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 "missing_prctl.h"
  17 #include "mkdir.h"
  18 #include "path-util.h"
  19 #include "rm-rf.h"
  20 #if HAVE_SECCOMP
  21 #include "seccomp-util.h"
  22 #endif
  23 #include "service.h"
  24 #include "stat-util.h"
  25 #include "test-helper.h"
  26 #include "tests.h"
  27 #include "unit.h"
  28 #include "user-util.h"
  29 #include "util.h"
  30 #include "virt.h"
  31
  32 static bool can_unshare;
  33
  34 typedef void (*test_function_t)(Manager *m);
  35
  36 static void check(const char *func, Manager *m, Unit *unit, int status_expected, int code_expected) {
  37         Service *service = NULL;
  38         usec_t ts;
  39         usec_t timeout = 2 * USEC_PER_MINUTE;
  40
  41         assert_se(m);
  42         assert_se(unit);
  43
  44         service = SERVICE(unit);
  45         printf("%s\n", unit->id);
  46         exec_context_dump(&service->exec_context, stdout, "\t");
  47         ts = now(CLOCK_MONOTONIC);
  48         while (!IN_SET(service->state, SERVICE_DEAD, SERVICE_FAILED)) {
  49                 int r;
  50                 usec_t n;
  51
  52                 r = sd_event_run(m->event, 100 * USEC_PER_MSEC);
  53                 assert_se(r >= 0);
  54
  55                 n = now(CLOCK_MONOTONIC);
  56                 if (ts + timeout < n) {
  57                         log_error("Test timeout when testing %s", unit->id);
  58                         r = unit_kill(unit, KILL_ALL, SIGKILL, NULL);
  59                         if (r < 0)
  60                                 log_error_errno(r, "Failed to kill %s: %m", unit->id);
  61                         exit(EXIT_FAILURE);
  62                 }
  63         }
  64         exec_status_dump(&service->main_exec_status, stdout, "\t");
  65         if (service->main_exec_status.status != status_expected) {
  66                 log_error("%s: %s: exit status %d, expected %d",
  67                           func, unit->id,
  68                           service->main_exec_status.status, status_expected);
  69                 abort();
  70         }
  71         if (service->main_exec_status.code != code_expected) {
  72                 log_error("%s: %s: exit code %d, expected %d",
  73                           func, unit->id,
  74                           service->main_exec_status.code, code_expected);
  75                 abort();
  76         }
  77 }
  78
  79 static bool check_nobody_user_and_group(void) {
  80         static int cache = -1;
  81         struct passwd *p;
  82         struct group *g;
  83
  84         if (cache >= 0)
  85                 return !!cache;
  86
  87         if (!synthesize_nobody())
  88                 goto invalid;
  89
  90         p = getpwnam(NOBODY_USER_NAME);
  91         if (!p ||
  92             !streq(p->pw_name, NOBODY_USER_NAME) ||
  93             p->pw_uid != UID_NOBODY ||
  94             p->pw_gid != GID_NOBODY)
  95                 goto invalid;
  96
  97         p = getpwuid(UID_NOBODY);
  98         if (!p ||
  99             !streq(p->pw_name, NOBODY_USER_NAME) ||
 100             p->pw_uid != UID_NOBODY ||
 101             p->pw_gid != GID_NOBODY)
 102                 goto invalid;
 103
 104         g = getgrnam(NOBODY_GROUP_NAME);
 105         if (!g ||
 106             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
 107             g->gr_gid != GID_NOBODY)
 108                 goto invalid;
 109
 110         g = getgrgid(GID_NOBODY);
 111         if (!g ||
 112             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
 113             g->gr_gid != GID_NOBODY)
 114                 goto invalid;
 115
 116         cache = 1;
 117         return true;
 118
 119 invalid:
 120         cache = 0;
 121         return false;
 122 }
 123
 124 static bool check_user_has_group_with_same_name(const char *name) {
 125         struct passwd *p;
 126         struct group *g;
 127
 128         assert(name);
 129
 130         p = getpwnam(name);
 131         if (!p ||
 132             !streq(p->pw_name, name))
 133                 return false;
 134
 135         g = getgrgid(p->pw_gid);
 136         if (!g ||
 137             !streq(g->gr_name, name))
 138                 return false;
 139
 140         return true;
 141 }
 142
 143 static bool is_inaccessible_available(void) {
 144         const char *p;
 145
 146         FOREACH_STRING(p,
 147                 "/run/systemd/inaccessible/reg",
 148                 "/run/systemd/inaccessible/dir",
 149                 "/run/systemd/inaccessible/chr",
 150                 "/run/systemd/inaccessible/blk",
