src/test/test-execute.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <grp.h>
   4 #include <pwd.h>
   5 #include <stdio.h>
   6 #include <sys/prctl.h>
   7 #include <sys/types.h>
   8
   9 #include "capability-util.h"
  10 #include "cpu-set-util.h"
  11 #include "errno-list.h"
  12 #include "fileio.h"
  13 #include "fs-util.h"
  14 #include "macro.h"
  15 #include "manager.h"
  16 #include "mkdir.h"
  17 #include "path-util.h"
  18 #include "rm-rf.h"
  19 #if HAVE_SECCOMP
  20 #include "seccomp-util.h"
  21 #endif
  22 #include "service.h"
  23 #include "stat-util.h"
  24 #include "test-helper.h"
  25 #include "tests.h"
  26 #include "unit.h"
  27 #include "user-util.h"
  28 #include "util.h"
  29 #include "virt.h"
  30
  31 static bool can_unshare;
  32
  33 typedef void (*test_function_t)(Manager *m);
  34
  35 static void check(Manager *m, Unit *unit, int status_expected, int code_expected) {
  36         Service *service = NULL;
  37         usec_t ts;
  38         usec_t timeout = 2 * USEC_PER_MINUTE;
  39
  40         assert_se(m);
  41         assert_se(unit);
  42
  43         service = SERVICE(unit);
  44         printf("%s\n", unit->id);
  45         exec_context_dump(&service->exec_context, stdout, "\t");
  46         ts = now(CLOCK_MONOTONIC);
  47         while (!IN_SET(service->state, SERVICE_DEAD, SERVICE_FAILED)) {
  48                 int r;
  49                 usec_t n;
  50
  51                 r = sd_event_run(m->event, 100 * USEC_PER_MSEC);
  52                 assert_se(r >= 0);
  53
  54                 n = now(CLOCK_MONOTONIC);
  55                 if (ts + timeout < n) {
  56                         log_error("Test timeout when testing %s", unit->id);
  57                         exit(EXIT_FAILURE);
  58                 }
  59         }
  60         exec_status_dump(&service->main_exec_status, stdout, "\t");
  61         assert_se(service->main_exec_status.status == status_expected);
  62         assert_se(service->main_exec_status.code == code_expected);
  63 }
  64
  65 static bool check_nobody_user_and_group(void) {
  66         static int cache = -1;
  67         struct passwd *p;
  68         struct group *g;
  69
  70         if (cache >= 0)
  71                 return !!cache;
  72
  73         if (!synthesize_nobody())
  74                 goto invalid;
  75
  76         p = getpwnam(NOBODY_USER_NAME);
  77         if (!p ||
  78             !streq(p->pw_name, NOBODY_USER_NAME) ||
  79             p->pw_uid != UID_NOBODY ||
  80             p->pw_gid != GID_NOBODY)
  81                 goto invalid;
  82
  83         p = getpwuid(UID_NOBODY);
  84         if (!p ||
  85             !streq(p->pw_name, NOBODY_USER_NAME) ||
  86             p->pw_uid != UID_NOBODY ||
  87             p->pw_gid != GID_NOBODY)
  88                 goto invalid;
  89
  90         g = getgrnam(NOBODY_GROUP_NAME);
  91         if (!g ||
  92             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
  93             g->gr_gid != GID_NOBODY)
  94                 goto invalid;
  95
  96         g = getgrgid(GID_NOBODY);
  97         if (!g ||
  98             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
  99             g->gr_gid != GID_NOBODY)
 100                 goto invalid;
 101
 102         cache = 1;
 103         return true;
 104
 105 invalid:
 106         cache = 0;
 107         return false;
 108 }
 109
 110 static bool check_user_has_group_with_same_name(const char *name) {
 111         struct passwd *p;
 112         struct group *g;
 113
 114         assert(name);
 115
 116         p = getpwnam(name);
 117         if (!p ||
 118             !streq(p->pw_name, name))
 119                 return false;
 120
 121         g = getgrgid(p->pw_gid);
 122         if (!g ||
 123             !streq(g->gr_name, name))
 124                 return false;
 125
 126         return true;
 127 }
 128
 129 static bool is_inaccessible_available(void) {
 130         char *p;
 131
 132         FOREACH_STRING(p,
 133                 "/run/systemd/inaccessible/reg",
 134                 "/run/systemd/inaccessible/dir",
 135                 "/run/systemd/inaccessible/chr",
 136                 "/run/systemd/inaccessible/blk",
 137                 "/run/systemd/inaccessible/fifo",
