src/test/test-execute.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2014 Ronny Chevalier
   6 ***/
   7
   8 #include <grp.h>
   9 #include <pwd.h>
  10 #include <stdio.h>
  11 #include <sys/prctl.h>
  12 #include <sys/types.h>
  13
  14 #include "capability-util.h"
  15 #include "cpu-set-util.h"
  16 #include "errno-list.h"
  17 #include "fileio.h"
  18 #include "fs-util.h"
  19 #include "macro.h"
  20 #include "manager.h"
  21 #include "mkdir.h"
  22 #include "path-util.h"
  23 #include "rm-rf.h"
  24 #if HAVE_SECCOMP
  25 #include "seccomp-util.h"
  26 #endif
  27 #include "stat-util.h"
  28 #include "test-helper.h"
  29 #include "tests.h"
  30 #include "unit.h"
  31 #include "user-util.h"
  32 #include "util.h"
  33 #include "virt.h"
  34
  35 typedef void (*test_function_t)(Manager *m);
  36
  37 static void check(Manager *m, Unit *unit, int status_expected, int code_expected) {
  38         Service *service = NULL;
  39         usec_t ts;
  40         usec_t timeout = 2 * USEC_PER_MINUTE;
  41
  42         assert_se(m);
  43         assert_se(unit);
  44
  45         service = SERVICE(unit);
  46         printf("%s\n", unit->id);
  47         exec_context_dump(&service->exec_context, stdout, "\t");
  48         ts = now(CLOCK_MONOTONIC);
  49         while (!IN_SET(service->state, SERVICE_DEAD, SERVICE_FAILED)) {
  50                 int r;
  51                 usec_t n;
  52
  53                 r = sd_event_run(m->event, 100 * USEC_PER_MSEC);
  54                 assert_se(r >= 0);
  55
  56                 n = now(CLOCK_MONOTONIC);
  57                 if (ts + timeout < n) {
  58                         log_error("Test timeout when testing %s", unit->id);
  59                         exit(EXIT_FAILURE);
  60                 }
  61         }
  62         exec_status_dump(&service->main_exec_status, stdout, "\t");
  63         assert_se(service->main_exec_status.status == status_expected);
  64         assert_se(service->main_exec_status.code == code_expected);
  65 }
  66
  67 static bool check_nobody_user_and_group(void) {
  68         static int cache = -1;
  69         struct passwd *p;
  70         struct group *g;
  71
  72         if (cache >= 0)
  73                 return !!cache;
  74
  75         if (!synthesize_nobody())
  76                 goto invalid;
  77
  78         p = getpwnam(NOBODY_USER_NAME);
  79         if (!p ||
  80             !streq(p->pw_name, NOBODY_USER_NAME) ||
  81             p->pw_uid != UID_NOBODY ||
  82             p->pw_gid != GID_NOBODY)
  83                 goto invalid;
  84
  85         p = getpwuid(UID_NOBODY);
  86         if (!p ||
  87             !streq(p->pw_name, NOBODY_USER_NAME) ||
  88             p->pw_uid != UID_NOBODY ||
  89             p->pw_gid != GID_NOBODY)
  90                 goto invalid;
  91
  92         g = getgrnam(NOBODY_GROUP_NAME);
  93         if (!g ||
  94             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
  95             g->gr_gid != GID_NOBODY)
  96                 goto invalid;
  97
  98         g = getgrgid(GID_NOBODY);
  99         if (!g ||
 100             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
 101             g->gr_gid != GID_NOBODY)
 102                 goto invalid;
 103
 104         cache = 1;
 105         return true;
 106
 107 invalid:
 108         cache = 0;
 109         return false;
 110 }
 111
 112 static bool is_inaccessible_available(void) {
 113         char *p;
 114
 115         FOREACH_STRING(p,
 116                 "/run/systemd/inaccessible/reg",
 117                 "/run/systemd/inaccessible/dir",
 118                 "/run/systemd/inaccessible/chr",
 119                 "/run/systemd/inaccessible/blk",
 120                 "/run/systemd/inaccessible/fifo",
 121                 "/run/systemd/inaccessible/sock"
 122         ) {
 123                 if (access(p, F_OK) < 0)
 124                         return false;
 125         }
 126
 127         return true;
 128 }
 129
 130 static void test(Manager *m, const char *unit_name, int status_expected, int code_expected) {
 131         Unit *unit;
 132
 133         assert_se(unit_name);
 134