 151                 "/run/systemd/inaccessible/fifo",
 152                 "/run/systemd/inaccessible/sock"
 153         ) {
 154                 if (access(p, F_OK) < 0)
 155                         return false;
 156         }
 157
 158         return true;
 159 }
 160
 161 static void test(const char *func, Manager *m, const char *unit_name, int status_expected, int code_expected) {
 162         Unit *unit;
 163
 164         assert_se(unit_name);
 165
 166         assert_se(manager_load_startable_unit_or_warn(m, unit_name, NULL, &unit) >= 0);
 167         assert_se(unit_start(unit) >= 0);
 168         check(func, m, unit, status_expected, code_expected);
 169 }
 170
 171 static void test_exec_bindpaths(Manager *m) {
 172         assert_se(mkdir_p("/tmp/test-exec-bindpaths", 0755) >= 0);
 173         assert_se(mkdir_p("/tmp/test-exec-bindreadonlypaths", 0755) >= 0);
 174
 175         test(__func__, m, "exec-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 176
 177         (void) rm_rf("/tmp/test-exec-bindpaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 178         (void) rm_rf("/tmp/test-exec-bindreadonlypaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 179 }
 180
 181 static void test_exec_cpuaffinity(Manager *m) {
 182         _cleanup_cpu_free_ cpu_set_t *c = NULL;
 183         unsigned n;
 184
 185         assert_se(c = cpu_set_malloc(&n));
 186         assert_se(sched_getaffinity(0, CPU_ALLOC_SIZE(n), c) >= 0);
 187
 188         if (CPU_ISSET_S(0, CPU_ALLOC_SIZE(n), c) == 0) {
 189                 log_notice("Cannot use CPU 0, skipping %s", __func__);
 190                 return;
 191         }
 192
 193         test(__func__, m, "exec-cpuaffinity1.service", 0, CLD_EXITED);
 194         test(__func__, m, "exec-cpuaffinity2.service", 0, CLD_EXITED);
 195
 196         if (CPU_ISSET_S(1, CPU_ALLOC_SIZE(n), c) == 0 ||
 197             CPU_ISSET_S(2, CPU_ALLOC_SIZE(n), c) == 0) {
 198                 log_notice("Cannot use CPU 1 or 2, skipping remaining tests in %s", __func__);
 199                 return;
 200         }
 201
 202         test(__func__, m, "exec-cpuaffinity3.service", 0, CLD_EXITED);
 203 }
 204
 205 static void test_exec_workingdirectory(Manager *m) {
 206         assert_se(mkdir_p("/tmp/test-exec_workingdirectory", 0755) >= 0);
 207
 208         test(__func__, m, "exec-workingdirectory.service", 0, CLD_EXITED);
 209         test(__func__, m, "exec-workingdirectory-trailing-dot.service", 0, CLD_EXITED);
 210
 211         (void) rm_rf("/tmp/test-exec_workingdirectory", REMOVE_ROOT|REMOVE_PHYSICAL);
 212 }
 213
 214 static void test_exec_personality(Manager *m) {
 215 #if defined(__x86_64__)
 216         test(__func__, m, "exec-personality-x86-64.service", 0, CLD_EXITED);
 217
 218 #elif defined(__s390__)
 219         test(__func__, m, "exec-personality-s390.service", 0, CLD_EXITED);
 220
 221 #elif defined(__powerpc64__)
 222 #  if __BYTE_ORDER == __BIG_ENDIAN
 223         test(__func__, m, "exec-personality-ppc64.service", 0, CLD_EXITED);
 224 #  else
 225         test(__func__, m, "exec-personality-ppc64le.service", 0, CLD_EXITED);
 226 #  endif
 227
 228 #elif defined(__aarch64__)
 229         test(__func__, m, "exec-personality-aarch64.service", 0, CLD_EXITED);
 230
 231 #elif defined(__i386__)
 232         test(__func__, m, "exec-personality-x86.service", 0, CLD_EXITED);
 233 #else
 234         log_notice("Unknown personality, skipping %s", __func__);
 235 #endif
 236 }
 237
 238 static void test_exec_ignoresigpipe(Manager *m) {
 239         test(__func__, m, "exec-ignoresigpipe-yes.service", 0, CLD_EXITED);
 240         test(__func__, m, "exec-ignoresigpipe-no.service", SIGPIPE, CLD_KILLED);
 241 }
 242
 243 static void test_exec_privatetmp(Manager *m) {
 244         assert_se(touch("/tmp/test-exec_privatetmp") >= 0);
 245
 246         test(__func__, m, "exec-privatetmp-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 247         test(__func__, m, "exec-privatetmp-no.service", 0, CLD_EXITED);
 248
 249         unlink("/tmp/test-exec_privatetmp");
 250 }
 251
 252 static void test_exec_privatedevices(Manager *m) {
 253         int r;
 254
 255         if (detect_container() > 0) {
 256                 log_notice("Testing in container, skipping %s", __func__);
 257                 return;
 258         }
 259         if (!is_inaccessible_available()) {
 260                 log_notice("Testing without inaccessible, skipping %s", __func__);
 261                 return;
 262         }
 263
