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                         r = unit_kill(unit, KILL_ALL, SIGKILL, NULL);
  58                         if (r < 0)
  59                                 log_error_errno(r, "Failed to kill %s: %m", unit->id);
  60                         exit(EXIT_FAILURE);
  61                 }
  62         }
  63         exec_status_dump(&service->main_exec_status, stdout, "\t");
  64         assert_se(service->main_exec_status.status == status_expected);
  65         assert_se(service->main_exec_status.code == code_expected);
  66 }
  67
  68 static bool check_nobody_user_and_group(void) {
  69         static int cache = -1;
  70         struct passwd *p;
  71         struct group *g;
  72
  73         if (cache >= 0)
  74                 return !!cache;
  75
  76         if (!synthesize_nobody())
  77                 goto invalid;
  78
  79         p = getpwnam(NOBODY_USER_NAME);
  80         if (!p ||
  81             !streq(p->pw_name, NOBODY_USER_NAME) ||
  82             p->pw_uid != UID_NOBODY ||
  83             p->pw_gid != GID_NOBODY)
  84                 goto invalid;
  85
  86         p = getpwuid(UID_NOBODY);
  87         if (!p ||
  88             !streq(p->pw_name, NOBODY_USER_NAME) ||
  89             p->pw_uid != UID_NOBODY ||
  90             p->pw_gid != GID_NOBODY)
  91                 goto invalid;
  92
  93         g = getgrnam(NOBODY_GROUP_NAME);
  94         if (!g ||
  95             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
  96             g->gr_gid != GID_NOBODY)
  97                 goto invalid;
  98
  99         g = getgrgid(GID_NOBODY);
 100         if (!g ||
 101             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
 102             g->gr_gid != GID_NOBODY)
 103                 goto invalid;
 104
 105         cache = 1;
 106         return true;
 107
 108 invalid:
 109         cache = 0;
 110         return false;
 111 }
 112
 113 static bool check_user_has_group_with_same_name(const char *name) {
 114         struct passwd *p;
 115         struct group *g;
 116
 117         assert(name);
 118
 119         p = getpwnam(name);
 120         if (!p ||
 121             !streq(p->pw_name, name))
 122                 return false;
 123
 124         g = getgrgid(p->pw_gid);
 125         if (!g ||
 126             !streq(g->gr_name, name))
 127                 return false;
 128
 129         return true;
 130 }
 131
 132 static bool is_inaccessible_available(void) {
 133         char *p;
 134
 135         FOREACH_STRING(p,
 136                 "/run/systemd/inaccessible/reg",
 137                 "/run/systemd/inaccessible/dir",
 138                 "/run/systemd/inaccessible/chr",
 139                 "/run/systemd/inaccessible/blk",
 140                 "/run/systemd/inaccessible/fifo",
 141                 "/run/systemd/inaccessible/sock"
 142         ) {
 143                 if (access(p, F_OK) < 0)
 144                         return false;
 145         }
 146
 147         return true;
 148 }
 149
 150 static void test(Manager *m, const char *unit_name, int status_expected, int code_expected) {
 151         Unit *unit;
 152
 153         assert_se(unit_name);
 154
 155         assert_se(manager_load_startable_unit_or_warn(m, unit_name, NULL, &unit) >= 0);
 156         assert_se(unit_start(unit) >= 0);
 157         check(m, unit, status_expected, code_expected);
 158 }
 159
 160 static void test_exec_bindpaths(Manager *m) {
 161         assert_se(mkdir_p("/tmp/test-exec-bindpaths", 0755) >= 0);
 162         assert_se(mkdir_p("/tmp/test-exec-bindreadonlypaths", 0755) >= 0);
 163
 164         test(m, "exec-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 165
 166         (void) rm_rf("/tmp/test-exec-bindpaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 167         (void) rm_rf("/tmp/test-exec-bindreadonlypaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 168 }
 169
 170 static void test_exec_cpuaffinity(Manager *m) {
 171         _cleanup_cpu_free_ cpu_set_t *c = NULL;
 172         unsigned n;
 173
 174         assert_se(c = cpu_set_malloc(&n));
 175         assert_se(sched_getaffinity(0, CPU_ALLOC_SIZE(n), c) >= 0);
 176
 177         if (CPU_ISSET_S(0, CPU_ALLOC_SIZE(n), c) == 0) {
 178                 log_notice("Cannot use CPU 0, skipping %s", __func__);
 179                 return;
 180         }
 181
 182         test(m, "exec-cpuaffinity1.service", 0, CLD_EXITED);
 183         test(m, "exec-cpuaffinity2.service", 0, CLD_EXITED);
 184
 185         if (CPU_ISSET_S(1, CPU_ALLOC_SIZE(n), c) == 0 ||
 186             CPU_ISSET_S(2, CPU_ALLOC_SIZE(n), c) == 0) {
 187                 log_notice("Cannot use CPU 1 or 2, skipping remaining tests in %s", __func__);
 188                 return;
 189         }
 190
 191         test(m, "exec-cpuaffinity3.service", 0, CLD_EXITED);
 192 }
 193
