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 "missing.h"
  21 #include "parse-util.h"
  22 #include "process-util.h"
  23 #include "signal-util.h"
  24 #include "stdio-util.h"
  25 #include "string-util.h"
  26 #include "terminal-util.h"
  27 #include "test-helper.h"
  28 #include "tests.h"
  29 #include "util.h"
  30 #include "virt.h"
  31
  32 static void test_get_process_comm(pid_t pid) {
  33         struct stat st;
  34         _cleanup_free_ char *a = NULL, *c = NULL, *d = NULL, *f = NULL, *i = NULL;
  35         _cleanup_free_ char *env = NULL;
  36         char path[STRLEN("/proc//comm") + DECIMAL_STR_MAX(pid_t)];
  37         pid_t e;
  38         uid_t u;
  39         gid_t g;
  40         dev_t h;
  41         int r;
  42
  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);
  48         } else
  49                 log_warning("%s not exist.", path);
  50
  51         assert_se(get_process_cmdline(pid, 0, true, &c) >= 0);
  52         log_info("PID"PID_FMT" cmdline: '%s'", pid, c);
  53
  54         assert_se(get_process_cmdline(pid, 8, false, &d) >= 0);
  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);
  60
  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);
  64
  65         assert_se(is_kernel_thread(pid) == 0 || pid != 1);
  66
  67         r = get_process_exe(pid, &f);
  68         assert_se(r >= 0 || r == -EACCES);
  69         log_info("PID"PID_FMT" exe: '%s'", pid, strna(f));
  70
  71         assert_se(get_process_uid(pid, &u) == 0);
  72         log_info("PID"PID_FMT" UID: "UID_FMT, pid, u);
  73
  74         assert_se(get_process_gid(pid, &g) == 0);
  75         log_info("PID"PID_FMT" GID: "GID_FMT, pid, g);
  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                 log_info("Skipping %s: not root", __func__);
 185                 return;
 186         }
 187
 188         if (!have_namespaces()) {
 189                 log_notice("Testing without namespaces, skipping %s", __func__);
 190                 return;
 191         }
 192
 193 #if HAVE_VALGRIND_VALGRIND_H
 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 */
 197         if (RUNNING_ON_VALGRIND) {
 198                 log_info("Skipping %s: running on valgrind", __func__);
 199                 return;
 200         }
 201 #endif
 202
 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
 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         }
 223
 224         fd = mkostemp(path, O_CLOEXEC);
 225         assert_se(fd >= 0);
 226
 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. */
 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");
 232                 assert_se(IN_SET(errno, EPERM, EACCES));
 233                 return;
 234         }
 235
 236         assert_se(unlink(path) >= 0);
 237
 238         assert_se(prctl(PR_SET_NAME, "testa") >= 0);
 239
 240         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 241
 242         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 243         assert_se(streq(line, "[testa]"));
 244         line = mfree(line);
 245
 246         assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0);
 247         assert_se(streq(line, ""));
 248         line = mfree(line);
 249
 250         assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0);
 251         assert_se(streq(line, "["));
 252         line = mfree(line);
 253
 254         assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0);
 255         assert_se(streq(line, "[."));
 256         line = mfree(line);
 257
 258         assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0);
 259         assert_se(streq(line, "[.."));
 260         line = mfree(line);
 261
 262         assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0);
 263         assert_se(streq(line, "[..."));
 264         line = mfree(line);
 265
 266         assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0);
 267         assert_se(streq(line, "[...]"));
 268         line = mfree(line);
 269
 270         assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0);
 271         assert_se(streq(line, "[t...]"));
 272         line = mfree(line);
 273
 274         assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0);
 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
 280         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 281
 282         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 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
 288         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0);
 289         assert_se(streq(line, "foo bar"));
 290         line = mfree(line);
 291
 292         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 293         assert_se(streq(line, "foo bar"));
 294         line = mfree(line);
 295
 296         assert_se(write(fd, "quux", 4) == 4);
 297         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0);
 298         assert_se(streq(line, "foo bar quux"));
 299         line = mfree(line);
 300
 301         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 302         assert_se(streq(line, "foo bar quux"));
 303         line = mfree(line);
 304
 305         assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0);
 306         assert_se(streq(line, ""));
 307         line = mfree(line);
 308
 309         assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0);
 310         assert_se(streq(line, "."));
 311         line = mfree(line);
 312