 138                 "/run/systemd/inaccessible/sock"
 139         ) {
 140                 if (access(p, F_OK) < 0)
 141                         return false;
 142         }
 143
 144         return true;
 145 }
 146
 147 static void test(Manager *m, const char *unit_name, int status_expected, int code_expected) {
 148         Unit *unit;
 149
 150         assert_se(unit_name);
 151
 152         assert_se(manager_load_startable_unit_or_warn(m, unit_name, NULL, &unit) >= 0);
 153         assert_se(UNIT_VTABLE(unit)->start(unit) >= 0);
 154         check(m, unit, status_expected, code_expected);
 155 }
 156
 157 static void test_exec_bindpaths(Manager *m) {
 158         assert_se(mkdir_p("/tmp/test-exec-bindpaths", 0755) >= 0);
 159         assert_se(mkdir_p("/tmp/test-exec-bindreadonlypaths", 0755) >= 0);
 160
 161         test(m, "exec-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 162
 163         (void) rm_rf("/tmp/test-exec-bindpaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 164         (void) rm_rf("/tmp/test-exec-bindreadonlypaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 165 }
 166
 167 static void test_exec_cpuaffinity(Manager *m) {
 168         _cleanup_cpu_free_ cpu_set_t *c = NULL;
 169         unsigned n;
 170
 171         assert_se(c = cpu_set_malloc(&n));
 172         assert_se(sched_getaffinity(0, CPU_ALLOC_SIZE(n), c) >= 0);
 173
 174         if (CPU_ISSET_S(0, CPU_ALLOC_SIZE(n), c) == 0) {
 175                 log_notice("Cannot use CPU 0, skipping %s", __func__);
 176                 return;
 177         }
 178
 179         test(m, "exec-cpuaffinity1.service", 0, CLD_EXITED);
 180         test(m, "exec-cpuaffinity2.service", 0, CLD_EXITED);
 181
 182         if (CPU_ISSET_S(1, CPU_ALLOC_SIZE(n), c) == 0 ||
 183             CPU_ISSET_S(2, CPU_ALLOC_SIZE(n), c) == 0) {
 184                 log_notice("Cannot use CPU 1 or 2, skipping remaining tests in %s", __func__);
 185                 return;
 186         }
 187
 188         test(m, "exec-cpuaffinity3.service", 0, CLD_EXITED);
 189 }
 190
 191 static void test_exec_workingdirectory(Manager *m) {
 192         assert_se(mkdir_p("/tmp/test-exec_workingdirectory", 0755) >= 0);
 193
 194         test(m, "exec-workingdirectory.service", 0, CLD_EXITED);
 195         test(m, "exec-workingdirectory-trailing-dot.service", 0, CLD_EXITED);
 196
 197         (void) rm_rf("/tmp/test-exec_workingdirectory", REMOVE_ROOT|REMOVE_PHYSICAL);
 198 }
 199
 200 static void test_exec_personality(Manager *m) {
 201 #if defined(__x86_64__)
 202         test(m, "exec-personality-x86-64.service", 0, CLD_EXITED);
 203
 204 #elif defined(__s390__)
 205         test(m, "exec-personality-s390.service", 0, CLD_EXITED);
 206
 207 #elif defined(__powerpc64__)
 208 #  if __BYTE_ORDER == __BIG_ENDIAN
 209         test(m, "exec-personality-ppc64.service", 0, CLD_EXITED);
 210 #  else
 211         test(m, "exec-personality-ppc64le.service", 0, CLD_EXITED);
 212 #  endif
 213
 214 #elif defined(__aarch64__)
 215         test(m, "exec-personality-aarch64.service", 0, CLD_EXITED);
 216
 217 #elif defined(__i386__)
 218         test(m, "exec-personality-x86.service", 0, CLD_EXITED);
 219 #else
 220         log_notice("Unknown personality, skipping %s", __func__);
 221 #endif
 222 }
 223
 224 static void test_exec_ignoresigpipe(Manager *m) {
 225         test(m, "exec-ignoresigpipe-yes.service", 0, CLD_EXITED);
 226         test(m, "exec-ignoresigpipe-no.service", SIGPIPE, CLD_KILLED);
 227 }
 228
 229 static void test_exec_privatetmp(Manager *m) {
 230         assert_se(touch("/tmp/test-exec_privatetmp") >= 0);
 231
 232         test(m, "exec-privatetmp-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 233         test(m, "exec-privatetmp-no.service", 0, CLD_EXITED);
 234
 235         unlink("/tmp/test-exec_privatetmp");
 236 }
 237
 238 static void test_exec_privatedevices(Manager *m) {
 239         int r;
 240
 241         if (detect_container() > 0) {
 242                 log_notice("Testing in container, skipping %s", __func__);
 243                 return;
 244         }
 245         if (!is_inaccessible_available()) {
 246                 log_notice("Testing without inaccessible, skipping %s", __func__);
