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 int cld_dumped_to_killed(int code) {
  37         /* Depending on the system, seccomp version, … some signals might result in dumping, others in plain
  38          * killing. Let's ignore the difference here, and map both cases to CLD_KILLED */
  39         return code == CLD_DUMPED ? CLD_KILLED : code;
  40 }
  41
  42 static void check(const char *func, Manager *m, Unit *unit, int status_expected, int code_expected) {
  43         Service *service = NULL;
  44         usec_t ts;
  45         usec_t timeout = 2 * USEC_PER_MINUTE;
  46
  47         assert_se(m);
  48         assert_se(unit);
  49
  50         service = SERVICE(unit);
  51         printf("%s\n", unit->id);
  52         exec_context_dump(&service->exec_context, stdout, "\t");
  53         ts = now(CLOCK_MONOTONIC);
  54         while (!IN_SET(service->state, SERVICE_DEAD, SERVICE_FAILED)) {
  55                 int r;
  56                 usec_t n;
  57
  58                 r = sd_event_run(m->event, 100 * USEC_PER_MSEC);
  59                 assert_se(r >= 0);
  60
  61                 n = now(CLOCK_MONOTONIC);
  62                 if (ts + timeout < n) {
  63                         log_error("Test timeout when testing %s", unit->id);
  64                         r = unit_kill(unit, KILL_ALL, SIGKILL, NULL);
  65                         if (r < 0)
  66                                 log_error_errno(r, "Failed to kill %s: %m", unit->id);
  67                         exit(EXIT_FAILURE);
  68                 }
  69         }
  70         exec_status_dump(&service->main_exec_status, stdout, "\t");
  71
  72         if (cld_dumped_to_killed(service->main_exec_status.code) != cld_dumped_to_killed(code_expected)) {
  73                 log_error("%s: %s: exit code %d, expected %d",
  74                           func, unit->id,
  75                           service->main_exec_status.code, code_expected);
  76                 abort();
  77         }
  78
  79         if (service->main_exec_status.status != status_expected) {
  80                 log_error("%s: %s: exit status %d, expected %d",
  81                           func, unit->id,
  82                           service->main_exec_status.status, status_expected);
  83                 abort();
  84         }
  85 }
  86
  87 static bool check_nobody_user_and_group(void) {
  88         static int cache = -1;
  89         struct passwd *p;
  90         struct group *g;
  91
  92         if (cache >= 0)
  93                 return !!cache;
  94
  95         if (!synthesize_nobody())
  96                 goto invalid;
  97
  98         p = getpwnam(NOBODY_USER_NAME);
  99         if (!p ||
 100             !streq(p->pw_name, NOBODY_USER_NAME) ||
 101             p->pw_uid != UID_NOBODY ||
 102             p->pw_gid != GID_NOBODY)
 103                 goto invalid;
 104
 105         p = getpwuid(UID_NOBODY);
 106         if (!p ||
 107             !streq(p->pw_name, NOBODY_USER_NAME) ||
 108             p->pw_uid != UID_NOBODY ||
 109             p->pw_gid != GID_NOBODY)
 110                 goto invalid;
 111
 112         g = getgrnam(NOBODY_GROUP_NAME);
 113         if (!g ||
 114             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
 115             g->gr_gid != GID_NOBODY)
 116                 goto invalid;
 117
 118         g = getgrgid(GID_NOBODY);
 119         if (!g ||
 120             !streq(g->gr_name, NOBODY_GROUP_NAME) ||
 121             g->gr_gid != GID_NOBODY)
 122                 goto invalid;
 123
 124         cache = 1;
 125         return true;
 126
 127 invalid:
 128         cache = 0;
 129         return false;
 130 }
 131
 132 static bool check_user_has_group_with_same_name(const char *name) {
 133         struct passwd *p;
 134         struct group *g;
 135
 136         assert(name);
 137
 138         p = getpwnam(name);
 139         if (!p ||
 140             !streq(p->pw_name, name))
 141                 return false;
 142
 143         g = getgrgid(p->pw_gid);
 144         if (!g ||
 145             !streq(g->gr_name, name))
 146                 return false;
 147
 148         return true;
 149 }
 150
 151 static bool is_inaccessible_available(void) {
 152         const char *p;
 153
 154         FOREACH_STRING(p,
 155                 "/run/systemd/inaccessible/reg",
 156                 "/run/systemd/inaccessible/dir",
 157                 "/run/systemd/inaccessible/chr",
 158                 "/run/systemd/inaccessible/blk",
