src/test/test-process-util.c

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