 247                 return;
 248         }
 249
 250         test(m, "exec-privatedevices-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 251         test(m, "exec-privatedevices-no.service", 0, CLD_EXITED);
 252         test(m, "exec-privatedevices-disabled-by-prefix.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 253
 254         /* We use capsh to test if the capabilities are
 255          * properly set, so be sure that it exists */
 256         r = find_binary("capsh", NULL);
 257         if (r < 0) {
 258                 log_notice_errno(r, "Could not find capsh binary, skipping remaining tests in %s: %m", __func__);
 259                 return;
 260         }
 261
 262         test(m, "exec-privatedevices-yes-capability-mknod.service", 0, CLD_EXITED);
 263         test(m, "exec-privatedevices-no-capability-mknod.service", 0, CLD_EXITED);
 264         test(m, "exec-privatedevices-yes-capability-sys-rawio.service", 0, CLD_EXITED);
 265         test(m, "exec-privatedevices-no-capability-sys-rawio.service", 0, CLD_EXITED);
 266 }
 267
 268 static void test_exec_protectkernelmodules(Manager *m) {
 269         int r;
 270
 271         if (detect_container() > 0) {
 272                 log_notice("Testing in container, skipping %s", __func__);
 273                 return;
 274         }
 275         if (!is_inaccessible_available()) {
 276                 log_notice("Testing without inaccessible, skipping %s", __func__);
 277                 return;
 278         }
 279
 280         r = find_binary("capsh", NULL);
 281         if (r < 0) {
 282                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 283                 return;
 284         }
 285
 286         test(m, "exec-protectkernelmodules-no-capabilities.service", 0, CLD_EXITED);
 287         test(m, "exec-protectkernelmodules-yes-capabilities.service", 0, CLD_EXITED);
 288         test(m, "exec-protectkernelmodules-yes-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 289 }
 290
 291 static void test_exec_readonlypaths(Manager *m) {
 292
 293         test(m, "exec-readonlypaths-simple.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 294
 295         if (path_is_read_only_fs("/var") > 0) {
 296                 log_notice("Directory /var is readonly, skipping remaining tests in %s", __func__);
 297                 return;
 298         }
 299
 300         test(m, "exec-readonlypaths.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 301         test(m, "exec-readonlypaths-with-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 302         test(m, "exec-readonlypaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 303 }
 304
 305 static void test_exec_readwritepaths(Manager *m) {
 306
 307         if (path_is_read_only_fs("/") > 0) {
 308                 log_notice("Root directory is readonly, skipping %s", __func__);
 309                 return;
 310         }
 311
 312         test(m, "exec-readwritepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 313 }
 314
 315 static void test_exec_inaccessiblepaths(Manager *m) {
 316
 317         if (!is_inaccessible_available()) {
 318                 log_notice("Testing without inaccessible, skipping %s", __func__);
 319                 return;
 320         }
 321
 322         test(m, "exec-inaccessiblepaths-proc.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 323
 324         if (path_is_read_only_fs("/") > 0) {
 325                 log_notice("Root directory is readonly, skipping remaining tests in %s", __func__);
 326                 return;
 327         }
 328
 329         test(m, "exec-inaccessiblepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 330 }
 331
 332 static void test_exec_temporaryfilesystem(Manager *m) {
 333
 334         test(m, "exec-temporaryfilesystem-options.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 335         test(m, "exec-temporaryfilesystem-ro.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 336         test(m, "exec-temporaryfilesystem-rw.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 337         test(m, "exec-temporaryfilesystem-usr.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 338 }
 339
 340 static void test_exec_systemcallfilter(Manager *m) {
 341 #if HAVE_SECCOMP