 313         assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0);
 314         assert_se(streq(line, ".."));
 315         line = mfree(line);
 316
 317         assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0);
 318         assert_se(streq(line, "..."));
 319         line = mfree(line);
 320
 321         assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0);
 322         assert_se(streq(line, "f..."));
 323         line = mfree(line);
 324
 325         assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0);
 326         assert_se(streq(line, "fo..."));
 327         line = mfree(line);
 328
 329         assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0);
 330         assert_se(streq(line, "foo..."));
 331         line = mfree(line);
 332
 333         assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0);
 334         assert_se(streq(line, "foo..."));
 335         line = mfree(line);
 336
 337         assert_se(get_process_cmdline(getpid_cached(), 9, true, &line) >= 0);
 338         assert_se(streq(line, "foo b..."));
 339         line = mfree(line);
 340
 341         assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0);
 342         assert_se(streq(line, "foo ba..."));
 343         line = mfree(line);
 344
 345         assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0);
 346         assert_se(streq(line, "foo bar..."));
 347         line = mfree(line);
 348
 349         assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0);
 350         assert_se(streq(line, "foo bar..."));
 351         line = mfree(line);
 352
 353         assert_se(get_process_cmdline(getpid_cached(), 13, true, &line) >= 0);
 354         assert_se(streq(line, "foo bar quux"));
 355         line = mfree(line);
 356
 357         assert_se(get_process_cmdline(getpid_cached(), 14, true, &line) >= 0);
 358         assert_se(streq(line, "foo bar quux"));
 359         line = mfree(line);
 360
 361         assert_se(get_process_cmdline(getpid_cached(), 1000, true, &line) >= 0);
 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
 368         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 369
 370         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 371         assert_se(streq(line, "[aaaa bbbb cccc]"));
 372         line = mfree(line);
 373
 374         assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0);
 375         assert_se(streq(line, "[aaaa...]"));
 376         line = mfree(line);
 377
 378         assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0);
 379         assert_se(streq(line, "[aaaa...]"));
 380         line = mfree(line);
 381
 382         assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0);
 383         assert_se(streq(line, "[aaaa b...]"));
 384         line = mfree(line);
 385
 386         safe_close(fd);
 387         _exit(EXIT_SUCCESS);
 388 }
 389
 390 static void test_rename_process_now(const char *p, int ret) {
 391         _cleanup_free_ char *comm = NULL, *cmdline = NULL;
 392         int r;
 393
 394         r = rename_process(p);
 395         assert_se(r == ret ||
 396                   (ret == 0 && r >= 0) ||
 397                   (ret > 0 && r > 0));
 398
 399         if (r < 0)
 400                 return;
 401
 402 #if HAVE_VALGRIND_VALGRIND_H
 403         /* see above, valgrind is weird, we can't verify what we are doing here */
 404         if (RUNNING_ON_VALGRIND)
 405                 return;
 406 #endif
 407
 408         assert_se(get_process_comm(0, &comm) >= 0);
 409         log_info("comm = <%s>", comm);
 410         assert_se(strneq(comm, p, TASK_COMM_LEN-1));
 411
 412         r = get_process_cmdline(0, 0, false, &cmdline);
 413         assert_se(r >= 0);
 414         /* we cannot expect cmdline to be renamed properly without privileges */
 415         if (geteuid() == 0) {
 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                 }
 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);
 450
 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 */
 464         (void) setresuid(99, 99, 99); /* change uid when running privileged */
 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);
 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 */
 478         test_rename_process_multi(); /* multiple invocations and dropped privileges */
 479 }
 480
 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);
 501                 _exit(EXIT_SUCCESS);
 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
 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
 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
 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 }
 589
 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[]) {
 604         test_setup_logging(LOG_DEBUG);
 605
 606         save_argc_argv(argc, argv);
 607
 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 {
 614                 TEST_REQ_RUNNING_SYSTEMD(test_get_process_comm(1));
 615                 test_get_process_comm(getpid());
 616         }
 617
 618         test_get_process_comm_escape();
 619         test_pid_is_unwaited();
 620         test_pid_is_alive();
 621         test_personality();
 622         test_get_process_cmdline_harder();
 623         test_rename_process();
 624         test_getpid_cached();
 625         test_getpid_measure();
 626         test_safe_fork();
 627         test_pid_to_ptr();
 628         test_ioprio_class_from_to_string();
 629
 630         return 0;
 631 }