 159                 "/run/systemd/inaccessible/fifo",
 160                 "/run/systemd/inaccessible/sock"
 161         ) {
 162                 if (access(p, F_OK) < 0)
 163                         return false;
 164         }
 165
 166         return true;
 167 }
 168
 169 static void test(const char *func, Manager *m, const char *unit_name, int status_expected, int code_expected) {
 170         Unit *unit;
 171
 172         assert_se(unit_name);
 173
 174         assert_se(manager_load_startable_unit_or_warn(m, unit_name, NULL, &unit) >= 0);
 175         assert_se(unit_start(unit) >= 0);
 176         check(func, m, unit, status_expected, code_expected);
 177 }
 178
 179 static void test_exec_bindpaths(Manager *m) {
 180         assert_se(mkdir_p("/tmp/test-exec-bindpaths", 0755) >= 0);
 181         assert_se(mkdir_p("/tmp/test-exec-bindreadonlypaths", 0755) >= 0);
 182
 183         test(__func__, m, "exec-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 184
 185         (void) rm_rf("/tmp/test-exec-bindpaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 186         (void) rm_rf("/tmp/test-exec-bindreadonlypaths", REMOVE_ROOT|REMOVE_PHYSICAL);
 187 }
 188
 189 static void test_exec_cpuaffinity(Manager *m) {
 190         _cleanup_cpu_free_ cpu_set_t *c = NULL;
 191         unsigned n;
 192
 193         assert_se(c = cpu_set_malloc(&n));
 194         assert_se(sched_getaffinity(0, CPU_ALLOC_SIZE(n), c) >= 0);
 195
 196         if (CPU_ISSET_S(0, CPU_ALLOC_SIZE(n), c) == 0) {
 197                 log_notice("Cannot use CPU 0, skipping %s", __func__);
 198                 return;
 199         }
 200
 201         test(__func__, m, "exec-cpuaffinity1.service", 0, CLD_EXITED);
 202         test(__func__, m, "exec-cpuaffinity2.service", 0, CLD_EXITED);
 203
 204         if (CPU_ISSET_S(1, CPU_ALLOC_SIZE(n), c) == 0 ||
 205             CPU_ISSET_S(2, CPU_ALLOC_SIZE(n), c) == 0) {
 206                 log_notice("Cannot use CPU 1 or 2, skipping remaining tests in %s", __func__);
 207                 return;
 208         }
 209
 210         test(__func__, m, "exec-cpuaffinity3.service", 0, CLD_EXITED);
 211 }
 212
 213 static void test_exec_workingdirectory(Manager *m) {
 214         assert_se(mkdir_p("/tmp/test-exec_workingdirectory", 0755) >= 0);
 215
 216         test(__func__, m, "exec-workingdirectory.service", 0, CLD_EXITED);
 217         test(__func__, m, "exec-workingdirectory-trailing-dot.service", 0, CLD_EXITED);
 218
 219         (void) rm_rf("/tmp/test-exec_workingdirectory", REMOVE_ROOT|REMOVE_PHYSICAL);
 220 }
 221
 222 static void test_exec_personality(Manager *m) {
 223 #if defined(__x86_64__)
 224         test(__func__, m, "exec-personality-x86-64.service", 0, CLD_EXITED);
 225
 226 #elif defined(__s390__)
 227         test(__func__, m, "exec-personality-s390.service", 0, CLD_EXITED);
 228
 229 #elif defined(__powerpc64__)
 230 #  if __BYTE_ORDER == __BIG_ENDIAN
 231         test(__func__, m, "exec-personality-ppc64.service", 0, CLD_EXITED);
 232 #  else
 233         test(__func__, m, "exec-personality-ppc64le.service", 0, CLD_EXITED);
 234 #  endif
 235
 236 #elif defined(__aarch64__)
 237         test(__func__, m, "exec-personality-aarch64.service", 0, CLD_EXITED);
 238
 239 #elif defined(__i386__)
 240         test(__func__, m, "exec-personality-x86.service", 0, CLD_EXITED);
 241 #else
 242         log_notice("Unknown personality, skipping %s", __func__);
 243 #endif
 244 }
 245
 246 static void test_exec_ignoresigpipe(Manager *m) {
 247         test(__func__, m, "exec-ignoresigpipe-yes.service", 0, CLD_EXITED);
 248         test(__func__, m, "exec-ignoresigpipe-no.service", SIGPIPE, CLD_KILLED);
 249 }
 250
 251 static void test_exec_privatetmp(Manager *m) {
 252         assert_se(touch("/tmp/test-exec_privatetmp") >= 0);
 253
 254         test(__func__, m, "exec-privatetmp-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 255         test(__func__, m, "exec-privatetmp-no.service", 0, CLD_EXITED);
 256
 257         unlink("/tmp/test-exec_privatetmp");
 258 }
 259
 260 static void test_exec_privatedevices(Manager *m) {
 261         int r;
 262
 263         if (detect_container() > 0) {
 264                 log_notice("Testing in container, skipping %s", __func__);
 265                 return;
 266         }
 267         if (!is_inaccessible_available()) {
 268                 log_notice("Testing without inaccessible, skipping %s", __func__);
 269                 return;
 270         }
 271
