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         assert_se(u == 0 || pid != 1);
  74
  75         assert_se(get_process_gid(pid, &g) == 0);
  76         log_info("PID"PID_FMT" GID: "GID_FMT, pid, g);
  77         assert_se(g == 0 || pid != 1);
  78
  79         r = get_process_environ(pid, &env);
  80         assert_se(r >= 0 || r == -EACCES);
  81         log_info("PID"PID_FMT" strlen(environ): %zi", pid, env ? (ssize_t)strlen(env) : (ssize_t)-errno);
  82
  83         if (!detect_container())
  84                 assert_se(get_ctty_devnr(pid, &h) == -ENXIO || pid != 1);
  85
  86         (void) getenv_for_pid(pid, "PATH", &i);
  87         log_info("PID"PID_FMT" $PATH: '%s'", pid, strna(i));
  88 }
  89
  90 static void test_get_process_comm_escape_one(const char *input, const char *output) {
  91         _cleanup_free_ char *n = NULL;
  92
  93         log_info("input: <%s> — output: <%s>", input, output);
  94
  95         assert_se(prctl(PR_SET_NAME, input) >= 0);
  96         assert_se(get_process_comm(0, &n) >= 0);
  97
  98         log_info("got: <%s>", n);
  99
 100         assert_se(streq_ptr(n, output));
 101 }
 102
 103 static void test_get_process_comm_escape(void) {
 104         _cleanup_free_ char *saved = NULL;
 105
 106         assert_se(get_process_comm(0, &saved) >= 0);
 107
 108         test_get_process_comm_escape_one("", "");
 109         test_get_process_comm_escape_one("foo", "foo");
 110         test_get_process_comm_escape_one("012345678901234", "012345678901234");
 111         test_get_process_comm_escape_one("0123456789012345", "012345678901234");
 112         test_get_process_comm_escape_one("äöüß", "\\303\\244\\303…");
 113         test_get_process_comm_escape_one("xäöüß", "x\\303\\244…");
 114         test_get_process_comm_escape_one("xxäöüß", "xx\\303\\244…");
 115         test_get_process_comm_escape_one("xxxäöüß", "xxx\\303\\244…");
 116         test_get_process_comm_escape_one("xxxxäöüß", "xxxx\\303\\244…");
 117         test_get_process_comm_escape_one("xxxxxäöüß", "xxxxx\\303…");
 118
 119         assert_se(prctl(PR_SET_NAME, saved) >= 0);
 120 }
 121
 122 static void test_pid_is_unwaited(void) {
 123         pid_t pid;
 124
 125         pid = fork();
 126         assert_se(pid >= 0);
 127         if (pid == 0) {
 128                 _exit(EXIT_SUCCESS);
 129         } else {
 130                 int status;
 131
 132                 waitpid(pid, &status, 0);
 133                 assert_se(!pid_is_unwaited(pid));
 134         }
 135         assert_se(pid_is_unwaited(getpid_cached()));
 136         assert_se(!pid_is_unwaited(-1));
 137 }
 138
 139 static void test_pid_is_alive(void) {
 140         pid_t pid;
 141
 142         pid = fork();
 143         assert_se(pid >= 0);
 144         if (pid == 0) {
 145                 _exit(EXIT_SUCCESS);
 146         } else {
 147                 int status;
 148
 149                 waitpid(pid, &status, 0);
 150                 assert_se(!pid_is_alive(pid));
 151         }
 152         assert_se(pid_is_alive(getpid_cached()));
 153         assert_se(!pid_is_alive(-1));
 154 }
 155
 156 static void test_personality(void) {
 157
 158         assert_se(personality_to_string(PER_LINUX));
 159         assert_se(!personality_to_string(PERSONALITY_INVALID));
 160
 161         assert_se(streq(personality_to_string(PER_LINUX), architecture_to_string(native_architecture())));
 162
 163         assert_se(personality_from_string(personality_to_string(PER_LINUX)) == PER_LINUX);
 164         assert_se(personality_from_string(architecture_to_string(native_architecture())) == PER_LINUX);
 165
 166 #ifdef __x86_64__
 167         assert_se(streq_ptr(personality_to_string(PER_LINUX), "x86-64"));
 168         assert_se(streq_ptr(personality_to_string(PER_LINUX32), "x86"));
 169
 170         assert_se(personality_from_string("x86-64") == PER_LINUX);
 171         assert_se(personality_from_string("x86") == PER_LINUX32);
 172         assert_se(personality_from_string("ia64") == PERSONALITY_INVALID);
 173         assert_se(personality_from_string(NULL) == PERSONALITY_INVALID);
 174
 175         assert_se(personality_from_string(personality_to_string(PER_LINUX32)) == PER_LINUX32);
 176 #endif
 177 }
 178
 179 static void test_get_process_cmdline_harder(void) {
 180         char path[] = "/tmp/test-cmdlineXXXXXX";