 194 static void test_exec_workingdirectory(Manager *m) {
 195         assert_se(mkdir_p("/tmp/test-exec_workingdirectory", 0755) >= 0);
 196
 197         test(m, "exec-workingdirectory.service", 0, CLD_EXITED);
 198         test(m, "exec-workingdirectory-trailing-dot.service", 0, CLD_EXITED);
 199
 200         (void) rm_rf("/tmp/test-exec_workingdirectory", REMOVE_ROOT|REMOVE_PHYSICAL);
 201 }
 202
 203 static void test_exec_personality(Manager *m) {
 204 #if defined(__x86_64__)
 205         test(m, "exec-personality-x86-64.service", 0, CLD_EXITED);
 206
 207 #elif defined(__s390__)
 208         test(m, "exec-personality-s390.service", 0, CLD_EXITED);
 209
 210 #elif defined(__powerpc64__)
 211 #  if __BYTE_ORDER == __BIG_ENDIAN
 212         test(m, "exec-personality-ppc64.service", 0, CLD_EXITED);
 213 #  else
 214         test(m, "exec-personality-ppc64le.service", 0, CLD_EXITED);
 215 #  endif
 216
 217 #elif defined(__aarch64__)
 218         test(m, "exec-personality-aarch64.service", 0, CLD_EXITED);
 219
 220 #elif defined(__i386__)
 221         test(m, "exec-personality-x86.service", 0, CLD_EXITED);
 222 #else
 223         log_notice("Unknown personality, skipping %s", __func__);
 224 #endif
 225 }
 226
 227 static void test_exec_ignoresigpipe(Manager *m) {
 228         test(m, "exec-ignoresigpipe-yes.service", 0, CLD_EXITED);
 229         test(m, "exec-ignoresigpipe-no.service", SIGPIPE, CLD_KILLED);
 230 }
 231
 232 static void test_exec_privatetmp(Manager *m) {
 233         assert_se(touch("/tmp/test-exec_privatetmp") >= 0);
 234
 235         test(m, "exec-privatetmp-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 236         test(m, "exec-privatetmp-no.service", 0, CLD_EXITED);
 237
 238         unlink("/tmp/test-exec_privatetmp");
 239 }
 240
 241 static void test_exec_privatedevices(Manager *m) {
 242         int r;
 243
 244         if (detect_container() > 0) {
 245                 log_notice("Testing in container, skipping %s", __func__);
 246                 return;
 247         }
 248         if (!is_inaccessible_available()) {
 249                 log_notice("Testing without inaccessible, skipping %s", __func__);
 250                 return;
 251         }
 252
 253         test(m, "exec-privatedevices-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 254         test(m, "exec-privatedevices-no.service", 0, CLD_EXITED);
 255         test(m, "exec-privatedevices-disabled-by-prefix.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 256
 257         /* We use capsh to test if the capabilities are
 258          * properly set, so be sure that it exists */
 259         r = find_binary("capsh", NULL);
 260         if (r < 0) {
 261                 log_notice_errno(r, "Could not find capsh binary, skipping remaining tests in %s: %m", __func__);
 262                 return;
 263         }
 264
 265         test(m, "exec-privatedevices-yes-capability-mknod.service", 0, CLD_EXITED);
 266         test(m, "exec-privatedevices-no-capability-mknod.service", 0, CLD_EXITED);
 267         test(m, "exec-privatedevices-yes-capability-sys-rawio.service", 0, CLD_EXITED);
 268         test(m, "exec-privatedevices-no-capability-sys-rawio.service", 0, CLD_EXITED);
 269 }
 270
 271 static void test_exec_protectkernelmodules(Manager *m) {
 272         int r;
 273
 274         if (detect_container() > 0) {
 275                 log_notice("Testing in container, skipping %s", __func__);
 276                 return;
 277         }
 278         if (!is_inaccessible_available()) {
 279                 log_notice("Testing without inaccessible, skipping %s", __func__);
 280                 return;
 281         }
 282
 283         r = find_binary("capsh", NULL);
 284         if (r < 0) {
 285                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 286                 return;
 287         }
 288
 289         test(m, "exec-protectkernelmodules-no-capabilities.service", 0, CLD_EXITED);
 290         test(m, "exec-protectkernelmodules-yes-capabilities.service", 0, CLD_EXITED);
 291         test(m, "exec-protectkernelmodules-yes-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 292 }
 293
 294 static void test_exec_readonlypaths(Manager *m) {
 295
 296         test(m, "exec-readonlypaths-simple.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 297
 298         if (path_is_read_only_fs("/var") > 0) {
 299                 log_notice("Directory /var is readonly, skipping remaining tests in %s", __func__);
 300                 return;
 301         }
 302
 303         test(m, "exec-readonlypaths.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 304         test(m, "exec-readonlypaths-with-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 305         test(m, "exec-readonlypaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 306 }
 307
 308 static void test_exec_readwritepaths(Manager *m) {
 309