 264         test(__func__, m, "exec-privatedevices-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 265         test(__func__, m, "exec-privatedevices-no.service", 0, CLD_EXITED);
 266         test(__func__, m, "exec-privatedevices-disabled-by-prefix.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 267
 268         /* We use capsh to test if the capabilities are
 269          * properly set, so be sure that it exists */
 270         r = find_binary("capsh", NULL);
 271         if (r < 0) {
 272                 log_notice_errno(r, "Could not find capsh binary, skipping remaining tests in %s: %m", __func__);
 273                 return;
 274         }
 275
 276         test(__func__, m, "exec-privatedevices-yes-capability-mknod.service", 0, CLD_EXITED);
 277         test(__func__, m, "exec-privatedevices-no-capability-mknod.service", 0, CLD_EXITED);
 278         test(__func__, m, "exec-privatedevices-yes-capability-sys-rawio.service", 0, CLD_EXITED);
 279         test(__func__, m, "exec-privatedevices-no-capability-sys-rawio.service", 0, CLD_EXITED);
 280 }
 281
 282 static void test_exec_protecthome(Manager *m) {
 283         if (!can_unshare) {
 284                 log_notice("Cannot reliably unshare, skipping %s", __func__);
 285                 return;
 286         }
 287
 288         test(__func__, m, "exec-protecthome-tmpfs-vs-protectsystem-strict.service", 0, CLD_EXITED);
 289 }
 290
 291 static void test_exec_protectkernelmodules(Manager *m) {
 292         int r;
 293
 294         if (detect_container() > 0) {
 295                 log_notice("Testing in container, skipping %s", __func__);
 296                 return;
 297         }
 298         if (!is_inaccessible_available()) {
 299                 log_notice("Testing without inaccessible, skipping %s", __func__);
 300                 return;
 301         }
 302
 303         r = find_binary("capsh", NULL);
 304         if (r < 0) {
 305                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 306                 return;
 307         }
 308
 309         test(__func__, m, "exec-protectkernelmodules-no-capabilities.service", 0, CLD_EXITED);
 310         test(__func__, m, "exec-protectkernelmodules-yes-capabilities.service", 0, CLD_EXITED);
 311         test(__func__, m, "exec-protectkernelmodules-yes-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 312 }
 313
 314 static void test_exec_readonlypaths(Manager *m) {
 315
 316         test(__func__, m, "exec-readonlypaths-simple.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 317
 318         if (path_is_read_only_fs("/var") > 0) {
 319                 log_notice("Directory /var is readonly, skipping remaining tests in %s", __func__);
 320                 return;
 321         }
 322
 323         test(__func__, m, "exec-readonlypaths.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 324         test(__func__, m, "exec-readonlypaths-with-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 325         test(__func__, m, "exec-readonlypaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 326 }
 327
 328 static void test_exec_readwritepaths(Manager *m) {
 329
 330         if (path_is_read_only_fs("/") > 0) {
 331                 log_notice("Root directory is readonly, skipping %s", __func__);
 332                 return;
 333         }
 334
 335         test(__func__, m, "exec-readwritepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 336 }
 337
 338 static void test_exec_inaccessiblepaths(Manager *m) {
 339
 340         if (!is_inaccessible_available()) {
 341                 log_notice("Testing without inaccessible, skipping %s", __func__);
 342                 return;
 343         }
 344
 345         test(__func__, m, "exec-inaccessiblepaths-sys.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 346
 347         if (path_is_read_only_fs("/") > 0) {
 348                 log_notice("Root directory is readonly, skipping remaining tests in %s", __func__);
 349                 return;
 350         }
 351
 352         test(__func__, m, "exec-inaccessiblepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 353 }
 354
 355 static void test_exec_temporaryfilesystem(Manager *m) {
 356
 357         test(__func__, m, "exec-temporaryfilesystem-options.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 358         test(__func__, m, "exec-temporaryfilesystem-ro.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 359         test(__func__, m, "exec-temporaryfilesystem-rw.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 360         test(__func__, m, "exec-temporaryfilesystem-usr.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 361 }
 362