 181         _cleanup_close_ int fd = -1;
 182         _cleanup_free_ char *line = NULL;
 183         pid_t pid;
 184
 185         if (geteuid() != 0) {
 186                 log_info("Skipping %s: not root", __func__);
 187                 return;
 188         }
 189
 190         if (!have_namespaces()) {
 191                 log_notice("Testing without namespaces, skipping %s", __func__);
 192                 return;
 193         }
 194
 195 #if HAVE_VALGRIND_VALGRIND_H
 196         /* valgrind patches open(/proc//cmdline)
 197          * so, test_get_process_cmdline_harder fails always
 198          * See https://github.com/systemd/systemd/pull/3555#issuecomment-226564908 */
 199         if (RUNNING_ON_VALGRIND) {
 200                 log_info("Skipping %s: running on valgrind", __func__);
 201                 return;
 202         }
 203 #endif
 204
 205         pid = fork();
 206         if (pid > 0) {
 207                 siginfo_t si;
 208
 209                 (void) wait_for_terminate(pid, &si);
 210
 211                 assert_se(si.si_code == CLD_EXITED);
 212                 assert_se(si.si_status == 0);
 213
 214                 return;
 215         }
 216
 217         assert_se(pid == 0);
 218         assert_se(unshare(CLONE_NEWNS) >= 0);
 219
 220         if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) {
 221                 log_warning_errno(errno, "mount(..., \"/\", MS_SLAVE|MS_REC, ...) failed: %m");
 222                 assert_se(IN_SET(errno, EPERM, EACCES));
 223                 return;
 224         }
 225
 226         fd = mkostemp(path, O_CLOEXEC);
 227         assert_se(fd >= 0);
 228
 229         /* Note that we don't unmount the following bind-mount at the end of the test because the kernel
 230          * will clear up its /proc/PID/ hierarchy automatically as soon as the test stops. */
 231         if (mount(path, "/proc/self/cmdline", "bind", MS_BIND, NULL) < 0) {
 232                 /* This happens under selinux… Abort the test in this case. */
 233                 log_warning_errno(errno, "mount(..., \"/proc/self/cmdline\", \"bind\", ...) failed: %m");
 234                 assert_se(IN_SET(errno, EPERM, EACCES));
 235                 return;
 236         }
 237
 238         assert_se(unlink(path) >= 0);
 239
 240         assert_se(prctl(PR_SET_NAME, "testa") >= 0);
 241
 242         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 243
 244         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 245         assert_se(streq(line, "[testa]"));
 246         line = mfree(line);
 247
 248         assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0);
 249         assert_se(streq(line, ""));
 250         line = mfree(line);
 251
 252         assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0);
 253         assert_se(streq(line, "["));
 254         line = mfree(line);
 255
 256         assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0);
 257         assert_se(streq(line, "[."));
 258         line = mfree(line);
 259
 260         assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0);
 261         assert_se(streq(line, "[.."));
 262         line = mfree(line);
 263
 264         assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0);
 265         assert_se(streq(line, "[..."));
 266         line = mfree(line);
 267
 268         assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0);
 269         assert_se(streq(line, "[...]"));
 270         line = mfree(line);
 271
 272         assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0);
 273         assert_se(streq(line, "[t...]"));
 274         line = mfree(line);
 275
 276         assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0);
 277         assert_se(streq(line, "[testa]"));
 278         line = mfree(line);
 279
 280         assert_se(write(fd, "\0\0\0\0\0\0\0\0\0", 10) == 10);
 281
 282         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 283
 284         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 285         assert_se(streq(line, "[testa]"));
 286         line = mfree(line);
 287
 288         assert_se(write(fd, "foo\0bar\0\0\0\0\0", 10) == 10);
 289
 290         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0);
 291         assert_se(streq(line, "foo bar"));
 292         line = mfree(line);
 293