 272         test(__func__, m, "exec-privatedevices-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 273         test(__func__, m, "exec-privatedevices-no.service", 0, CLD_EXITED);
 274         test(__func__, m, "exec-privatedevices-disabled-by-prefix.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 275
 276         /* We use capsh to test if the capabilities are
 277          * properly set, so be sure that it exists */
 278         r = find_binary("capsh", NULL);
 279         if (r < 0) {
 280                 log_notice_errno(r, "Could not find capsh binary, skipping remaining tests in %s: %m", __func__);
 281                 return;
 282         }
 283
 284         test(__func__, m, "exec-privatedevices-yes-capability-mknod.service", 0, CLD_EXITED);
 285         test(__func__, m, "exec-privatedevices-no-capability-mknod.service", 0, CLD_EXITED);
 286         test(__func__, m, "exec-privatedevices-yes-capability-sys-rawio.service", 0, CLD_EXITED);
 287         test(__func__, m, "exec-privatedevices-no-capability-sys-rawio.service", 0, CLD_EXITED);
 288 }
 289
 290 static void test_exec_protecthome(Manager *m) {
 291         if (!can_unshare) {
 292                 log_notice("Cannot reliably unshare, skipping %s", __func__);
 293                 return;
 294         }
 295
 296         test(__func__, m, "exec-protecthome-tmpfs-vs-protectsystem-strict.service", 0, CLD_EXITED);
 297 }
 298
 299 static void test_exec_protectkernelmodules(Manager *m) {
 300         int r;
 301
 302         if (detect_container() > 0) {
 303                 log_notice("Testing in container, skipping %s", __func__);
 304                 return;
 305         }
 306         if (!is_inaccessible_available()) {
 307                 log_notice("Testing without inaccessible, skipping %s", __func__);
 308                 return;
 309         }
 310
 311         r = find_binary("capsh", NULL);
 312         if (r < 0) {
 313                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 314                 return;
 315         }
 316
 317         test(__func__, m, "exec-protectkernelmodules-no-capabilities.service", 0, CLD_EXITED);
 318         test(__func__, m, "exec-protectkernelmodules-yes-capabilities.service", 0, CLD_EXITED);
 319         test(__func__, m, "exec-protectkernelmodules-yes-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 320 }
 321
 322 static void test_exec_readonlypaths(Manager *m) {
 323
 324         test(__func__, m, "exec-readonlypaths-simple.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 325
 326         if (path_is_read_only_fs("/var") > 0) {
 327                 log_notice("Directory /var is readonly, skipping remaining tests in %s", __func__);
 328                 return;
 329         }
 330
 331         test(__func__, m, "exec-readonlypaths.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 332         test(__func__, m, "exec-readonlypaths-with-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 333         test(__func__, m, "exec-readonlypaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 334 }
 335
 336 static void test_exec_readwritepaths(Manager *m) {
 337
 338         if (path_is_read_only_fs("/") > 0) {
 339                 log_notice("Root directory is readonly, skipping %s", __func__);
 340                 return;
 341         }
 342
 343         test(__func__, m, "exec-readwritepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 344 }
 345
 346 static void test_exec_inaccessiblepaths(Manager *m) {
 347
 348         if (!is_inaccessible_available()) {
 349                 log_notice("Testing without inaccessible, skipping %s", __func__);
 350                 return;
 351         }
 352
 353         test(__func__, m, "exec-inaccessiblepaths-sys.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 354
 355         if (path_is_read_only_fs("/") > 0) {
 356                 log_notice("Root directory is readonly, skipping remaining tests in %s", __func__);
 357                 return;
 358         }
 359
 360         test(__func__, m, "exec-inaccessiblepaths-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 361 }
 362
 363 static void test_exec_temporaryfilesystem(Manager *m) {
 364
 365         test(__func__, m, "exec-temporaryfilesystem-options.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 366         test(__func__, m, "exec-temporaryfilesystem-ro.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 367         test(__func__, m, "exec-temporaryfilesystem-rw.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 368         test(__func__, m, "exec-temporaryfilesystem-usr.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 369 }