 135         assert_se(manager_load_startable_unit_or_warn(m, unit_name, NULL, &unit) >= 0);
 136         assert_se(UNIT_VTABLE(unit)->start(unit) >= 0);
 137         check(m, unit, status_expected, code_expected);
 138 }
 139
 140 static void test_exec_bindpaths(Manager *m) {
 141         assert_se(mkdir_p("/tmp/test-exec-bindpaths", 0755) >= 0);
 142         assert_se(mkdir_p("/tmp/test-exec-bindreadonlypaths", 0755) >= 0);
 143
 144         test(m, "exec-bindpaths.service", 0, CLD_EXITED);
 145
 146         (void) rm_rf("/tmp/test-exec-bindpaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 147         (void) rm_rf("/tmp/test-exec-bindreadonlypaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 148 }
 149
 150 static void test_exec_cpuaffinity(Manager *m) {
 151         _cleanup_cpu_free_ cpu_set_t *c = NULL;
 152         unsigned n;
 153
 154         assert_se(c = cpu_set_malloc(&n));
 155         assert_se(sched_getaffinity(0, CPU_ALLOC_SIZE(n), c) >= 0);
 156
 157         if (CPU_ISSET_S(0, CPU_ALLOC_SIZE(n), c) == 0) {
 158                 log_notice("Cannot use CPU 0, skipping %s", __func__);
 159                 return;
 160         }
 161
 162         test(m, "exec-cpuaffinity1.service", 0, CLD_EXITED);
 163         test(m, "exec-cpuaffinity2.service", 0, CLD_EXITED);
 164
 165         if (CPU_ISSET_S(1, CPU_ALLOC_SIZE(n), c) == 0 ||
 166             CPU_ISSET_S(2, CPU_ALLOC_SIZE(n), c) == 0) {
 167                 log_notice("Cannot use CPU 1 or 2, skipping remaining tests in %s", __func__);
 168                 return;
 169         }
 170
 171         test(m, "exec-cpuaffinity3.service", 0, CLD_EXITED);
 172 }
 173
 174 static void test_exec_workingdirectory(Manager *m) {
 175         assert_se(mkdir_p("/tmp/test-exec_workingdirectory", 0755) >= 0);
 176
 177         test(m, "exec-workingdirectory.service", 0, CLD_EXITED);
 178
 179         (void) rm_rf("/tmp/test-exec_workingdirectory", REMOVE_ROOT|REMOVE_PHYSICAL);
 180 }
 181
 182 static void test_exec_personality(Manager *m) {
 183 #if defined(__x86_64__)
 184         test(m, "exec-personality-x86-64.service", 0, CLD_EXITED);
 185
 186 #elif defined(__s390__)
 187         test(m, "exec-personality-s390.service", 0, CLD_EXITED);
 188
 189 #elif defined(__powerpc64__)
 190 #  if __BYTE_ORDER == __BIG_ENDIAN
 191         test(m, "exec-personality-ppc64.service", 0, CLD_EXITED);
 192 #  else
 193         test(m, "exec-personality-ppc64le.service", 0, CLD_EXITED);
 194 #  endif
 195
 196 #elif defined(__aarch64__)
 197         test(m, "exec-personality-aarch64.service", 0, CLD_EXITED);
 198
 199 #elif defined(__i386__)
 200         test(m, "exec-personality-x86.service", 0, CLD_EXITED);
 201 #else
 202         log_notice("Unknown personality, skipping %s", __func__);
 203 #endif
 204 }
 205
 206 static void test_exec_ignoresigpipe(Manager *m) {
 207         test(m, "exec-ignoresigpipe-yes.service", 0, CLD_EXITED);
 208         test(m, "exec-ignoresigpipe-no.service", SIGPIPE, CLD_KILLED);
 209 }
 210
 211 static void test_exec_privatetmp(Manager *m) {
 212         assert_se(touch("/tmp/test-exec_privatetmp") >= 0);
 213
 214         test(m, "exec-privatetmp-yes.service", 0, CLD_EXITED);
 215         test(m, "exec-privatetmp-no.service", 0, CLD_EXITED);
 216
 217         unlink("/tmp/test-exec_privatetmp");
 218 }
 219
 220 static void test_exec_privatedevices(Manager *m) {
 221         int r;
 222
 223         if (detect_container() > 0) {
 224                 log_notice("Testing in container, skipping %s", __func__);
 225                 return;
 226         }
 227         if (!is_inaccessible_available()) {
 228                 log_notice("Testing without inaccessible, skipping %s", __func__);
 229                 return;
 230         }
 231
 232         test(m, "exec-privatedevices-yes.service", 0, CLD_EXITED);
 233         test(m, "exec-privatedevices-no.service", 0, CLD_EXITED);
 234         test(m, "exec-privatedevices-disabled-by-prefix.service", 0, CLD_EXITED);
 235
 236         /* We use capsh to test if the capabilities are
 237          * properly set, so be sure that it exists */
 238         r = find_binary("capsh", NULL);