 294         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 295         assert_se(streq(line, "foo bar"));
 296         line = mfree(line);
 297
 298         assert_se(write(fd, "quux", 4) == 4);
 299         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) >= 0);
 300         assert_se(streq(line, "foo bar quux"));
 301         line = mfree(line);
 302
 303         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 304         assert_se(streq(line, "foo bar quux"));
 305         line = mfree(line);
 306
 307         assert_se(get_process_cmdline(getpid_cached(), 1, true, &line) >= 0);
 308         assert_se(streq(line, ""));
 309         line = mfree(line);
 310
 311         assert_se(get_process_cmdline(getpid_cached(), 2, true, &line) >= 0);
 312         assert_se(streq(line, "."));
 313         line = mfree(line);
 314
 315         assert_se(get_process_cmdline(getpid_cached(), 3, true, &line) >= 0);
 316         assert_se(streq(line, ".."));
 317         line = mfree(line);
 318
 319         assert_se(get_process_cmdline(getpid_cached(), 4, true, &line) >= 0);
 320         assert_se(streq(line, "..."));
 321         line = mfree(line);
 322
 323         assert_se(get_process_cmdline(getpid_cached(), 5, true, &line) >= 0);
 324         assert_se(streq(line, "f..."));
 325         line = mfree(line);
 326
 327         assert_se(get_process_cmdline(getpid_cached(), 6, true, &line) >= 0);
 328         assert_se(streq(line, "fo..."));
 329         line = mfree(line);
 330
 331         assert_se(get_process_cmdline(getpid_cached(), 7, true, &line) >= 0);
 332         assert_se(streq(line, "foo..."));
 333         line = mfree(line);
 334
 335         assert_se(get_process_cmdline(getpid_cached(), 8, true, &line) >= 0);
 336         assert_se(streq(line, "foo..."));
 337         line = mfree(line);
 338
 339         assert_se(get_process_cmdline(getpid_cached(), 9, true, &line) >= 0);
 340         assert_se(streq(line, "foo b..."));
 341         line = mfree(line);
 342
 343         assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0);
 344         assert_se(streq(line, "foo ba..."));
 345         line = mfree(line);
 346
 347         assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0);
 348         assert_se(streq(line, "foo bar..."));
 349         line = mfree(line);
 350
 351         assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0);
 352         assert_se(streq(line, "foo bar..."));
 353         line = mfree(line);
 354
 355         assert_se(get_process_cmdline(getpid_cached(), 13, true, &line) >= 0);
 356         assert_se(streq(line, "foo bar quux"));
 357         line = mfree(line);
 358
 359         assert_se(get_process_cmdline(getpid_cached(), 14, true, &line) >= 0);
 360         assert_se(streq(line, "foo bar quux"));
 361         line = mfree(line);
 362
 363         assert_se(get_process_cmdline(getpid_cached(), 1000, true, &line) >= 0);
 364         assert_se(streq(line, "foo bar quux"));
 365         line = mfree(line);
 366
 367         assert_se(ftruncate(fd, 0) >= 0);
 368         assert_se(prctl(PR_SET_NAME, "aaaa bbbb cccc") >= 0);
 369
 370         assert_se(get_process_cmdline(getpid_cached(), 0, false, &line) == -ENOENT);
 371
 372         assert_se(get_process_cmdline(getpid_cached(), 0, true, &line) >= 0);
 373         assert_se(streq(line, "[aaaa bbbb cccc]"));
 374         line = mfree(line);
 375
 376         assert_se(get_process_cmdline(getpid_cached(), 10, true, &line) >= 0);
 377         assert_se(streq(line, "[aaaa...]"));
 378         line = mfree(line);
 379
 380         assert_se(get_process_cmdline(getpid_cached(), 11, true, &line) >= 0);
 381         assert_se(streq(line, "[aaaa...]"));
 382         line = mfree(line);
 383
 384         assert_se(get_process_cmdline(getpid_cached(), 12, true, &line) >= 0);
 385         assert_se(streq(line, "[aaaa b...]"));
 386         line = mfree(line);
 387
 388         safe_close(fd);
 389         _exit(EXIT_SUCCESS);
 390 }
 391
 392 static void test_rename_process_now(const char *p, int ret) {
 393         _cleanup_free_ char *comm = NULL, *cmdline = NULL;
 394         int r;
 395
 396         r = rename_process(p);
 397         assert_se(r == ret ||
 398                   (ret == 0 && r >= 0) ||
 399                   (ret > 0 && r > 0));
 400