 370
 371 static void test_exec_systemcallfilter(Manager *m) {
 372 #if HAVE_SECCOMP
 373         int r;
 374
 375         if (!is_seccomp_available()) {
 376                 log_notice("Seccomp not available, skipping %s", __func__);
 377                 return;
 378         }
 379
 380         test(__func__, m, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED);
 381         test(__func__, m, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED);
 382         test(__func__, m, "exec-systemcallfilter-failing.service", SIGSYS, CLD_KILLED);
 383         test(__func__, m, "exec-systemcallfilter-failing2.service", SIGSYS, CLD_KILLED);
 384
 385         r = find_binary("python3", NULL);
 386         if (r < 0) {
 387                 log_notice_errno(r, "Skipping remaining tests in %s, could not find python3 binary: %m", __func__);
 388                 return;
 389         }
 390
 391         test(__func__, m, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED);
 392         test(__func__, m, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED);
 393         test(__func__, m, "exec-systemcallfilter-with-errno-multi.service", errno_from_name("EILSEQ"), CLD_EXITED);
 394 #endif
 395 }
 396
 397 static void test_exec_systemcallerrornumber(Manager *m) {
 398 #if HAVE_SECCOMP
 399         int r;
 400
 401         if (!is_seccomp_available()) {
 402                 log_notice("Seccomp not available, skipping %s", __func__);
 403                 return;
 404         }
 405
 406         r = find_binary("python3", NULL);
 407         if (r < 0) {
 408                 log_notice_errno(r, "Skipping %s, could not find python3 binary: %m", __func__);
 409                 return;
 410         }
 411
 412         test(__func__, m, "exec-systemcallerrornumber-name.service", errno_from_name("EACCES"), CLD_EXITED);
 413         test(__func__, m, "exec-systemcallerrornumber-number.service", 255, CLD_EXITED);
 414 #endif
 415 }
 416
 417 static void test_exec_restrictnamespaces(Manager *m) {
 418 #if HAVE_SECCOMP
 419         if (!is_seccomp_available()) {
 420                 log_notice("Seccomp not available, skipping %s", __func__);
 421                 return;
 422         }
 423
 424         test(__func__, m, "exec-restrictnamespaces-no.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 425         test(__func__, m, "exec-restrictnamespaces-yes.service", 1, CLD_EXITED);
 426         test(__func__, m, "exec-restrictnamespaces-mnt.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 427         test(__func__, m, "exec-restrictnamespaces-mnt-blacklist.service", 1, CLD_EXITED);
 428         test(__func__, m, "exec-restrictnamespaces-merge-and.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 429         test(__func__, m, "exec-restrictnamespaces-merge-or.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 430         test(__func__, m, "exec-restrictnamespaces-merge-all.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
 431 #endif
 432 }
 433
 434 static void test_exec_systemcallfilter_system(Manager *m) {
 435 #if HAVE_SECCOMP
 436         if (!is_seccomp_available()) {
 437                 log_notice("Seccomp not available, skipping %s", __func__);
 438                 return;
 439         }
 440
 441         test(__func__, m, "exec-systemcallfilter-system-user.service", 0, CLD_EXITED);
 442
 443         if (!check_nobody_user_and_group()) {
 444                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 445                 return;
 446         }
 447
 448         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 449                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 450                 return;
 451         }
 452
 453         test(__func__, m, "exec-systemcallfilter-system-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 454 #endif
 455 }
 456
 457 static void test_exec_user(Manager *m) {
 458         test(__func__, m, "exec-user.service", 0, CLD_EXITED);
 459
 460         if (!check_nobody_user_and_group()) {
 461                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 462                 return;
 463         }
 464
 465         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 466                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 467                 return;
 468         }
 469
 470         test(__func__, m, "exec-user-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 471 }