 239         if (r < 0) {
 240                 log_notice_errno(r, "Could not find capsh binary, skipping remaining tests in %s: %m", __func__);
 241                 return;
 242         }
 243
 244         test(m, "exec-privatedevices-yes-capability-mknod.service", 0, CLD_EXITED);
 245         test(m, "exec-privatedevices-no-capability-mknod.service", 0, CLD_EXITED);
 246         test(m, "exec-privatedevices-yes-capability-sys-rawio.service", 0, CLD_EXITED);
 247         test(m, "exec-privatedevices-no-capability-sys-rawio.service", 0, CLD_EXITED);
 248 }
 249
 250 static void test_exec_protectkernelmodules(Manager *m) {
 251         int r;
 252
 253         if (detect_container() > 0) {
 254                 log_notice("Testing in container, skipping %s", __func__);
 255                 return;
 256         }
 257         if (!is_inaccessible_available()) {
 258                 log_notice("Testing without inaccessible, skipping %s", __func__);
 259                 return;
 260         }
 261
 262         r = find_binary("capsh", NULL);
 263         if (r < 0) {
 264                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 265                 return;
 266         }
 267
 268         test(m, "exec-protectkernelmodules-no-capabilities.service", 0, CLD_EXITED);
 269         test(m, "exec-protectkernelmodules-yes-capabilities.service", 0, CLD_EXITED);
 270         test(m, "exec-protectkernelmodules-yes-mount-propagation.service", 0, CLD_EXITED);
 271 }
 272
 273 static void test_exec_readonlypaths(Manager *m) {
 274
 275         test(m, "exec-readonlypaths-simple.service", 0, CLD_EXITED);
 276
 277         if (path_is_read_only_fs("/var") > 0) {
 278                 log_notice("Directory /var is readonly, skipping remaining tests in %s", __func__);
 279                 return;
 280         }
 281
 282         test(m, "exec-readonlypaths.service", 0, CLD_EXITED);
 283         test(m, "exec-readonlypaths-mount-propagation.service", 0, CLD_EXITED);
 284         test(m, "exec-readonlypaths-with-bindpaths.service", 0, CLD_EXITED);
 285 }
 286
 287 static void test_exec_readwritepaths(Manager *m) {
 288
 289         if (path_is_read_only_fs("/") > 0) {
 290                 log_notice("Root directory is readonly, skipping %s", __func__);
 291                 return;
 292         }
 293
 294         test(m, "exec-readwritepaths-mount-propagation.service", 0, CLD_EXITED);
 295 }
 296
 297 static void test_exec_inaccessiblepaths(Manager *m) {
 298
 299         if (!is_inaccessible_available()) {
 300                 log_notice("Testing without inaccessible, skipping %s", __func__);
 301                 return;
 302         }
 303
 304         test(m, "exec-inaccessiblepaths-proc.service", 0, CLD_EXITED);
 305
 306         if (path_is_read_only_fs("/") > 0) {
 307                 log_notice("Root directory is readonly, skipping remaining tests in %s", __func__);
 308                 return;
 309         }
 310
 311         test(m, "exec-inaccessiblepaths-mount-propagation.service", 0, CLD_EXITED);
 312 }
 313
 314 static void test_exec_temporaryfilesystem(Manager *m) {
 315
 316         test(m, "exec-temporaryfilesystem-options.service", 0, CLD_EXITED);
 317         test(m, "exec-temporaryfilesystem-ro.service", 0, CLD_EXITED);
 318         test(m, "exec-temporaryfilesystem-rw.service", 0, CLD_EXITED);
 319         test(m, "exec-temporaryfilesystem-usr.service", 0, CLD_EXITED);
 320 }
 321
 322 static void test_exec_systemcallfilter(Manager *m) {
 323 #if HAVE_SECCOMP
 324         if (!is_seccomp_available()) {
 325                 log_notice("Seccomp not available, skipping %s", __func__);
 326                 return;
 327         }
 328
 329         test(m, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED);
 330         test(m, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED);
 331         test(m, "exec-systemcallfilter-failing.service", SIGSYS, CLD_KILLED);
 332         test(m, "exec-systemcallfilter-failing2.service", SIGSYS, CLD_KILLED);
 333         test(m, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED);
 334         test(m, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED);