 310         if (path_is_read_only_fs("/") > 0) {
 311                 log_notice("Root directory is readonly, skipping %s", __func__);
 312                 return;
 313         }
 314
 315         test(m, "exec-readwritepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 316 }
 317
 318 static void test_exec_inaccessiblepaths(Manager *m) {
 319
 320         if (!is_inaccessible_available()) {
 321                 log_notice("Testing without inaccessible, skipping %s", __func__);
 322                 return;
 323         }
 324
 325         test(m, "exec-inaccessiblepaths-proc.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 326
 327         if (path_is_read_only_fs("/") > 0) {
 328                 log_notice("Root directory is readonly, skipping remaining tests in %s", __func__);
 329                 return;
 330         }
 331
 332         test(m, "exec-inaccessiblepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 333 }
 334
 335 static void test_exec_temporaryfilesystem(Manager *m) {
 336
 337         test(m, "exec-temporaryfilesystem-options.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 338         test(m, "exec-temporaryfilesystem-ro.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 339         test(m, "exec-temporaryfilesystem-rw.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 340         test(m, "exec-temporaryfilesystem-usr.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 341 }
 342
 343 static void test_exec_systemcallfilter(Manager *m) {
 344 #if HAVE_SECCOMP
 345         int r;
 346
 347         if (!is_seccomp_available()) {
 348                 log_notice("Seccomp not available, skipping %s", __func__);
 349                 return;
 350         }
 351
 352         test(m, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED);
 353         test(m, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED);
 354         test(m, "exec-systemcallfilter-failing.service", SIGSYS, CLD_KILLED);
 355         test(m, "exec-systemcallfilter-failing2.service", SIGSYS, CLD_KILLED);
 356
 357         r = find_binary("python3", NULL);
 358         if (r < 0) {
 359                 log_notice_errno(r, "Skipping remaining tests in %s, could not find python3 binary: %m", __func__);
 360                 return;
 361         }
 362
 363         test(m, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED);
 364         test(m, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED);
 365         test(m, "exec-systemcallfilter-with-errno-multi.service", errno_from_name("EILSEQ"), CLD_EXITED);
 366 #endif
 367 }
 368
 369 static void test_exec_systemcallerrornumber(Manager *m) {
 370 #if HAVE_SECCOMP
 371         int r;
 372
 373         if (!is_seccomp_available()) {
 374                 log_notice("Seccomp not available, skipping %s", __func__);
 375                 return;
 376         }
 377
 378         r = find_binary("python3", NULL);
 379         if (r < 0) {
 380                 log_notice_errno(r, "Skipping %s, could not find python3 binary: %m", __func__);
 381                 return;
 382         }
 383
 384         test(m, "exec-systemcallerrornumber-name.service", errno_from_name("EACCES"), CLD_EXITED);
 385         test(m, "exec-systemcallerrornumber-number.service", 255, CLD_EXITED);
 386 #endif
 387 }
 388
 389 static void test_exec_restrictnamespaces(Manager *m) {
 390 #if HAVE_SECCOMP
 391         if (!is_seccomp_available()) {
 392                 log_notice("Seccomp not available, skipping %s", __func__);
 393                 return;
 394         }
 395
 396         test(m, "exec-restrictnamespaces-no.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 397         test(m, "exec-restrictnamespaces-yes.service", 1, CLD_EXITED);
 398         test(m, "exec-restrictnamespaces-mnt.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 399         test(m, "exec-restrictnamespaces-mnt-blacklist.service", 1, CLD_EXITED);
 400         test(m, "exec-restrictnamespaces-merge-and.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 401         test(m, "exec-restrictnamespaces-merge-or.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 402         test(m, "exec-restrictnamespaces-merge-all.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 403 #endif
 404 }
 405
 406 static void test_exec_systemcallfilter_system(Manager *m) {
 407 #if HAVE_SECCOMP
 408         if (!is_seccomp_available()) {
 409                 log_notice("Seccomp not available, skipping %s", __func__);
 410                 return;
 411         }
 412
 413         test(m, "exec-systemcallfilter-system-user.service", 0, CLD_EXITED);
 414
 415         if (!check_nobody_user_and_group()) {
 416                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 417                 return;
 418         }
 419
 420         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 421                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 422                 return;