 472
 473 static void test_exec_group(Manager *m) {
 474         test(__func__, m, "exec-group.service", 0, CLD_EXITED);
 475
 476         if (!check_nobody_user_and_group()) {
 477                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 478                 return;
 479         }
 480
 481         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 482                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 483                 return;
 484         }
 485
 486         test(__func__, m, "exec-group-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 487 }
 488
 489 static void test_exec_supplementarygroups(Manager *m) {
 490         test(__func__, m, "exec-supplementarygroups.service", 0, CLD_EXITED);
 491         test(__func__, m, "exec-supplementarygroups-single-group.service", 0, CLD_EXITED);
 492         test(__func__, m, "exec-supplementarygroups-single-group-user.service", 0, CLD_EXITED);
 493         test(__func__, m, "exec-supplementarygroups-multiple-groups-default-group-user.service", 0, CLD_EXITED);
 494         test(__func__, m, "exec-supplementarygroups-multiple-groups-withgid.service", 0, CLD_EXITED);
 495         test(__func__, m, "exec-supplementarygroups-multiple-groups-withuid.service", 0, CLD_EXITED);
 496 }
 497
 498 static void test_exec_dynamicuser(Manager *m) {
 499
 500         test(__func__, m, "exec-dynamicuser-fixeduser.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 501         if (check_user_has_group_with_same_name("adm"))
 502                 test(__func__, m, "exec-dynamicuser-fixeduser-adm.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 503         if (check_user_has_group_with_same_name("games"))
 504                 test(__func__, m, "exec-dynamicuser-fixeduser-games.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 505         test(__func__, m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 506         test(__func__, m, "exec-dynamicuser-supplementarygroups.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 507         test(__func__, m, "exec-dynamicuser-statedir.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         test(__func__, m, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED);
 515         test(__func__, m, "exec-dynamicuser-statedir-migrate-step2.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
 516
 517         (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 518         (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 519         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
 520         (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
 521 }
 522
 523 static void test_exec_environment(Manager *m) {
 524         test(__func__, m, "exec-environment-no-substitute.service", 0, CLD_EXITED);
 525         test(__func__, m, "exec-environment.service", 0, CLD_EXITED);
 526         test(__func__, m, "exec-environment-multiple.service", 0, CLD_EXITED);
 527         test(__func__, m, "exec-environment-empty.service", 0, CLD_EXITED);
 528 }
 529
 530 static void test_exec_environmentfile(Manager *m) {
 531         static const char e[] =
 532                 "VAR1='word1 word2'\n"
 533                 "VAR2=word3 \n"
 534                 "# comment1\n"
 535                 "\n"
 536                 "; comment2\n"
 537                 " ; # comment3\n"
 538                 "line without an equal\n"
 539                 "VAR3='$word 5 6'\n"
 540                 "VAR4='new\nline'\n"
 541                 "VAR5=password\\with\\backslashes";
 542         int r;
 543
 544         r = write_string_file("/tmp/test-exec_environmentfile.conf", e, WRITE_STRING_FILE_CREATE);
 545         assert_se(r == 0);
 546
 547         test(__func__, m, "exec-environmentfile.service", 0, CLD_EXITED);
 548
 549         (void) unlink("/tmp/test-exec_environmentfile.conf");
 550 }
 551
 552 static void test_exec_passenvironment(Manager *m) {
 553         /* test-execute runs under MANAGER_USER which, by default, forwards all
 554          * variables present in the environment, but only those that are
 555          * present _at the time it is created_!
 556          *
 557          * So these PassEnvironment checks are still expected to work, since we
 558          * are ensuring the variables are not present at manager creation (they
 559          * are unset explicitly in main) and are only set here.
 560          *
 561          * This is still a good approximation of how a test for MANAGER_SYSTEM
 562          * would work.