 363 static void test_exec_systemcallfilter(Manager *m) {
 364 #if HAVE_SECCOMP
 365         int r;
 366
 367         if (!is_seccomp_available()) {
 368                 log_notice("Seccomp not available, skipping %s", __func__);
 369                 return;
 370         }
 371
 372         test(__func__, m, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED);
 373         test(__func__, m, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED);
 374         test(__func__, m, "exec-systemcallfilter-failing.service", SIGSYS, CLD_KILLED);
 375         test(__func__, m, "exec-systemcallfilter-failing2.service", SIGSYS, CLD_KILLED);
 376
 377         r = find_binary("python3", NULL);
 378         if (r < 0) {
 379                 log_notice_errno(r, "Skipping remaining tests in %s, could not find python3 binary: %m", __func__);
 380                 return;
 381         }
 382
 383         test(__func__, m, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED);
 384         test(__func__, m, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED);
 385         test(__func__, m, "exec-systemcallfilter-with-errno-multi.service", errno_from_name("EILSEQ"), CLD_EXITED);
 386 #endif
 387 }
 388
 389 static void test_exec_systemcallerrornumber(Manager *m) {
 390 #if HAVE_SECCOMP
 391         int r;
 392
 393         if (!is_seccomp_available()) {
 394                 log_notice("Seccomp not available, skipping %s", __func__);
 395                 return;
 396         }
 397
 398         r = find_binary("python3", NULL);
 399         if (r < 0) {
 400                 log_notice_errno(r, "Skipping %s, could not find python3 binary: %m", __func__);
 401                 return;
 402         }
 403
 404         test(__func__, m, "exec-systemcallerrornumber-name.service", errno_from_name("EACCES"), CLD_EXITED);
 405         test(__func__, m, "exec-systemcallerrornumber-number.service", 255, CLD_EXITED);
 406 #endif
 407 }
 408
 409 static void test_exec_restrictnamespaces(Manager *m) {
 410 #if HAVE_SECCOMP
 411         if (!is_seccomp_available()) {
 412                 log_notice("Seccomp not available, skipping %s", __func__);
 413                 return;
 414         }
 415
 416         test(__func__, m, "exec-restrictnamespaces-no.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 417         test(__func__, m, "exec-restrictnamespaces-yes.service", 1, CLD_EXITED);
 418         test(__func__, m, "exec-restrictnamespaces-mnt.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 419         test(__func__, m, "exec-restrictnamespaces-mnt-blacklist.service", 1, CLD_EXITED);
 420         test(__func__, m, "exec-restrictnamespaces-merge-and.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 421         test(__func__, m, "exec-restrictnamespaces-merge-or.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 422         test(__func__, m, "exec-restrictnamespaces-merge-all.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 423 #endif
 424 }
 425
 426 static void test_exec_systemcallfilter_system(Manager *m) {
 427 #if HAVE_SECCOMP
 428         if (!is_seccomp_available()) {
 429                 log_notice("Seccomp not available, skipping %s", __func__);
 430                 return;
 431         }
 432
 433         test(__func__, m, "exec-systemcallfilter-system-user.service", 0, CLD_EXITED);
 434
 435         if (!check_nobody_user_and_group()) {
 436                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 437                 return;
 438         }
 439
 440         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 441                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 442                 return;
 443         }
 444
 445         test(__func__, m, "exec-systemcallfilter-system-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 446 #endif
 447 }
 448
 449 static void test_exec_user(Manager *m) {
 450         test(__func__, m, "exec-user.service", 0, CLD_EXITED);
 451
 452         if (!check_nobody_user_and_group()) {
 453                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 454                 return;
 455         }
 456
 457         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 458                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 459                 return;
 460         }
 461
 462         test(__func__, m, "exec-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 463 }
 464
 465 static void test_exec_group(Manager *m) {
 466         test(__func__, m, "exec-group.service", 0, CLD_EXITED);
 467
 468         if (!check_nobody_user_and_group()) {