 423         }
 424
 425         test(m, "exec-systemcallfilter-system-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 426 #endif
 427 }
 428
 429 static void test_exec_user(Manager *m) {
 430         test(m, "exec-user.service", 0, CLD_EXITED);
 431
 432         if (!check_nobody_user_and_group()) {
 433                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 434                 return;
 435         }
 436
 437         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 438                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 439                 return;
 440         }
 441
 442         test(m, "exec-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 443 }
 444
 445 static void test_exec_group(Manager *m) {
 446         test(m, "exec-group.service", 0, CLD_EXITED);
 447
 448         if (!check_nobody_user_and_group()) {
 449                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 450                 return;
 451         }
 452
 453         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 454                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 455                 return;
 456         }
 457
 458         test(m, "exec-group-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 459 }
 460
 461 static void test_exec_supplementarygroups(Manager *m) {
 462         test(m, "exec-supplementarygroups.service", 0, CLD_EXITED);
 463         test(m, "exec-supplementarygroups-single-group.service", 0, CLD_EXITED);
 464         test(m, "exec-supplementarygroups-single-group-user.service", 0, CLD_EXITED);
 465         test(m, "exec-supplementarygroups-multiple-groups-default-group-user.service", 0, CLD_EXITED);
 466         test(m, "exec-supplementarygroups-multiple-groups-withgid.service", 0, CLD_EXITED);
 467         test(m, "exec-supplementarygroups-multiple-groups-withuid.service", 0, CLD_EXITED);
 468 }
 469
 470 static void test_exec_dynamicuser(Manager *m) {
 471
 472         test(m, "exec-dynamicuser-fixeduser.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 473         if (check_user_has_group_with_same_name("adm"))
 474                 test(m, "exec-dynamicuser-fixeduser-adm.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 475         if (check_user_has_group_with_same_name("games"))
 476                 test(m, "exec-dynamicuser-fixeduser-games.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 477         test(m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 478         test(m, "exec-dynamicuser-supplementarygroups.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 479         test(m, "exec-dynamicuser-statedir.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 480
 481         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 482         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 483         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 484         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 485
 486         test(m, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED);
 487         test(m, "exec-dynamicuser-statedir-migrate-step2.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 488
 489         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 490         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 491         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 492         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 493 }
 494
 495 static void test_exec_environment(Manager *m) {
 496         test(m, "exec-environment.service", 0, CLD_EXITED);
 497         test(m, "exec-environment-multiple.service", 0, CLD_EXITED);
 498         test(m, "exec-environment-empty.service", 0, CLD_EXITED);
 499 }
 500
 501 static void test_exec_environmentfile(Manager *m) {
 502         static const char e[] =
 503                 "VAR1='word1 word2'\n"
 504                 "VAR2=word3 \n"
 505                 "# comment1\n"
 506                 "\n"
 507                 "; comment2\n"
 508                 " ; # comment3\n"
 509                 "line without an equal\n"
 510                 "VAR3='$word 5 6'\n"
 511                 "VAR4='new\nline'\n"
 512                 "VAR5=password\\with\\backslashes";
 513         int r;
 514
 515         r = write_string_file("/tmp/test-exec_environmentfile.conf", e, WRITE_STRING_FILE_CREATE);
 516         assert_se(r == 0);
 517
 518         test(m, "exec-environmentfile.service", 0, CLD_EXITED);
 519
 520         (void) unlink("/tmp/test-exec_environmentfile.conf");
 521 }
 522
 523 static void test_exec_passenvironment(Manager *m) {
 524         /* test-execute runs under MANAGER_USER which, by default, forwards all
 525          * variables present in the environment, but only those that are
 526          * present _at the time it is created_!