 563          */
 564         assert_se(setenv("VAR1", "word1 word2", 1) == 0);
 565         assert_se(setenv("VAR2", "word3", 1) == 0);
 566         assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
 567         assert_se(setenv("VAR4", "new\nline", 1) == 0);
 568         assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
 569         test(__func__, m, "exec-passenvironment.service", 0, CLD_EXITED);
 570         test(__func__, m, "exec-passenvironment-repeated.service", 0, CLD_EXITED);
 571         test(__func__, m, "exec-passenvironment-empty.service", 0, CLD_EXITED);
 572         assert_se(unsetenv("VAR1") == 0);
 573         assert_se(unsetenv("VAR2") == 0);
 574         assert_se(unsetenv("VAR3") == 0);
 575         assert_se(unsetenv("VAR4") == 0);
 576         assert_se(unsetenv("VAR5") == 0);
 577         test(__func__, m, "exec-passenvironment-absent.service", 0, CLD_EXITED);
 578 }
 579
 580 static void test_exec_umask(Manager *m) {
 581         test(__func__, m, "exec-umask-default.service", 0, CLD_EXITED);
 582         test(__func__, m, "exec-umask-0177.service", 0, CLD_EXITED);
 583 }
 584
 585 static void test_exec_runtimedirectory(Manager *m) {
 586         test(__func__, m, "exec-runtimedirectory.service", 0, CLD_EXITED);
 587         test(__func__, m, "exec-runtimedirectory-mode.service", 0, CLD_EXITED);
 588         test(__func__, m, "exec-runtimedirectory-owner.service", 0, CLD_EXITED);
 589
 590         if (!check_nobody_user_and_group()) {
 591                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 592                 return;
 593         }
 594
 595         if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
 596                 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
 597                 return;
 598         }
 599
 600         test(__func__, m, "exec-runtimedirectory-owner-" NOBODY_GROUP_NAME ".service", 0, CLD_EXITED);
 601 }
 602
 603 static void test_exec_capabilityboundingset(Manager *m) {
 604         int r;
 605
 606         r = find_binary("capsh", NULL);
 607         if (r < 0) {
 608                 log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
 609                 return;
 610         }
 611
 612         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 613             have_effective_cap(CAP_FOWNER) <= 0 ||
 614             have_effective_cap(CAP_KILL) <= 0) {
 615                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 616                 return;
 617         }
 618
 619         test(__func__, m, "exec-capabilityboundingset-simple.service", 0, CLD_EXITED);
 620         test(__func__, m, "exec-capabilityboundingset-reset.service", 0, CLD_EXITED);
 621         test(__func__, m, "exec-capabilityboundingset-merge.service", 0, CLD_EXITED);
 622         test(__func__, m, "exec-capabilityboundingset-invert.service", 0, CLD_EXITED);
 623 }
 624
 625 static void test_exec_basic(Manager *m) {
 626         test(__func__, m, "exec-basic.service", 0, CLD_EXITED);
 627 }
 628
 629 static void test_exec_ambientcapabilities(Manager *m) {
 630         int r;
 631
 632         /* Check if the kernel has support for ambient capabilities. Run
 633          * the tests only if that's the case. Clearing all ambient
 634          * capabilities is fine, since we are expecting them to be unset
 635          * in the first place for the tests. */
 636         r = prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0);
 637         if (r < 0 && IN_SET(errno, EINVAL, EOPNOTSUPP, ENOSYS)) {
 638                 log_notice("Skipping %s, the kernel does not support ambient capabilities", __func__);
 639                 return;
 640         }
 641
 642         if (have_effective_cap(CAP_CHOWN) <= 0 ||
 643             have_effective_cap(CAP_NET_RAW) <= 0) {
 644                 log_notice("Skipping %s, this process does not have enough capabilities", __func__);
 645                 return;
 646         }
 647
 648         test(__func__, m, "exec-ambientcapabilities.service", 0, CLD_EXITED);
 649         test(__func__, m, "exec-ambientcapabilities-merge.service", 0, CLD_EXITED);
 650
 651         if (!check_nobody_user_and_group()) {
 652                 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
 653                 return;
 654         }
 655
 656         if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
 657                 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
 658                 return;
 659         }
 660