 342         int r;
 343
 344         if (!is_seccomp_available()) {
 345                 log_notice("Seccomp not available, skipping %s", __func__);
 346                 return;
 347         }
 348
 349         test(m, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED);
 350         test(m, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED);
 351         test(m, "exec-systemcallfilter-failing.service", SIGSYS, CLD_KILLED);
 352         test(m, "exec-systemcallfilter-failing2.service", SIGSYS, CLD_KILLED);
 353
 354         r = find_binary("python3", NULL);
 355         if (r < 0) {
 356                 log_notice_errno(r, "Skipping remaining tests in %s, could not find python3 binary: %m", __func__);
 357                 return;
 358         }
 359
 360         test(m, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED);
 361         test(m, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED);
 362         test(m, "exec-systemcallfilter-with-errno-multi.service", errno_from_name("EILSEQ"), CLD_EXITED);
 363 #endif
 364 }
 365
 366 static void test_exec_systemcallerrornumber(Manager *m) {
 367 #if HAVE_SECCOMP
 368         int r;
 369
 370         if (!is_seccomp_available()) {
 371                 log_notice("Seccomp not available, skipping %s", __func__);
 372                 return;
 373         }
 374
 375         r = find_binary("python3", NULL);
 376         if (r < 0) {
 377                 log_notice_errno(r, "Skipping %s, could not find python3 binary: %m", __func__);
 378                 return;
 379         }
 380
 381         test(m, "exec-systemcallerrornumber-name.service", errno_from_name("EACCES"), CLD_EXITED);
 382         test(m, "exec-systemcallerrornumber-number.service", 255, CLD_EXITED);
 383 #endif
 384 }
 385
 386 static void test_exec_restrictnamespaces(Manager *m) {
 387 #if HAVE_SECCOMP
 388         if (!is_seccomp_available()) {
 389                 log_notice("Seccomp not available, skipping %s", __func__);
 390                 return;
 391         }
 392
 393         test(m, "exec-restrictnamespaces-no.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 394         test(m, "exec-restrictnamespaces-yes.service", 1, CLD_EXITED);
 395         test(m, "exec-restrictnamespaces-mnt.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 396         test(m, "exec-restrictnamespaces-mnt-blacklist.service", 1, CLD_EXITED);
 397         test(m, "exec-restrictnamespaces-merge-and.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 398         test(m, "exec-restrictnamespaces-merge-or.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 399         test(m, "exec-restrictnamespaces-merge-all.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 400 #endif
 401 }
 402
 403 static void test_exec_systemcallfilter_system(Manager *m) {
 404 #if HAVE_SECCOMP
 405         if (!is_seccomp_available()) {
 406                 log_notice("Seccomp not available, skipping %s", __func__);
 407                 return;
 408         }
 409
 410         test(m, "exec-systemcallfilter-system-user.service", 0, CLD_EXITED);
 411
 412         if (!check_nobody_user_and_group()) {
 413                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 414                 return;
 415         }
 416
 417         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 418                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 419                 return;
 420         }
 421
 422         test(m, "exec-systemcallfilter-system-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 423 #endif
 424 }
 425
 426 static void test_exec_user(Manager *m) {
 427         test(m, "exec-user.service", 0, CLD_EXITED);
 428
 429         if (!check_nobody_user_and_group()) {
 430                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 431                 return;
 432         }
 433
 434         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 435                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 436                 return;
 437         }
 438
 439         test(m, "exec-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 440 }
 441
 442 static void test_exec_group(Manager *m) {
 443         test(m, "exec-group.service", 0, CLD_EXITED);