 527          *
 528          * So these PassEnvironment checks are still expected to work, since we
 529          * are ensuring the variables are not present at manager creation (they
 530          * are unset explicitly in main) and are only set here.
 531          *
 532          * This is still a good approximation of how a test for MANAGER_SYSTEM
 533          * would work.
 534          */
 535         assert_se(setenv("VAR1", "word1 word2", 1) == 0);
 536         assert_se(setenv("VAR2", "word3", 1) == 0);
 537         assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
 538         assert_se(setenv("VAR4", "new\nline", 1) == 0);
 539         assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
 540         test(m, "exec-passenvironment.service", 0, CLD_EXITED);
 541         test(m, "exec-passenvironment-repeated.service", 0, CLD_EXITED);
 542         test(m, "exec-passenvironment-empty.service", 0, CLD_EXITED);
 543         assert_se(unsetenv("VAR1") == 0);
 544         assert_se(unsetenv("VAR2") == 0);
 545         assert_se(unsetenv("VAR3") == 0);
 546         assert_se(unsetenv("VAR4") == 0);
 547         assert_se(unsetenv("VAR5") == 0);
 548         test(m, "exec-passenvironment-absent.service", 0, CLD_EXITED);
 549 }
 550
 551 static void test_exec_umask(Manager *m) {
 552         test(m, "exec-umask-default.service", 0, CLD_EXITED);
 553         test(m, "exec-umask-0177.service", 0, CLD_EXITED);
 554 }
 555
 556 static void test_exec_runtimedirectory(Manager *m) {
 557         test(m, "exec-runtimedirectory.service", 0, CLD_EXITED);
 558         test(m, "exec-runtimedirectory-mode.service", 0, CLD_EXITED);
 559         test(m, "exec-runtimedirectory-owner.service", 0, CLD_EXITED);
 560
 561         if (!check_nobody_user_and_group()) {
 562                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 563                 return;
 564         }
 565
 566         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 567                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 568                 return;
 569         }
 570
 571         test(m, "exec-runtimedirectory-owner-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 572 }
 573
 574 static void test_exec_capabilityboundingset(Manager *m) {
 575         int r;
 576
 577         r = find_binary("capsh", NULL);
 578         if (r < 0) {
 579                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 580                 return;
 581         }
 582
 583         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 584             have_effective_cap(CAP_FOWNER) <= 0 ||
 585             have_effective_cap(CAP_KILL) <= 0) {
 586                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 587                 return;
 588         }
 589
 590         test(m, "exec-capabilityboundingset-simple.service", 0, CLD_EXITED);
 591         test(m, "exec-capabilityboundingset-reset.service", 0, CLD_EXITED);
 592         test(m, "exec-capabilityboundingset-merge.service", 0, CLD_EXITED);
 593         test(m, "exec-capabilityboundingset-invert.service", 0, CLD_EXITED);
 594 }
 595
 596 static void test_exec_basic(Manager *m) {
 597         test(m, "exec-basic.service", 0, CLD_EXITED);
 598 }
 599
 600 static void test_exec_ambientcapabilities(Manager *m) {
 601         int r;
 602
 603         /* Check if the kernel has support for ambient capabilities. Run
 604          * the tests only if that's the case. Clearing all ambient
 605          * capabilities is fine, since we are expecting them to be unset
 606          * in the first place for the tests. */
 607         r = prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0);
 608         if (r < 0 && IN_SET(errno, EINVAL, EOPNOTSUPP, ENOSYS)) {
 609                 log_notice("Skipping %s, the kernel does not support ambient capabilities", __func__);
 610                 return;
 611         }
 612
 613         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 614             have_effective_cap(CAP_NET_RAW) <= 0) {
 615                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 616                 return;
 617         }
 618