 335 #endif
 336 }
 337
 338 static void test_exec_systemcallerrornumber(Manager *m) {
 339 #if HAVE_SECCOMP
 340         if (!is_seccomp_available()) {
 341                 log_notice("Seccomp not available, skipping %s", __func__);
 342                 return;
 343         }
 344
 345         test(m, "exec-systemcallerrornumber-name.service", errno_from_name("EACCES"), CLD_EXITED);
 346         test(m, "exec-systemcallerrornumber-number.service", 255, CLD_EXITED);
 347 #endif
 348 }
 349
 350 static void test_exec_restrictnamespaces(Manager *m) {
 351 #if HAVE_SECCOMP
 352         if (!is_seccomp_available()) {
 353                 log_notice("Seccomp not available, skipping %s", __func__);
 354                 return;
 355         }
 356
 357         test(m, "exec-restrictnamespaces-no.service", 0, CLD_EXITED);
 358         test(m, "exec-restrictnamespaces-yes.service", 1, CLD_EXITED);
 359         test(m, "exec-restrictnamespaces-mnt.service", 0, CLD_EXITED);
 360         test(m, "exec-restrictnamespaces-mnt-blacklist.service", 1, CLD_EXITED);
 361         test(m, "exec-restrictnamespaces-merge-and.service", 0, CLD_EXITED);
 362         test(m, "exec-restrictnamespaces-merge-or.service", 0, CLD_EXITED);
 363         test(m, "exec-restrictnamespaces-merge-all.service", 0, CLD_EXITED);
 364 #endif
 365 }
 366
 367 static void test_exec_systemcallfilter_system(Manager *m) {
 368 #if HAVE_SECCOMP
 369         if (!is_seccomp_available()) {
 370                 log_notice("Seccomp not available, skipping %s", __func__);
 371                 return;
 372         }
 373
 374         test(m, "exec-systemcallfilter-system-user.service", 0, CLD_EXITED);
 375
 376         if (!check_nobody_user_and_group()) {
 377                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 378                 return;
 379         }
 380
 381         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 382                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 383                 return;
 384         }
 385
 386         test(m, "exec-systemcallfilter-system-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 387 #endif
 388 }
 389
 390 static void test_exec_user(Manager *m) {
 391         test(m, "exec-user.service", 0, CLD_EXITED);
 392
 393         if (!check_nobody_user_and_group()) {
 394                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 395                 return;
 396         }
 397
 398         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 399                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 400                 return;
 401         }
 402
 403         test(m, "exec-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 404 }
 405
 406 static void test_exec_group(Manager *m) {
 407         test(m, "exec-group.service", 0, CLD_EXITED);
 408
 409         if (!check_nobody_user_and_group()) {
 410                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 411                 return;
 412         }
 413
 414         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 415                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 416                 return;
 417         }
 418
 419         test(m, "exec-group-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 420 }
 421
 422 static void test_exec_supplementarygroups(Manager *m) {
 423         test(m, "exec-supplementarygroups.service", 0, CLD_EXITED);
 424         test(m, "exec-supplementarygroups-single-group.service", 0, CLD_EXITED);
 425         test(m, "exec-supplementarygroups-single-group-user.service", 0, CLD_EXITED);
 426         test(m, "exec-supplementarygroups-multiple-groups-default-group-user.service", 0, CLD_EXITED);
 427         test(m, "exec-supplementarygroups-multiple-groups-withgid.service", 0, CLD_EXITED);
 428         test(m, "exec-supplementarygroups-multiple-groups-withuid.service", 0, CLD_EXITED);
 429 }
 430
 431 static void test_exec_dynamicuser(Manager *m) {
 432         test(m, "exec-dynamicuser-fixeduser.service", 0, CLD_EXITED);
 433         test(m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", 0, CLD_EXITED);