 444
 445         if (!check_nobody_user_and_group()) {
 446                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 447                 return;
 448         }
 449
 450         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 451                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 452                 return;
 453         }
 454
 455         test(m, "exec-group-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 456 }
 457
 458 static void test_exec_supplementarygroups(Manager *m) {
 459         test(m, "exec-supplementarygroups.service", 0, CLD_EXITED);
 460         test(m, "exec-supplementarygroups-single-group.service", 0, CLD_EXITED);
 461         test(m, "exec-supplementarygroups-single-group-user.service", 0, CLD_EXITED);
 462         test(m, "exec-supplementarygroups-multiple-groups-default-group-user.service", 0, CLD_EXITED);
 463         test(m, "exec-supplementarygroups-multiple-groups-withgid.service", 0, CLD_EXITED);
 464         test(m, "exec-supplementarygroups-multiple-groups-withuid.service", 0, CLD_EXITED);
 465 }
 466
 467 static void test_exec_dynamicuser(Manager *m) {
 468
 469         test(m, "exec-dynamicuser-fixeduser.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 470         if (check_user_has_group_with_same_name("adm"))
 471                 test(m, "exec-dynamicuser-fixeduser-adm.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 472         if (check_user_has_group_with_same_name("games"))
 473                 test(m, "exec-dynamicuser-fixeduser-games.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 474         test(m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 475         test(m, "exec-dynamicuser-supplementarygroups.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 476         test(m, "exec-dynamicuser-statedir.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 477
 478         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 479         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 480         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 481         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 482
 483         test(m, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED);
 484         test(m, "exec-dynamicuser-statedir-migrate-step2.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 485
 486         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 487         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 488         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 489         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 490 }
 491
 492 static void test_exec_environment(Manager *m) {
 493         test(m, "exec-environment.service", 0, CLD_EXITED);
 494         test(m, "exec-environment-multiple.service", 0, CLD_EXITED);
 495         test(m, "exec-environment-empty.service", 0, CLD_EXITED);
 496 }
 497
 498 static void test_exec_environmentfile(Manager *m) {
 499         static const char e[] =
 500                 "VAR1='word1 word2'\n"
 501                 "VAR2=word3 \n"
 502                 "# comment1\n"
 503                 "\n"
 504                 "; comment2\n"
 505                 " ; # comment3\n"
 506                 "line without an equal\n"
 507                 "VAR3='$word 5 6'\n"
 508                 "VAR4='new\nline'\n"
 509                 "VAR5=password\\with\\backslashes";
 510         int r;
 511
 512         r = write_string_file("/tmp/test-exec_environmentfile.conf", e, WRITE_STRING_FILE_CREATE);
 513         assert_se(r == 0);
 514
 515         test(m, "exec-environmentfile.service", 0, CLD_EXITED);
 516
 517         (void) unlink("/tmp/test-exec_environmentfile.conf");
 518 }
 519
 520 static void test_exec_passenvironment(Manager *m) {
 521         /* test-execute runs under MANAGER_USER which, by default, forwards all
 522          * variables present in the environment, but only those that are
 523          * present _at the time it is created_!
 524          *
 525          * So these PassEnvironment checks are still expected to work, since we
 526          * are ensuring the variables are not present at manager creation (they
 527          * are unset explicitly in main) and are only set here.