 469                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 470                 return;
 471         }
 472
 473         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 474                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 475                 return;
 476         }
 477
 478         test(__func__, m, "exec-group-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 479 }
 480
 481 static void test_exec_supplementarygroups(Manager *m) {
 482         test(__func__, m, "exec-supplementarygroups.service", 0, CLD_EXITED);
 483         test(__func__, m, "exec-supplementarygroups-single-group.service", 0, CLD_EXITED);
 484         test(__func__, m, "exec-supplementarygroups-single-group-user.service", 0, CLD_EXITED);
 485         test(__func__, m, "exec-supplementarygroups-multiple-groups-default-group-user.service", 0, CLD_EXITED);
 486         test(__func__, m, "exec-supplementarygroups-multiple-groups-withgid.service", 0, CLD_EXITED);
 487         test(__func__, m, "exec-supplementarygroups-multiple-groups-withuid.service", 0, CLD_EXITED);
 488 }
 489
 490 static void test_exec_dynamicuser(Manager *m) {
 491
 492         test(__func__, m, "exec-dynamicuser-fixeduser.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 493         if (check_user_has_group_with_same_name("adm"))
 494                 test(__func__, m, "exec-dynamicuser-fixeduser-adm.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 495         if (check_user_has_group_with_same_name("games"))
 496                 test(__func__, m, "exec-dynamicuser-fixeduser-games.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 497         test(__func__, m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 498         test(__func__, m, "exec-dynamicuser-supplementarygroups.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 499         test(__func__, m, "exec-dynamicuser-statedir.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 500
 501         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 502         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 503         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 504         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 505
 506         test(__func__, m, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED);
 507         test(__func__, m, "exec-dynamicuser-statedir-migrate-step2.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 508
 509         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 510         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 511         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 512         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 513 }
 514
 515 static void test_exec_environment(Manager *m) {
 516         test(__func__, m, "exec-environment-no-substitute.service", 0, CLD_EXITED);
 517         test(__func__, m, "exec-environment.service", 0, CLD_EXITED);
 518         test(__func__, m, "exec-environment-multiple.service", 0, CLD_EXITED);
 519         test(__func__, m, "exec-environment-empty.service", 0, CLD_EXITED);
 520 }
 521
 522 static void test_exec_environmentfile(Manager *m) {
 523         static const char e[] =
 524                 "VAR1='word1 word2'\n"
 525                 "VAR2=word3 \n"
 526                 "# comment1\n"
 527                 "\n"
 528                 "; comment2\n"
 529                 " ; # comment3\n"
 530                 "line without an equal\n"
 531                 "VAR3='$word 5 6'\n"
 532                 "VAR4='new\nline'\n"
 533                 "VAR5=password\\with\\backslashes";
 534         int r;
 535
 536         r = write_string_file("/tmp/test-exec_environmentfile.conf", e, WRITE_STRING_FILE_CREATE);
 537         assert_se(r == 0);
 538
 539         test(__func__, m, "exec-environmentfile.service", 0, CLD_EXITED);
 540
 541         (void) unlink("/tmp/test-exec_environmentfile.conf");
 542 }
 543
 544 static void test_exec_passenvironment(Manager *m) {
 545         /* test-execute runs under MANAGER_USER which, by default, forwards all
 546          * variables present in the environment, but only those that are
 547          * present _at the time it is created_!
 548          *
 549          * So these PassEnvironment checks are still expected to work, since we
 550          * are ensuring the variables are not present at manager creation (they
 551          * are unset explicitly in main) and are only set here.
 552          *
 553          * This is still a good approximation of how a test for MANAGER_SYSTEM
 554          * would work.