 661         test(__func__, m, "exec-ambientcapabilities-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 662         test(__func__, m, "exec-ambientcapabilities-merge-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
 663 }
 664
 665 static void test_exec_privatenetwork(Manager *m) {
 666         int r;
 667
 668         r = find_binary("ip", NULL);
 669         if (r < 0) {
 670                 log_notice_errno(r, "Skipping %s, could not find ip binary: %m", __func__);
 671                 return;
 672         }
 673
 674         test(__func__, m, "exec-privatenetwork-yes.service", can_unshare ? 0 : EXIT_NETWORK, CLD_EXITED);
 675 }
 676
 677 static void test_exec_oomscoreadjust(Manager *m) {
 678         test(__func__, m, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED);
 679
 680         if (detect_container() > 0) {
 681                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 682                 return;
 683         }
 684         test(__func__, m, "exec-oomscoreadjust-negative.service", 0, CLD_EXITED);
 685 }
 686
 687 static void test_exec_ioschedulingclass(Manager *m) {
 688         test(__func__, m, "exec-ioschedulingclass-none.service", 0, CLD_EXITED);
 689         test(__func__, m, "exec-ioschedulingclass-idle.service", 0, CLD_EXITED);
 690         test(__func__, m, "exec-ioschedulingclass-best-effort.service", 0, CLD_EXITED);
 691
 692         if (detect_container() > 0) {
 693                 log_notice("Testing in container, skipping remaining tests in %s", __func__);
 694                 return;
 695         }
 696         test(__func__, m, "exec-ioschedulingclass-realtime.service", 0, CLD_EXITED);
 697 }
 698
 699 static void test_exec_unsetenvironment(Manager *m) {
 700         test(__func__, m, "exec-unsetenvironment.service", 0, CLD_EXITED);
 701 }
 702
 703 static void test_exec_specifier(Manager *m) {
 704         test(__func__, m, "exec-specifier.service", 0, CLD_EXITED);
 705         test(__func__, m, "exec-specifier@foo-bar.service", 0, CLD_EXITED);
 706         test(__func__, m, "exec-specifier-interpolation.service", 0, CLD_EXITED);
 707 }
 708
 709 static void test_exec_standardinput(Manager *m) {
 710         test(__func__, m, "exec-standardinput-data.service", 0, CLD_EXITED);
 711         test(__func__, m, "exec-standardinput-file.service", 0, CLD_EXITED);
 712 }
 713
 714 static void test_exec_standardoutput(Manager *m) {
 715         test(__func__, m, "exec-standardoutput-file.service", 0, CLD_EXITED);
 716 }
 717
 718 static void test_exec_standardoutput_append(Manager *m) {
 719         test(__func__, m, "exec-standardoutput-append.service", 0, CLD_EXITED);
 720 }
 721
 722 typedef struct test_entry {
 723         test_function_t f;
 724         const char *name;
 725 } test_entry;
 726
 727 #define entry(x) {x, #x}
 728
 729 static int run_tests(UnitFileScope scope, const test_entry tests[], char **patterns) {
 730         const test_entry *test = NULL;
 731         _cleanup_(manager_freep) Manager *m = NULL;
 732         int r;
 733
 734         assert_se(tests);
 735
 736         r = manager_new(scope, MANAGER_TEST_RUN_BASIC, &m);
 737         if (MANAGER_SKIP_TEST(r))
 738                 return log_tests_skipped_errno(r, "manager_new");
 739         assert_se(r >= 0);
 740         assert_se(manager_startup(m, NULL, NULL) >= 0);
 741
 742         for (test = tests; test && test->f; test++)
 743                 if (strv_fnmatch_or_empty(patterns, test->name, FNM_NOESCAPE))
 744                         test->f(m);
 745                 else
 746                         log_info("Skipping %s because it does not match any pattern.", test->name);
 747
 748         return 0;
 749 }
 750
 751
 752 int main(int argc, char *argv[]) {
 753         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
 754         _cleanup_free_ char *test_execute_path = NULL;
 755
 756         static const test_entry user_tests[] = {
 757                 entry(test_exec_basic),
 758                 entry(test_exec_ambientcapabilities),
 759                 entry(test_exec_bindpaths),
 760                 entry(test_exec_capabilityboundingset),
 761                 entry(test_exec_cpuaffinity),
 762                 entry(test_exec_environment),
 763                 entry(test_exec_environmentfile),
 764                 entry(test_exec_group),
 765                 entry(test_exec_ignoresigpipe),
 766                 entry(test_exec_inaccessiblepaths),
 767                 entry(test_exec_ioschedulingclass),
 768                 entry(test_exec_oomscoreadjust),