 528          *
 529          * This is still a good approximation of how a test for MANAGER_SYSTEM
 530          * would work.
 531          */
 532         assert_se(setenv("VAR1", "word1 word2", 1) == 0);
 533         assert_se(setenv("VAR2", "word3", 1) == 0);
 534         assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
 535         assert_se(setenv("VAR4", "new\nline", 1) == 0);
 536         assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
 537         test(m, "exec-passenvironment.service", 0, CLD_EXITED);
 538         test(m, "exec-passenvironment-repeated.service", 0, CLD_EXITED);
 539         test(m, "exec-passenvironment-empty.service", 0, CLD_EXITED);
 540         assert_se(unsetenv("VAR1") == 0);
 541         assert_se(unsetenv("VAR2") == 0);
 542         assert_se(unsetenv("VAR3") == 0);
 543         assert_se(unsetenv("VAR4") == 0);
 544         assert_se(unsetenv("VAR5") == 0);
 545         test(m, "exec-passenvironment-absent.service", 0, CLD_EXITED);
 546 }
 547
 548 static void test_exec_umask(Manager *m) {
 549         test(m, "exec-umask-default.service", 0, CLD_EXITED);
 550         test(m, "exec-umask-0177.service", 0, CLD_EXITED);
 551 }
 552
 553 static void test_exec_runtimedirectory(Manager *m) {
 554         test(m, "exec-runtimedirectory.service", 0, CLD_EXITED);
 555         test(m, "exec-runtimedirectory-mode.service", 0, CLD_EXITED);
 556         test(m, "exec-runtimedirectory-owner.service", 0, CLD_EXITED);
 557
 558         if (!check_nobody_user_and_group()) {
 559                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 560                 return;
 561         }
 562
 563         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 564                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 565                 return;
 566         }
 567
 568         test(m, "exec-runtimedirectory-owner-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 569 }
 570
 571 static void test_exec_capabilityboundingset(Manager *m) {
 572         int r;
 573
 574         r = find_binary("capsh", NULL);
 575         if (r < 0) {
 576                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 577                 return;
 578         }
 579
 580         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 581             have_effective_cap(CAP_FOWNER) <= 0 ||
 582             have_effective_cap(CAP_KILL) <= 0) {
 583                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 584                 return;
 585         }
 586
 587         test(m, "exec-capabilityboundingset-simple.service", 0, CLD_EXITED);
 588         test(m, "exec-capabilityboundingset-reset.service", 0, CLD_EXITED);
 589         test(m, "exec-capabilityboundingset-merge.service", 0, CLD_EXITED);
 590         test(m, "exec-capabilityboundingset-invert.service", 0, CLD_EXITED);
 591 }
 592
 593 static void test_exec_basic(Manager *m) {
 594         test(m, "exec-basic.service", 0, CLD_EXITED);
 595 }
 596
 597 static void test_exec_ambientcapabilities(Manager *m) {
 598         int r;
 599
 600         /* Check if the kernel has support for ambient capabilities. Run
 601          * the tests only if that's the case. Clearing all ambient
 602          * capabilities is fine, since we are expecting them to be unset
 603          * in the first place for the tests. */
 604         r = prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0);
 605         if (r < 0 && IN_SET(errno, EINVAL, EOPNOTSUPP, ENOSYS)) {
 606                 log_notice("Skipping %s, the kernel does not support ambient capabilities", __func__);
 607                 return;
 608         }
 609
 610         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 611             have_effective_cap(CAP_NET_RAW) <= 0) {
 612                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 613                 return;
 614         }
 615
 616         test(m, "exec-ambientcapabilities.service", 0, CLD_EXITED);
 617         test(m, "exec-ambientcapabilities-merge.service", 0, CLD_EXITED);
 618