 401         if (r < 0)
 402                 return;
 403
 404 #if HAVE_VALGRIND_VALGRIND_H
 405         /* see above, valgrind is weird, we can't verify what we are doing here */
 406         if (RUNNING_ON_VALGRIND)
 407                 return;
 408 #endif
 409
 410         assert_se(get_process_comm(0, &comm) >= 0);
 411         log_info("comm = <%s>", comm);
 412         assert_se(strneq(comm, p, TASK_COMM_LEN-1));
 413
 414         r = get_process_cmdline(0, 0, false, &cmdline);
 415         assert_se(r >= 0);
 416         /* we cannot expect cmdline to be renamed properly without privileges */
 417         if (geteuid() == 0) {
 418                 if (r == 0 && detect_container() > 0)
 419                         log_info("cmdline = <%s> (not verified, Running in unprivileged container?)", cmdline);
 420                 else {
 421                         log_info("cmdline = <%s>", cmdline);
 422                         assert_se(strneq(p, cmdline, STRLEN("test-process-util")));
 423                         assert_se(startswith(p, cmdline));
 424                 }
 425         } else
 426                 log_info("cmdline = <%s> (not verified)", cmdline);
 427 }
 428
 429 static void test_rename_process_one(const char *p, int ret) {
 430         siginfo_t si;
 431         pid_t pid;
 432
 433         pid = fork();
 434         assert_se(pid >= 0);
 435
 436         if (pid == 0) {
 437                 /* child */
 438                 test_rename_process_now(p, ret);
 439                 _exit(EXIT_SUCCESS);
 440         }
 441
 442         assert_se(wait_for_terminate(pid, &si) >= 0);
 443         assert_se(si.si_code == CLD_EXITED);
 444         assert_se(si.si_status == EXIT_SUCCESS);
 445 }
 446
 447 static void test_rename_process_multi(void) {
 448         pid_t pid;
 449
 450         pid = fork();
 451         assert_se(pid >= 0);
 452
 453         if (pid > 0) {
 454                 siginfo_t si;
 455
 456                 assert_se(wait_for_terminate(pid, &si) >= 0);
 457                 assert_se(si.si_code == CLD_EXITED);
 458                 assert_se(si.si_status == EXIT_SUCCESS);
 459
 460                 return;
 461         }
 462
 463         /* child */
 464         test_rename_process_now("one", 1);
 465         test_rename_process_now("more", 0); /* longer than "one", hence truncated */
 466         (void) setresuid(99, 99, 99); /* change uid when running privileged */
 467         test_rename_process_now("time!", 0);
 468         test_rename_process_now("0", 1); /* shorter than "one", should fit */
 469         test_rename_process_one("", -EINVAL);
 470         test_rename_process_one(NULL, -EINVAL);
 471         _exit(EXIT_SUCCESS);
 472 }
 473
 474 static void test_rename_process(void) {
 475         test_rename_process_one(NULL, -EINVAL);
 476         test_rename_process_one("", -EINVAL);
 477         test_rename_process_one("foo", 1); /* should always fit */
 478         test_rename_process_one("this is a really really long process name, followed by some more words", 0); /* unlikely to fit */
 479         test_rename_process_one("1234567", 1); /* should always fit */
 480         test_rename_process_multi(); /* multiple invocations and dropped privileges */
 481 }
 482
 483 static void test_getpid_cached(void) {
 484         siginfo_t si;
 485         pid_t a, b, c, d, e, f, child;
 486
 487         a = raw_getpid();
 488         b = getpid_cached();
 489         c = getpid();
 490
 491         assert_se(a == b && a == c);
 492
 493         child = fork();
 494         assert_se(child >= 0);
 495
 496         if (child == 0) {
 497                 /* In child */
 498                 a = raw_getpid();
 499                 b = getpid_cached();
 500                 c = getpid();
 501
 502                 assert_se(a == b && a == c);
 503                 _exit(EXIT_SUCCESS);
 504         }
 505
 506         d = raw_getpid();
 507         e = getpid_cached();
 508         f = getpid();
 509
 510         assert_se(a == d && a == e && a == f);
 511
 512         assert_se(wait_for_terminate(child, &si) >= 0);
 513         assert_se(si.si_status == 0);
 514         assert_se(si.si_code == CLD_EXITED);
 515 }
 516
 517 #define MEASURE_ITERATIONS (10000000LLU)
 518
 519 static void test_getpid_measure(void) {
 520         unsigned long long i;
 521         usec_t t, q;
