX);
 557         assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MIN)) == INT32_MIN);
 558 #endif
 559 }
 560
 561 static void test_ioprio_class_from_to_string_one(const char *val, int expected) {
 562         assert_se(ioprio_class_from_string(val) == expected);
 563         if (expected >= 0) {
 564                 _cleanup_free_ char *s = NULL;
 565                 unsigned ret;
 566
 567                 assert_se(ioprio_class_to_string_alloc(expected, &s) == 0);
 568                 /* We sometimes get a class number and sometimes a number back */
 569                 assert_se(streq(s, val) ||
 570                           safe_atou(val, &ret) == 0);
 571         }
 572 }
 573
 574 static void test_ioprio_class_from_to_string(void) {
 575         test_ioprio_class_from_to_string_one("none", IOPRIO_CLASS_NONE);
 576         test_ioprio_class_from_to_string_one("realtime", IOPRIO_CLASS_RT);
 577         test_ioprio_class_from_to_string_one("best-effort", IOPRIO_CLASS_BE);
 578         test_ioprio_class_from_to_string_one("idle", IOPRIO_CLASS_IDLE);
 579         test_ioprio_class_from_to_string_one("0", 0);
 580         test_ioprio_class_from_to_string_one("1", 1);
 581         test_ioprio_class_from_to_string_one("7", 7);
 582         test_ioprio_class_from_to_string_one("8", 8);
 583         test_ioprio_class_from_to_string_one("9", -1);
 584         test_ioprio_class_from_to_string_one("-1", -1);
 585 }
 586
 587 int main(int argc, char *argv[]) {
 588         log_set_max_level(LOG_DEBUG);
 589         log_parse_environment();
 590         log_open();
 591
 592         saved_argc = argc;
 593         saved_argv = argv;
 594
 595         if (argc > 1) {
 596                 pid_t pid = 0;
 597
 598                 (void) parse_pid(argv[1], &pid);
 599                 test_get_process_comm(pid);
 600         } else {
 601                 TEST_REQ_RUNNING_SYSTEMD(test_get_process_comm(1));
 602                 test_get_process_comm(getpid());
 603         }
 604
 605         test_get_process_comm_escape();
 606         test_pid_is_unwaited();
 607         test_pid_is_alive();
 608         test_personality();
 609         test_get_process_cmdline_harder();
 610         test_rename_process();
 611         test_getpid_cached();
 612         test_getpid_measure();
 613         test_safe_fork();
 614         test_pid_to_ptr();
 615         test_ioprio_class_from_to_string();
 616
 617         return 0;
 618 }