 619         if (!check_nobody_user_and_group()) {
 620                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 621                 return;
 622         }
 623
 624         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 625                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 626                 return;
 627         }
 628
 629         test(m, "exec-ambientcapabilities-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 630         test(m, "exec-ambientcapabilities-merge-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 631 }
 632
 633 static void test_exec_privatenetwork(Manager *m) {
 634         int r;
 635
 636         r = find_binary("ip", NULL);
 637         if (r < 0) {
 638                 log_notice_errno(r, "Skipping %s, could not find ip binary: %m", __func__);
 639                 return;
 640         }
 641
 642         test(m, "exec-privatenetwork-yes.service", can_unshare ? 0 : EXIT_NETWORK, CLD_EXITED);
 643 }
 644
 645 static void test_exec_oomscoreadjust(Manager *m) {
 646         test(m, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED);
 647
 648         if (detect_container() > 0) {
 649                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 650                 return;
 651         }
 652         test(m, "exec-oomscoreadjust-negative.service", 0, CLD_EXITED);
 653 }
 654
 655 static void test_exec_ioschedulingclass(Manager *m) {
 656         test(m, "exec-ioschedulingclass-none.service", 0, CLD_EXITED);
 657         test(m, "exec-ioschedulingclass-idle.service", 0, CLD_EXITED);
 658         test(m, "exec-ioschedulingclass-best-effort.service", 0, CLD_EXITED);
 659
 660         if (detect_container() > 0) {
 661                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 662                 return;
 663         }
 664         test(m, "exec-ioschedulingclass-realtime.service", 0, CLD_EXITED);
 665 }
 666
 667 static void test_exec_unsetenvironment(Manager *m) {
 668         test(m, "exec-unsetenvironment.service", 0, CLD_EXITED);
 669 }
 670
 671 static void test_exec_specifier(Manager *m) {
 672         test(m, "exec-specifier.service", 0, CLD_EXITED);
 673         test(m, "exec-specifier@foo-bar.service", 0, CLD_EXITED);
 674         test(m, "exec-specifier-interpolation.service", 0, CLD_EXITED);
 675 }
 676
 677 static void test_exec_standardinput(Manager *m) {
 678         test(m, "exec-standardinput-data.service", 0, CLD_EXITED);
 679         test(m, "exec-standardinput-file.service", 0, CLD_EXITED);
 680 }
 681
 682 static void test_exec_standardoutput(Manager *m) {
 683         test(m, "exec-standardoutput-file.service", 0, CLD_EXITED);
 684 }
 685
 686 static void test_exec_standardoutput_append(Manager *m) {
 687         test(m, "exec-standardoutput-append.service", 0, CLD_EXITED);
 688 }
 689
 690 static int run_tests(UnitFileScope scope, const test_function_t *tests) {
 691         const test_function_t *test = NULL;
 692         _cleanup_(manager_freep) Manager *m = NULL;
 693         int r;
 694
 695         assert_se(tests);
 696
 697         r = manager_new(scope, MANAGER_TEST_RUN_BASIC, &m);
 698         if (MANAGER_SKIP_TEST(r))
 699                 return log_tests_skipped_errno(r, "manager_new");
 700         assert_se(r >= 0);
 701         assert_se(manager_startup(m, NULL, NULL) >= 0);
 702
 703         for (test = tests; test && *test; test++)
 704                 (*test)(m);
 705
 706         return 0;
 707 }
 708
 709 int main(int argc, char *argv[]) {
 710         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
 711         _cleanup_free_ char *test_execute_path = NULL;
 712         _cleanup_hashmap_free_ Hashmap *s = NULL;
 713         static const test_function_t user_tests[] = {
 714                 test_exec_basic,
 715                 test_exec_ambientcapabilities,
 716                 test_exec_bindpaths,
 717                 test_exec_capabilityboundingset,
 718                 test_exec_cpuaffinity,
 719                 test_exec_environment,
 720                 test_exec_environmentfile,
 721                 test_exec_group,