 555          */
 556         assert_se(setenv("VAR1", "word1 word2", 1) == 0);
 557         assert_se(setenv("VAR2", "word3", 1) == 0);
 558         assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
 559         assert_se(setenv("VAR4", "new\nline", 1) == 0);
 560         assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
 561         test(__func__, m, "exec-passenvironment.service", 0, CLD_EXITED);
 562         test(__func__, m, "exec-passenvironment-repeated.service", 0, CLD_EXITED);
 563         test(__func__, m, "exec-passenvironment-empty.service", 0, CLD_EXITED);
 564         assert_se(unsetenv("VAR1") == 0);
 565         assert_se(unsetenv("VAR2") == 0);
 566         assert_se(unsetenv("VAR3") == 0);
 567         assert_se(unsetenv("VAR4") == 0);
 568         assert_se(unsetenv("VAR5") == 0);
 569         test(__func__, m, "exec-passenvironment-absent.service", 0, CLD_EXITED);
 570 }
 571
 572 static void test_exec_umask(Manager *m) {
 573         test(__func__, m, "exec-umask-default.service", 0, CLD_EXITED);
 574         test(__func__, m, "exec-umask-0177.service", 0, CLD_EXITED);
 575 }
 576
 577 static void test_exec_runtimedirectory(Manager *m) {
 578         test(__func__, m, "exec-runtimedirectory.service", 0, CLD_EXITED);
 579         test(__func__, m, "exec-runtimedirectory-mode.service", 0, CLD_EXITED);
 580         test(__func__, m, "exec-runtimedirectory-owner.service", 0, CLD_EXITED);
 581
 582         if (!check_nobody_user_and_group()) {
 583                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 584                 return;
 585         }
 586
 587         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 588                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 589                 return;
 590         }
 591
 592         test(__func__, m, "exec-runtimedirectory-owner-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 593 }
 594
 595 static void test_exec_capabilityboundingset(Manager *m) {
 596         int r;
 597
 598         r = find_binary("capsh", NULL);
 599         if (r < 0) {
 600                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 601                 return;
 602         }
 603
 604         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 605             have_effective_cap(CAP_FOWNER) <= 0 ||
 606             have_effective_cap(CAP_KILL) <= 0) {
 607                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 608                 return;
 609         }
 610
 611         test(__func__, m, "exec-capabilityboundingset-simple.service", 0, CLD_EXITED);
 612         test(__func__, m, "exec-capabilityboundingset-reset.service", 0, CLD_EXITED);
 613         test(__func__, m, "exec-capabilityboundingset-merge.service", 0, CLD_EXITED);
 614         test(__func__, m, "exec-capabilityboundingset-invert.service", 0, CLD_EXITED);
 615 }
 616
 617 static void test_exec_basic(Manager *m) {
 618         test(__func__, m, "exec-basic.service", 0, CLD_EXITED);
 619 }
 620
 621 static void test_exec_ambientcapabilities(Manager *m) {
 622         int r;
 623
 624         /* Check if the kernel has support for ambient capabilities. Run
 625          * the tests only if that's the case. Clearing all ambient
 626          * capabilities is fine, since we are expecting them to be unset
 627          * in the first place for the tests. */
 628         r = prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0);
 629         if (r < 0 && IN_SET(errno, EINVAL, EOPNOTSUPP, ENOSYS)) {
 630                 log_notice("Skipping %s, the kernel does not support ambient capabilities", __func__);
 631                 return;
 632         }
 633
 634         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 635             have_effective_cap(CAP_NET_RAW) <= 0) {
 636                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 637                 return;
 638         }
 639
 640         test(__func__, m, "exec-ambientcapabilities.service", 0, CLD_EXITED);
 641         test(__func__, m, "exec-ambientcapabilities-merge.service", 0, CLD_EXITED);
 642
 643         if (!check_nobody_user_and_group()) {
 644                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 645                 return;
 646         }
 647
 648         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 649                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 650                 return;
 651         }
 652