 619         test(m, "exec-ambientcapabilities.service", 0, CLD_EXITED);
 620         test(m, "exec-ambientcapabilities-merge.service", 0, CLD_EXITED);
 621
 622         if (!check_nobody_user_and_group()) {
 623                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 624                 return;
 625         }
 626
 627         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 628                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 629                 return;
 630         }
 631
 632         test(m, "exec-ambientcapabilities-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 633         test(m, "exec-ambientcapabilities-merge-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 634 }
 635
 636 static void test_exec_privatenetwork(Manager *m) {
 637         int r;
 638
 639         r = find_binary("ip", NULL);
 640         if (r < 0) {
 641                 log_notice_errno(r, "Skipping %s, could not find ip binary: %m", __func__);
 642                 return;
 643         }
 644
 645         test(m, "exec-privatenetwork-yes.service", can_unshare ? 0 : EXIT_NETWORK, CLD_EXITED);
 646 }
 647
 648 static void test_exec_oomscoreadjust(Manager *m) {
 649         test(m, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED);
 650
 651         if (detect_container() > 0) {
 652                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 653                 return;
 654         }
 655         test(m, "exec-oomscoreadjust-negative.service", 0, CLD_EXITED);
 656 }
 657
 658 static void test_exec_ioschedulingclass(Manager *m) {
 659         test(m, "exec-ioschedulingclass-none.service", 0, CLD_EXITED);
 660         test(m, "exec-ioschedulingclass-idle.service", 0, CLD_EXITED);
 661         test(m, "exec-ioschedulingclass-best-effort.service", 0, CLD_EXITED);
 662
 663         if (detect_container() > 0) {
 664                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 665                 return;
 666         }
 667         test(m, "exec-ioschedulingclass-realtime.service", 0, CLD_EXITED);
 668 }
 669
 670 static void test_exec_unsetenvironment(Manager *m) {
 671         test(m, "exec-unsetenvironment.service", 0, CLD_EXITED);
 672 }
 673
 674 static void test_exec_specifier(Manager *m) {
 675         test(m, "exec-specifier.service", 0, CLD_EXITED);
 676         test(m, "exec-specifier@foo-bar.service", 0, CLD_EXITED);
 677         test(m, "exec-specifier-interpolation.service", 0, CLD_EXITED);
 678 }
 679
 680 static void test_exec_standardinput(Manager *m) {
 681         test(m, "exec-standardinput-data.service", 0, CLD_EXITED);
 682         test(m, "exec-standardinput-file.service", 0, CLD_EXITED);
 683 }
 684
 685 static void test_exec_standardoutput(Manager *m) {
 686         test(m, "exec-standardoutput-file.service", 0, CLD_EXITED);
 687 }
 688
 689 static void test_exec_standardoutput_append(Manager *m) {
 690         test(m, "exec-standardoutput-append.service", 0, CLD_EXITED);
 691 }
 692
 693 static int run_tests(UnitFileScope scope, const test_function_t *tests) {
 694         const test_function_t *test = NULL;
 695         _cleanup_(manager_freep) Manager *m = NULL;
 696         int r;
 697
 698         assert_se(tests);
 699
 700         r = manager_new(scope, MANAGER_TEST_RUN_BASIC, &m);
 701         if (MANAGER_SKIP_TEST(r))
 702                 return log_tests_skipped_errno(r, "manager_new");
 703         assert_se(r >= 0);
 704         assert_se(manager_startup(m, NULL, NULL) >= 0);
 705
 706         for (test = tests; test && *test; test++)
 707                 (*test)(m);
 708
 709         return 0;
 710 }
 711
 712 int main(int argc, char *argv[]) {
 713         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
 714         _cleanup_free_ char *test_execute_path = NULL;
 715         _cleanup_hashmap_free_ Hashmap *s = NULL;
 716         static const test_function_t user_tests[] = {
 717                 test_exec_basic,
 718                 test_exec_ambientcapabilities,
 719                 test_exec_bindpaths,
 720                 test_exec_capabilityboundingset,
 721                 test_exec_cpuaffinity,
 722                 test_exec_environment,