 434         test(m, "exec-dynamicuser-supplementarygroups.service", 0, CLD_EXITED);
 435         test(m, "exec-dynamicuser-statedir.service", 0, CLD_EXITED);
 436
 437         test(m, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED);
 438         test(m, "exec-dynamicuser-statedir-migrate-step2.service", 0, CLD_EXITED);
 439         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 440         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 441         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 442         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 443 }
 444
 445 static void test_exec_environment(Manager *m) {
 446         test(m, "exec-environment.service", 0, CLD_EXITED);
 447         test(m, "exec-environment-multiple.service", 0, CLD_EXITED);
 448         test(m, "exec-environment-empty.service", 0, CLD_EXITED);
 449 }
 450
 451 static void test_exec_environmentfile(Manager *m) {
 452         static const char e[] =
 453                 "VAR1='word1 word2'\n"
 454                 "VAR2=word3 \n"
 455                 "# comment1\n"
 456                 "\n"
 457                 "; comment2\n"
 458                 " ; # comment3\n"
 459                 "line without an equal\n"
 460                 "VAR3='$word 5 6'\n"
 461                 "VAR4='new\nline'\n";
 462         int r;
 463
 464         r = write_string_file("/tmp/test-exec_environmentfile.conf", e, WRITE_STRING_FILE_CREATE);
 465         assert_se(r == 0);
 466
 467         test(m, "exec-environmentfile.service", 0, CLD_EXITED);
 468
 469         (void) unlink("/tmp/test-exec_environmentfile.conf");
 470 }
 471
 472 static void test_exec_passenvironment(Manager *m) {
 473         /* test-execute runs under MANAGER_USER which, by default, forwards all
 474          * variables present in the environment, but only those that are
 475          * present _at the time it is created_!
 476          *
 477          * So these PassEnvironment checks are still expected to work, since we
 478          * are ensuring the variables are not present at manager creation (they
 479          * are unset explicitly in main) and are only set here.
 480          *
 481          * This is still a good approximation of how a test for MANAGER_SYSTEM
 482          * would work.
 483          */
 484         assert_se(setenv("VAR1", "word1 word2", 1) == 0);
 485         assert_se(setenv("VAR2", "word3", 1) == 0);
 486         assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
 487         assert_se(setenv("VAR4", "new\nline", 1) == 0);
 488         test(m, "exec-passenvironment.service", 0, CLD_EXITED);
 489         test(m, "exec-passenvironment-repeated.service", 0, CLD_EXITED);
 490         test(m, "exec-passenvironment-empty.service", 0, CLD_EXITED);
 491         assert_se(unsetenv("VAR1") == 0);
 492         assert_se(unsetenv("VAR2") == 0);
 493         assert_se(unsetenv("VAR3") == 0);
 494         assert_se(unsetenv("VAR4") == 0);
 495         test(m, "exec-passenvironment-absent.service", 0, CLD_EXITED);
 496 }
 497
 498 static void test_exec_umask(Manager *m) {
 499         test(m, "exec-umask-default.service", 0, CLD_EXITED);
 500         test(m, "exec-umask-0177.service", 0, CLD_EXITED);
 501 }
 502
 503 static void test_exec_runtimedirectory(Manager *m) {
 504         test(m, "exec-runtimedirectory.service", 0, CLD_EXITED);
 505         test(m, "exec-runtimedirectory-mode.service", 0, CLD_EXITED);
 506         test(m, "exec-runtimedirectory-owner.service", 0, CLD_EXITED);
 507
 508         if (!check_nobody_user_and_group()) {
 509                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 510                 return;
 511         }
 512
 513         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 514                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 515                 return;
 516         }
 517
 518         test(m, "exec-runtimedirectory-owner-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 519 }
 520
 521 static void test_exec_capabilityboundingset(Manager *m) {
 522         int r;
 523
 524         r = find_binary("capsh", NULL);
 525         if (r < 0) {