 769                 entry(test_exec_passenvironment),
 770                 entry(test_exec_personality),
 771                 entry(test_exec_privatedevices),
 772                 entry(test_exec_privatenetwork),
 773                 entry(test_exec_privatetmp),
 774                 entry(test_exec_protecthome),
 775                 entry(test_exec_protectkernelmodules),
 776                 entry(test_exec_readonlypaths),
 777                 entry(test_exec_readwritepaths),
 778                 entry(test_exec_restrictnamespaces),
 779                 entry(test_exec_runtimedirectory),
 780                 entry(test_exec_standardinput),
 781                 entry(test_exec_standardoutput),
 782                 entry(test_exec_standardoutput_append),
 783                 entry(test_exec_supplementarygroups),
 784                 entry(test_exec_systemcallerrornumber),
 785                 entry(test_exec_systemcallfilter),
 786                 entry(test_exec_temporaryfilesystem),
 787                 entry(test_exec_umask),
 788                 entry(test_exec_unsetenvironment),
 789                 entry(test_exec_user),
 790                 entry(test_exec_workingdirectory),
 791                 {},
 792         };
 793         static const test_entry system_tests[] = {
 794                 entry(test_exec_dynamicuser),
 795                 entry(test_exec_specifier),
 796                 entry(test_exec_systemcallfilter_system),
 797                 {},
 798         };
 799         int r;
 800
 801         test_setup_logging(LOG_DEBUG);
 802
 803 #if HAS_FEATURE_ADDRESS_SANITIZER
 804         if (is_run_on_travis_ci()) {
 805                 log_notice("Running on TravisCI under ASan, skipping, see https://github.com/systemd/systemd/issues/10696");
 806                 return EXIT_TEST_SKIP;
 807         }
 808 #endif
 809
 810         (void) unsetenv("USER");
 811         (void) unsetenv("LOGNAME");
 812         (void) unsetenv("SHELL");
 813         (void) unsetenv("HOME");
 814
 815         can_unshare = have_namespaces();
 816
 817         /* It is needed otherwise cgroup creation fails */
 818         if (getuid() != 0)
 819                 return log_tests_skipped("not root");
 820
 821         r = enter_cgroup_subroot();
 822         if (r == -ENOMEDIUM)
 823                 return log_tests_skipped("cgroupfs not available");
 824
 825         assert_se(runtime_dir = setup_fake_runtime_dir());
 826         test_execute_path = path_join(get_testdata_dir(), "test-execute");
 827         assert_se(set_unit_path(test_execute_path) >= 0);
 828
 829         /* Unset VAR1, VAR2 and VAR3 which are used in the PassEnvironment test
 830          * cases, otherwise (and if they are present in the environment),
 831          * `manager_default_environment` will copy them into the default
 832          * environment which is passed to each created job, which will make the
 833          * tests that expect those not to be present to fail.
 834          */
 835         assert_se(unsetenv("VAR1") == 0);
 836         assert_se(unsetenv("VAR2") == 0);
 837         assert_se(unsetenv("VAR3") == 0);
 838
 839         r = run_tests(UNIT_FILE_USER, user_tests, argv + 1);
 840         if (r != 0)
 841                 return r;
 842
 843         r = run_tests(UNIT_FILE_SYSTEM, system_tests, argv + 1);
 844         if (r != 0)
 845                 return r;
 846
 847 #if HAVE_SECCOMP
 848         /* The following tests are for 1beab8b0d0ff2d7d1436b52d4a0c3d56dc908962. */
 849         if (!is_seccomp_available()) {
 850                 log_notice("Seccomp not available, skipping unshare() filtered tests.");
 851                 return 0;
 852         }
 853
 854         _cleanup_hashmap_free_ Hashmap *s = NULL;
 855         assert_se(s = hashmap_new(NULL));
 856         r = seccomp_syscall_resolve_name("unshare");
 857         assert_se(r != __NR_SCMP_ERROR);
 858         assert_se(hashmap_put(s, UINT32_TO_PTR(r + 1), INT_TO_PTR(-1)) >= 0);
 859         assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, s, SCMP_ACT_ERRNO(EOPNOTSUPP), true) >= 0);
 860         assert_se(unshare(CLONE_NEWNS) < 0);
 861         assert_se(errno == EOPNOTSUPP);
 862
 863         can_unshare = false;
 864
 865         r = run_tests(UNIT_FILE_USER, user_tests, argv + 1);
 866         if (r != 0)
 867                 return r;
 868
 869         return run_tests(UNIT_FILE_SYSTEM, system_tests, argv + 1);
 870 #else
 871         return 0;
 872 #endif
 873 }