 522
 523         t = now(CLOCK_MONOTONIC);
 524         for (i = 0; i < MEASURE_ITERATIONS; i++)
 525                 (void) getpid();
 526         q = now(CLOCK_MONOTONIC) - t;
 527
 528         log_info(" glibc getpid(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q));
 529
 530         t = now(CLOCK_MONOTONIC);
 531         for (i = 0; i < MEASURE_ITERATIONS; i++)
 532                 (void) getpid_cached();
 533         q = now(CLOCK_MONOTONIC) - t;
 534
 535         log_info("getpid_cached(): %llu/s\n", (unsigned long long) (MEASURE_ITERATIONS*USEC_PER_SEC/q));
 536 }
 537
 538 static void test_safe_fork(void) {
 539         siginfo_t status;
 540         pid_t pid;
 541         int r;
 542
 543         BLOCK_SIGNALS(SIGCHLD);
 544
 545         r = safe_fork("(test-child)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_NULL_STDIO|FORK_REOPEN_LOG, &pid);
 546         assert_se(r >= 0);
 547
 548         if (r == 0) {
 549                 /* child */
 550                 usleep(100 * USEC_PER_MSEC);
 551
 552                 _exit(88);
 553         }
 554
 555         assert_se(wait_for_terminate(pid, &status) >= 0);
 556         assert_se(status.si_code == CLD_EXITED);
 557         assert_se(status.si_status == 88);
 558 }
 559
 560 static void test_pid_to_ptr(void) {
 561
 562         assert_se(PTR_TO_PID(NULL) == 0);
 563         assert_se(PID_TO_PTR(0) == NULL);
 564
 565         assert_se(PTR_TO_PID(PID_TO_PTR(1)) == 1);
 566         assert_se(PTR_TO_PID(PID_TO_PTR(2)) == 2);
 567         assert_se(PTR_TO_PID(PID_TO_PTR(-1)) == -1);
 568         assert_se(PTR_TO_PID(PID_TO_PTR(-2)) == -2);
 569
 570         assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MAX)) == INT16_MAX);
 571         assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MIN)) == INT16_MIN);
 572
 573 #if SIZEOF_PID_T >= 4
 574         assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MAX)) == INT32_MAX);
 575         assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MIN)) == INT32_MIN);
 576 #endif
 577 }
 578
 579 static void test_ioprio_class_from_to_string_one(const char *val, int expected) {
 580         assert_se(ioprio_class_from_string(val) == expected);
 581         if (expected >= 0) {
 582                 _cleanup_free_ char *s = NULL;
 583                 unsigned ret;
 584
 585                 assert_se(ioprio_class_to_string_alloc(expected, &s) == 0);
 586                 /* We sometimes get a class number and sometimes a number back */
 587                 assert_se(streq(s, val) ||
 588                           safe_atou(val, &ret) == 0);
 589         }
 590 }
 591
 592 static void test_ioprio_class_from_to_string(void) {
 593         test_ioprio_class_from_to_string_one("none", IOPRIO_CLASS_NONE);
 594         test_ioprio_class_from_to_string_one("realtime", IOPRIO_CLASS_RT);
 595         test_ioprio_class_from_to_string_one("best-effort", IOPRIO_CLASS_BE);
 596         test_ioprio_class_from_to_string_one("idle", IOPRIO_CLASS_IDLE);
 597         test_ioprio_class_from_to_string_one("0", 0);
 598         test_ioprio_class_from_to_string_one("1", 1);
 599         test_ioprio_class_from_to_string_one("7", 7);
 600         test_ioprio_class_from_to_string_one("8", 8);
 601         test_ioprio_class_from_to_string_one("9", -1);
 602         test_ioprio_class_from_to_string_one("-1", -1);
 603 }
 604
 605 int main(int argc, char *argv[]) {
 606         test_setup_logging(LOG_DEBUG);
 607
 608         saved_argc = argc;
 609         saved_argv = argv;
 610
 611         if (argc > 1) {
 612                 pid_t pid = 0;
 613
 614                 (void) parse_pid(argv[1], &pid);
 615                 test_get_process_comm(pid);
 616         } else {
 617                 TEST_REQ_RUNNING_SYSTEMD(test_get_process_comm(1));
 618                 test_get_process_comm(getpid());
 619         }
 620
 621         test_get_process_comm_escape();
 622         test_pid_is_unwaited();
 623         test_pid_is_alive();
 624         test_personality();
 625         test_get_process_cmdline_harder();
 626         test_rename_process();
 627         test_getpid_cached();
 628         test_getpid_measure();
 629         test_safe_fork();
 630         test_pid_to_ptr();
 631         test_ioprio_class_from_to_string();
 632
 633         return 0;
 634 }