 653         test(__func__, m, "exec-ambientcapabilities-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 654         test(__func__, m, "exec-ambientcapabilities-merge-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 655 }
 656
 657 static void test_exec_privatenetwork(Manager *m) {
 658         int r;
 659
 660         r = find_binary("ip", NULL);
 661         if (r < 0) {
 662                 log_notice_errno(r, "Skipping %s, could not find ip binary: %m", __func__);
 663                 return;
 664         }
 665
 666         test(__func__, m, "exec-privatenetwork-yes.service", can_unshare ? 0 : EXIT_NETWORK, CLD_EXITED);
 667 }
 668
 669 static void test_exec_oomscoreadjust(Manager *m) {
 670         test(__func__, m, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED);
 671
 672         if (detect_container() > 0) {
 673                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 674                 return;
 675         }
 676         test(__func__, m, "exec-oomscoreadjust-negative.service", 0, CLD_EXITED);
 677 }
 678
 679 static void test_exec_ioschedulingclass(Manager *m) {
 680         test(__func__, m, "exec-ioschedulingclass-none.service", 0, CLD_EXITED);
 681         test(__func__, m, "exec-ioschedulingclass-idle.service", 0, CLD_EXITED);
 682         test(__func__, m, "exec-ioschedulingclass-best-effort.service", 0, CLD_EXITED);
 683
 684         if (detect_container() > 0) {
 685                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 686                 return;
 687         }
 688         test(__func__, m, "exec-ioschedulingclass-realtime.service", 0, CLD_EXITED);
 689 }
 690
 691 static void test_exec_unsetenvironment(Manager *m) {
 692         test(__func__, m, "exec-unsetenvironment.service", 0, CLD_EXITED);
 693 }
 694
 695 static void test_exec_specifier(Manager *m) {
 696         test(__func__, m, "exec-specifier.service", 0, CLD_EXITED);
 697         test(__func__, m, "exec-specifier@foo-bar.service", 0, CLD_EXITED);
 698         test(__func__, m, "exec-specifier-interpolation.service", 0, CLD_EXITED);
 699 }
 700
 701 static void test_exec_standardinput(Manager *m) {
 702         test(__func__, m, "exec-standardinput-data.service", 0, CLD_EXITED);
 703         test(__func__, m, "exec-standardinput-file.service", 0, CLD_EXITED);
 704 }
 705
 706 static void test_exec_standardoutput(Manager *m) {
 707         test(__func__, m, "exec-standardoutput-file.service", 0, CLD_EXITED);
 708 }
 709
 710 static void test_exec_standardoutput_append(Manager *m) {
 711         test(__func__, m, "exec-standardoutput-append.service", 0, CLD_EXITED);
 712 }
 713
 714 typedef struct test_entry {
 715         test_function_t f;
 716         const char *name;
 717 } test_entry;
 718
 719 #define entry(x) {x, #x}
 720
 721 static int run_tests(UnitFileScope scope, const test_entry tests[], char **patterns) {
 722         const test_entry *test = NULL;
 723         _cleanup_(manager_freep) Manager *m = NULL;
 724         int r;
 725
 726         assert_se(tests);
 727
 728         r = manager_new(scope, MANAGER_TEST_RUN_BASIC, &m);
 729         if (MANAGER_SKIP_TEST(r))
 730                 return log_tests_skipped_errno(r, "manager_new");
 731         assert_se(r >= 0);
 732         assert_se(manager_startup(m, NULL, NULL) >= 0);
 733
 734         for (test = tests; test && test->f; test++)
 735                 if (strv_fnmatch_or_empty(patterns, test->name, FNM_NOESCAPE))
 736                         test->f(m);
 737                 else
 738                         log_info("Skipping %s because it does not match any pattern.", test->name);
 739
 740         return 0;
 741 }
 742
 743
 744 int main(int argc, char *argv[]) {
 745         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
 746         _cleanup_free_ char *test_execute_path = NULL;
 747
 748         static const test_entry user_tests[] = {
 749                 entry(test_exec_basic),
 750                 entry(test_exec_ambientcapabilities),
 751                 entry(test_exec_bindpaths),
 752                 entry(test_exec_capabilityboundingset),
 753                 entry(test_exec_cpuaffinity),
 754                 entry(test_exec_environment),
 755                 entry(test_exec_environmentfile),
 756                 entry(test_exec_group),
 757                 entry(test_exec_ignoresigpipe),
 758                 entry(test_exec_inaccessiblepaths),
 759                 entry(test_exec_ioschedulingclass),
 760                 entry(test_exec_oomscoreadjust),