 723                 test_exec_environmentfile,
 724                 test_exec_group,
 725                 test_exec_ignoresigpipe,
 726                 test_exec_inaccessiblepaths,
 727                 test_exec_ioschedulingclass,
 728                 test_exec_oomscoreadjust,
 729                 test_exec_passenvironment,
 730                 test_exec_personality,
 731                 test_exec_privatedevices,
 732                 test_exec_privatenetwork,
 733                 test_exec_privatetmp,
 734                 test_exec_protectkernelmodules,
 735                 test_exec_readonlypaths,
 736                 test_exec_readwritepaths,
 737                 test_exec_restrictnamespaces,
 738                 test_exec_runtimedirectory,
 739                 test_exec_standardinput,
 740                 test_exec_standardoutput,
 741                 test_exec_standardoutput_append,
 742                 test_exec_supplementarygroups,
 743                 test_exec_systemcallerrornumber,
 744                 test_exec_systemcallfilter,
 745                 test_exec_temporaryfilesystem,
 746                 test_exec_umask,
 747                 test_exec_unsetenvironment,
 748                 test_exec_user,
 749                 test_exec_workingdirectory,
 750                 NULL,
 751         };
 752         static const test_function_t system_tests[] = {
 753                 test_exec_dynamicuser,
 754                 test_exec_specifier,
 755                 test_exec_systemcallfilter_system,
 756                 NULL,
 757         };
 758         int r;
 759
 760         test_setup_logging(LOG_DEBUG);
 761
 762         (void) unsetenv("USER");
 763         (void) unsetenv("LOGNAME");
 764         (void) unsetenv("SHELL");
 765
 766         can_unshare = have_namespaces();
 767
 768         /* It is needed otherwise cgroup creation fails */
 769         if (getuid() != 0)
 770                 return log_tests_skipped("not root");
 771
 772         r = enter_cgroup_subroot();
 773         if (r == -ENOMEDIUM)
 774                 return log_tests_skipped("cgroupfs not available");
 775
 776         assert_se(runtime_dir = setup_fake_runtime_dir());
 777         test_execute_path = path_join(NULL, get_testdata_dir(), "test-execute");
 778         assert_se(set_unit_path(test_execute_path) >= 0);
 779
 780         /* Unset VAR1, VAR2 and VAR3 which are used in the PassEnvironment test
 781          * cases, otherwise (and if they are present in the environment),
 782          * `manager_default_environment` will copy them into the default
 783          * environment which is passed to each created job, which will make the
 784          * tests that expect those not to be present to fail.
 785          */
 786         assert_se(unsetenv("VAR1") == 0);
 787         assert_se(unsetenv("VAR2") == 0);
 788         assert_se(unsetenv("VAR3") == 0);
 789
 790         r = run_tests(UNIT_FILE_USER, user_tests);
 791         if (r != 0)
 792                 return r;
 793
 794         r = run_tests(UNIT_FILE_SYSTEM, system_tests);
 795         if (r != 0)
 796                 return r;
 797
 798 #if HAVE_SECCOMP
 799         /* The following tests are for 1beab8b0d0ff2d7d1436b52d4a0c3d56dc908962. */
 800         if (!is_seccomp_available()) {
 801                 log_notice("Seccomp not available, skipping unshare() filtered tests.");
 802                 return 0;
 803         }
 804
 805         assert_se(s = hashmap_new(NULL));
 806         r = seccomp_syscall_resolve_name("unshare");
 807         assert_se(r != __NR_SCMP_ERROR);
 808         assert_se(hashmap_put(s, UINT32_TO_PTR(r + 1), INT_TO_PTR(-1)) >= 0);
 809         assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, s, SCMP_ACT_ERRNO(EOPNOTSUPP), true) >= 0);
 810         assert_se(unshare(CLONE_NEWNS) < 0);
 811         assert_se(errno == EOPNOTSUPP);
 812
 813         can_unshare = false;
 814
 815         r = run_tests(UNIT_FILE_USER, user_tests);
 816         if (r != 0)
 817                 return r;
 818
 819         return run_tests(UNIT_FILE_SYSTEM, system_tests);
 820 #else
 821         return 0;
 822 #endif
 823 }