 722                 test_exec_ignoresigpipe,
 723                 test_exec_inaccessiblepaths,
 724                 test_exec_ioschedulingclass,
 725                 test_exec_oomscoreadjust,
 726                 test_exec_passenvironment,
 727                 test_exec_personality,
 728                 test_exec_privatedevices,
 729                 test_exec_privatenetwork,
 730                 test_exec_privatetmp,
 731                 test_exec_protectkernelmodules,
 732                 test_exec_readonlypaths,
 733                 test_exec_readwritepaths,
 734                 test_exec_restrictnamespaces,
 735                 test_exec_runtimedirectory,
 736                 test_exec_standardinput,
 737                 test_exec_standardoutput,
 738                 test_exec_standardoutput_append,
 739                 test_exec_supplementarygroups,
 740                 test_exec_systemcallerrornumber,
 741                 test_exec_systemcallfilter,
 742                 test_exec_temporaryfilesystem,
 743                 test_exec_umask,
 744                 test_exec_unsetenvironment,
 745                 test_exec_user,
 746                 test_exec_workingdirectory,
 747                 NULL,
 748         };
 749         static const test_function_t system_tests[] = {
 750                 test_exec_dynamicuser,
 751                 test_exec_specifier,
 752                 test_exec_systemcallfilter_system,
 753                 NULL,
 754         };
 755         int r;
 756
 757         test_setup_logging(LOG_DEBUG);
 758
 759         (void) unsetenv("USER");
 760         (void) unsetenv("LOGNAME");
 761         (void) unsetenv("SHELL");
 762
 763         can_unshare = have_namespaces();
 764
 765         /* It is needed otherwise cgroup creation fails */
 766         if (getuid() != 0)
 767                 return log_tests_skipped("not root");
 768
 769         r = enter_cgroup_subroot();
 770         if (r == -ENOMEDIUM)
 771                 return log_tests_skipped("cgroupfs not available");
 772
 773         assert_se(runtime_dir = setup_fake_runtime_dir());
 774         test_execute_path = path_join(NULL, get_testdata_dir(), "test-execute");
 775         assert_se(set_unit_path(test_execute_path) >= 0);
 776
 777         /* Unset VAR1, VAR2 and VAR3 which are used in the PassEnvironment test
 778          * cases, otherwise (and if they are present in the environment),
 779          * `manager_default_environment` will copy them into the default
 780          * environment which is passed to each created job, which will make the
 781          * tests that expect those not to be present to fail.
 782          */
 783         assert_se(unsetenv("VAR1") == 0);
 784         assert_se(unsetenv("VAR2") == 0);
 785         assert_se(unsetenv("VAR3") == 0);
 786
 787         r = run_tests(UNIT_FILE_USER, user_tests);
 788         if (r != 0)
 789                 return r;
 790
 791         r = run_tests(UNIT_FILE_SYSTEM, system_tests);
 792         if (r != 0)
 793                 return r;
 794
 795 #if HAVE_SECCOMP
 796         /* The following tests are for 1beab8b0d0ff2d7d1436b52d4a0c3d56dc908962. */
 797         if (!is_seccomp_available()) {
 798                 log_notice("Seccomp not available, skipping unshare() filtered tests.");
 799                 return 0;
 800         }
 801
 802         assert_se(s = hashmap_new(NULL));
 803         r = seccomp_syscall_resolve_name("unshare");
 804         assert_se(r != __NR_SCMP_ERROR);
 805         assert_se(hashmap_put(s, UINT32_TO_PTR(r + 1), INT_TO_PTR(-1)) >= 0);
 806         assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, s, SCMP_ACT_ERRNO(EOPNOTSUPP), true) >= 0);
 807         assert_se(unshare(CLONE_NEWNS) < 0);
 808         assert_se(errno == EOPNOTSUPP);
 809
 810         can_unshare = false;
 811
 812         r = run_tests(UNIT_FILE_USER, user_tests);
 813         if (r != 0)
 814                 return r;
 815
 816         return run_tests(UNIT_FILE_SYSTEM, system_tests);
 817 #else
 818         return 0;
 819 #endif
 820 }