 526                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 527                 return;
 528         }
 529
 530         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 531             have_effective_cap(CAP_FOWNER) <= 0 ||
 532             have_effective_cap(CAP_KILL) <= 0) {
 533                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 534                 return;
 535         }
 536
 537         test(m, "exec-capabilityboundingset-simple.service", 0, CLD_EXITED);
 538         test(m, "exec-capabilityboundingset-reset.service", 0, CLD_EXITED);
 539         test(m, "exec-capabilityboundingset-merge.service", 0, CLD_EXITED);
 540         test(m, "exec-capabilityboundingset-invert.service", 0, CLD_EXITED);
 541 }
 542
 543 static void test_exec_basic(Manager *m) {
 544         test(m, "exec-basic.service", 0, CLD_EXITED);
 545 }
 546
 547 static void test_exec_ambientcapabilities(Manager *m) {
 548         int r;
 549
 550         /* Check if the kernel has support for ambient capabilities. Run
 551          * the tests only if that's the case. Clearing all ambient
 552          * capabilities is fine, since we are expecting them to be unset
 553          * in the first place for the tests. */
 554         r = prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0);
 555         if (r < 0 && IN_SET(errno, EINVAL, EOPNOTSUPP, ENOSYS)) {
 556                 log_notice("Skipping %s, the kernel does not support ambient capabilities", __func__);
 557                 return;
 558         }
 559
 560         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 561             have_effective_cap(CAP_NET_RAW) <= 0) {
 562                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 563                 return;
 564         }
 565
 566         test(m, "exec-ambientcapabilities.service", 0, CLD_EXITED);
 567         test(m, "exec-ambientcapabilities-merge.service", 0, CLD_EXITED);
 568
 569         if (!check_nobody_user_and_group()) {
 570                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 571                 return;
 572         }
 573
 574         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 575                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 576                 return;
 577         }
 578
 579         test(m, "exec-ambientcapabilities-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 580         test(m, "exec-ambientcapabilities-merge-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 581 }
 582
 583 static void test_exec_privatenetwork(Manager *m) {
 584         int r;
 585
 586         r = find_binary("ip", NULL);
 587         if (r < 0) {
 588                 log_notice_errno(r, "Skipping %s, could not find ip binary: %m", __func__);
 589                 return;
 590         }
 591
 592         test(m, "exec-privatenetwork-yes.service", 0, CLD_EXITED);
 593 }
 594
 595 static void test_exec_oomscoreadjust(Manager *m) {
 596         test(m, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED);
 597         test(m, "exec-oomscoreadjust-negative.service", 0, CLD_EXITED);
 598 }
 599
 600 static void test_exec_ioschedulingclass(Manager *m) {
 601         test(m, "exec-ioschedulingclass-none.service", 0, CLD_EXITED);
 602         test(m, "exec-ioschedulingclass-idle.service", 0, CLD_EXITED);
 603         test(m, "exec-ioschedulingclass-realtime.service", 0, CLD_EXITED);
 604         test(m, "exec-ioschedulingclass-best-effort.service", 0, CLD_EXITED);
 605 }
 606
 607 static void test_exec_unsetenvironment(Manager *m) {
 608         test(m, "exec-unsetenvironment.service", 0, CLD_EXITED);
 609 }
 610
 611 static void test_exec_specifier(Manager *m) {
 612         test(m, "exec-specifier.service", 0, CLD_EXITED);
 613         test(m, "exec-specifier@foo-bar.service", 0, CLD_EXITED);
 614         test(m, "exec-specifier-interpolation.service", 0, CLD_EXITED);
 615 }
 616
 617 static void test_exec_standardinput(Manager *m) {
 618         test(m, "exec-standardinput-data.service", 0, CLD_EXITED);
 619         test(m, "exec-standardinput-file.service", 0, CLD_EXITED);
 620 }
 621