 761                 entry(test_exec_passenvironment),
 762                 entry(test_exec_personality),
 763                 entry(test_exec_privatedevices),
 764                 entry(test_exec_privatenetwork),
 765                 entry(test_exec_privatetmp),
 766                 entry(test_exec_protecthome),
 767                 entry(test_exec_protectkernelmodules),
 768                 entry(test_exec_readonlypaths),
 769                 entry(test_exec_readwritepaths),
 770                 entry(test_exec_restrictnamespaces),
 771                 entry(test_exec_runtimedirectory),
 772                 entry(test_exec_standardinput),
 773                 entry(test_exec_standardoutput),
 774                 entry(test_exec_standardoutput_append),
 775                 entry(test_exec_supplementarygroups),
 776                 entry(test_exec_systemcallerrornumber),
 777                 entry(test_exec_systemcallfilter),
 778                 entry(test_exec_temporaryfilesystem),
 779                 entry(test_exec_umask),
 780                 entry(test_exec_unsetenvironment),
 781                 entry(test_exec_user),
 782                 entry(test_exec_workingdirectory),
 783                 {},
 784         };
 785         static const test_entry system_tests[] = {
 786                 entry(test_exec_dynamicuser),
 787                 entry(test_exec_specifier),
 788                 entry(test_exec_systemcallfilter_system),
 789                 {},
 790         };
 791         int r;
 792
 793         test_setup_logging(LOG_DEBUG);
 794
 795 #if HAS_FEATURE_ADDRESS_SANITIZER
 796         if (is_run_on_travis_ci()) {
 797                 log_notice("Running on TravisCI under ASan, skipping, see https://github.com/systemd/systemd/issues/10696");
 798                 return EXIT_TEST_SKIP;
 799         }
 800 #endif
 801
 802         (void) unsetenv("USER");
 803         (void) unsetenv("LOGNAME");
 804         (void) unsetenv("SHELL");
 805         (void) unsetenv("HOME");
 806
 807         can_unshare = have_namespaces();
 808
 809         /* It is needed otherwise cgroup creation fails */
 810         if (getuid() != 0)
 811                 return log_tests_skipped("not root");
 812
 813         r = enter_cgroup_subroot();
 814         if (r == -ENOMEDIUM)
 815                 return log_tests_skipped("cgroupfs not available");
 816
 817         assert_se(runtime_dir = setup_fake_runtime_dir());
 818         test_execute_path = path_join(get_testdata_dir(), "test-execute");
 819         assert_se(set_unit_path(test_execute_path) >= 0);
 820
 821         /* Unset VAR1, VAR2 and VAR3 which are used in the PassEnvironment test
 822          * cases, otherwise (and if they are present in the environment),
 823          * `manager_default_environment` will copy them into the default
 824          * environment which is passed to each created job, which will make the
 825          * tests that expect those not to be present to fail.
 826          */
 827         assert_se(unsetenv("VAR1") == 0);
 828         assert_se(unsetenv("VAR2") == 0);
 829         assert_se(unsetenv("VAR3") == 0);
 830
 831         r = run_tests(UNIT_FILE_USER, user_tests, argv + 1);
 832         if (r != 0)
 833                 return r;
 834
 835         r = run_tests(UNIT_FILE_SYSTEM, system_tests, argv + 1);
 836         if (r != 0)
 837                 return r;
 838
 839 #if HAVE_SECCOMP
 840         /* The following tests are for 1beab8b0d0ff2d7d1436b52d4a0c3d56dc908962. */
 841         if (!is_seccomp_available()) {
 842                 log_notice("Seccomp not available, skipping unshare() filtered tests.");
 843                 return 0;
 844         }
 845
 846         _cleanup_hashmap_free_ Hashmap *s = NULL;
 847         assert_se(s = hashmap_new(NULL));
 848         r = seccomp_syscall_resolve_name("unshare");
 849         assert_se(r != __NR_SCMP_ERROR);
 850         assert_se(hashmap_put(s, UINT32_TO_PTR(r + 1), INT_TO_PTR(-1)) >= 0);
 851         assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, s, SCMP_ACT_ERRNO(EOPNOTSUPP), true) >= 0);
 852         assert_se(unshare(CLONE_NEWNS) < 0);
 853         assert_se(errno == EOPNOTSUPP);
 854
 855         can_unshare = false;
 856
 857         r = run_tests(UNIT_FILE_USER, user_tests, argv + 1);
 858         if (r != 0)
 859                 return r;
 860
 861         return run_tests(UNIT_FILE_SYSTEM, system_tests, argv + 1);
 862 #else
 863         return 0;
 864 #endif
 865 }