 622 static int run_tests(UnitFileScope scope, const test_function_t *tests) {
 623         const test_function_t *test = NULL;
 624         _cleanup_(manager_freep) Manager *m = NULL;
 625         int r;
 626
 627         assert_se(tests);
 628
 629         r = manager_new(scope, MANAGER_TEST_RUN_BASIC, &m);
 630         if (MANAGER_SKIP_TEST(r)) {
 631                 log_notice_errno(r, "Skipping test: manager_new: %m");
 632                 return EXIT_TEST_SKIP;
 633         }
 634         assert_se(r >= 0);
 635         assert_se(manager_startup(m, NULL, NULL) >= 0);
 636
 637         for (test = tests; test && *test; test++)
 638                 (*test)(m);
 639
 640         return 0;
 641 }
 642
 643 int main(int argc, char *argv[]) {
 644         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
 645         static const test_function_t user_tests[] = {
 646                 test_exec_basic,
 647                 test_exec_ambientcapabilities,
 648                 test_exec_bindpaths,
 649                 test_exec_capabilityboundingset,
 650                 test_exec_cpuaffinity,
 651                 test_exec_environment,
 652                 test_exec_environmentfile,
 653                 test_exec_group,
 654                 test_exec_ignoresigpipe,
 655                 test_exec_inaccessiblepaths,
 656                 test_exec_ioschedulingclass,
 657                 test_exec_oomscoreadjust,
 658                 test_exec_passenvironment,
 659                 test_exec_personality,
 660                 test_exec_privatedevices,
 661                 test_exec_privatenetwork,
 662                 test_exec_privatetmp,
 663                 test_exec_protectkernelmodules,
 664                 test_exec_readonlypaths,
 665                 test_exec_readwritepaths,
 666                 test_exec_restrictnamespaces,
 667                 test_exec_runtimedirectory,
 668                 test_exec_standardinput,
 669                 test_exec_supplementarygroups,
 670                 test_exec_systemcallerrornumber,
 671                 test_exec_systemcallfilter,
 672                 test_exec_temporaryfilesystem,
 673                 test_exec_umask,
 674                 test_exec_unsetenvironment,
 675                 test_exec_user,
 676                 test_exec_workingdirectory,
 677                 NULL,
 678         };
 679         static const test_function_t system_tests[] = {
 680                 test_exec_dynamicuser,
 681                 test_exec_specifier,
 682                 test_exec_systemcallfilter_system,
 683                 NULL,
 684         };
 685         int r;
 686
 687         log_set_max_level(LOG_DEBUG);
 688         log_parse_environment();
 689         log_open();
 690
 691         (void) unsetenv("USER");
 692         (void) unsetenv("LOGNAME");
 693         (void) unsetenv("SHELL");
 694
 695         /* It is needed otherwise cgroup creation fails */
 696         if (getuid() != 0) {
 697                 puts("Skipping test: not root");
 698                 return EXIT_TEST_SKIP;
 699         }
 700
 701         r = enter_cgroup_subroot();
 702         if (r == -ENOMEDIUM) {
 703                 puts("Skipping test: cgroupfs not available");
 704                 return EXIT_TEST_SKIP;
 705         }
 706
 707         assert_se(runtime_dir = setup_fake_runtime_dir());
 708         assert_se(set_unit_path(get_testdata_dir("/test-execute")) >= 0);
 709
 710         /* Unset VAR1, VAR2 and VAR3 which are used in the PassEnvironment test
 711          * cases, otherwise (and if they are present in the environment),
 712          * `manager_default_environment` will copy them into the default
 713          * environment which is passed to each created job, which will make the
 714          * tests that expect those not to be present to fail.
 715          */
 716         assert_se(unsetenv("VAR1") == 0);
 717         assert_se(unsetenv("VAR2") == 0);
 718         assert_se(unsetenv("VAR3") == 0);
 719
 720         r = run_tests(UNIT_FILE_USER, user_tests);
 721         if (r != 0)
 722                 return r;
 723
 724         return run_tests(UNIT_FILE_SYSTEM, system_tests);
 725 }