1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
10 #include "capability-util.h"
11 #include "cpu-set-util.h"
14 #include "errno-list.h"
20 #include "missing_prctl.h"
22 #include "mount-util.h"
23 #include "path-util.h"
24 #include "process-util.h"
26 #include "seccomp-util.h"
28 #include "signal-util.h"
29 #include "static-destruct.h"
30 #include "stat-util.h"
32 #include "tmpfile-util.h"
34 #include "user-util.h"
37 #define PRIVATE_UNIT_DIR "/run/test-execute-unit-dir"
39 static char *user_runtime_unit_dir
= NULL
;
40 static bool can_unshare
;
41 static bool have_net_dummy
;
42 static bool have_netns
;
43 static unsigned n_ran_tests
= 0;
45 STATIC_DESTRUCTOR_REGISTER(user_runtime_unit_dir
, freep
);
47 typedef void (*test_function_t
)(Manager
*m
);
49 static int cld_dumped_to_killed(int code
) {
50 /* Depending on the system, seccomp version, … some signals might result in dumping, others in plain
51 * killing. Let's ignore the difference here, and map both cases to CLD_KILLED */
52 return code
== CLD_DUMPED
? CLD_KILLED
: code
;
55 static void wait_for_service_finish(Manager
*m
, Unit
*unit
) {
56 Service
*service
= NULL
;
58 usec_t timeout
= 2 * USEC_PER_MINUTE
;
63 service
= SERVICE(unit
);
64 printf("%s\n", unit
->id
);
65 exec_context_dump(&service
->exec_context
, stdout
, "\t");
66 ts
= now(CLOCK_MONOTONIC
);
67 while (!IN_SET(service
->state
, SERVICE_DEAD
, SERVICE_FAILED
)) {
71 r
= sd_event_run(m
->event
, 100 * USEC_PER_MSEC
);
74 n
= now(CLOCK_MONOTONIC
);
75 if (ts
+ timeout
< n
) {
76 log_error("Test timeout when testing %s", unit
->id
);
77 r
= unit_kill(unit
, KILL_ALL
, SIGKILL
, SI_USER
, 0, NULL
);
79 log_error_errno(r
, "Failed to kill %s: %m", unit
->id
);
85 static void check_main_result(const char *file
, unsigned line
, const char *func
,
86 Manager
*m
, Unit
*unit
, int status_expected
, int code_expected
) {
87 Service
*service
= NULL
;
92 wait_for_service_finish(m
, unit
);
94 service
= SERVICE(unit
);
95 exec_status_dump(&service
->main_exec_status
, stdout
, "\t");
97 if (cld_dumped_to_killed(service
->main_exec_status
.code
) != cld_dumped_to_killed(code_expected
)) {
98 log_error("%s:%u:%s %s: can_unshare=%s: exit code %d, expected %d",
99 file
, line
, func
, unit
->id
, yes_no(can_unshare
),
100 service
->main_exec_status
.code
, code_expected
);
104 if (service
->main_exec_status
.status
!= status_expected
) {
105 log_error("%s:%u:%s: %s: can_unshare=%s: exit status %d, expected %d",
106 file
, line
, func
, unit
->id
, yes_no(can_unshare
),
107 service
->main_exec_status
.status
, status_expected
);
112 static void check_service_result(const char *file
, unsigned line
, const char *func
,
113 Manager
*m
, Unit
*unit
, ServiceResult result_expected
) {
114 Service
*service
= NULL
;
119 wait_for_service_finish(m
, unit
);
121 service
= SERVICE(unit
);
123 if (service
->result
!= result_expected
) {
124 log_error("%s:%u:%s: %s: can_unshare=%s: service end result %s, expected %s",
125 file
, line
, func
, unit
->id
, yes_no(can_unshare
),
126 service_result_to_string(service
->result
),
127 service_result_to_string(result_expected
));
132 static bool check_nobody_user_and_group(void) {
133 static int cache
= -1;
140 if (!synthesize_nobody())
143 p
= getpwnam(NOBODY_USER_NAME
);
145 !streq(p
->pw_name
, NOBODY_USER_NAME
) ||
146 p
->pw_uid
!= UID_NOBODY
||
147 p
->pw_gid
!= GID_NOBODY
)
150 p
= getpwuid(UID_NOBODY
);
152 !streq(p
->pw_name
, NOBODY_USER_NAME
) ||
153 p
->pw_uid
!= UID_NOBODY
||
154 p
->pw_gid
!= GID_NOBODY
)
157 g
= getgrnam(NOBODY_GROUP_NAME
);
159 !streq(g
->gr_name
, NOBODY_GROUP_NAME
) ||
160 g
->gr_gid
!= GID_NOBODY
)
163 g
= getgrgid(GID_NOBODY
);
165 !streq(g
->gr_name
, NOBODY_GROUP_NAME
) ||
166 g
->gr_gid
!= GID_NOBODY
)
177 static bool check_user_has_group_with_same_name(const char *name
) {
185 !streq(p
->pw_name
, name
))
188 g
= getgrgid(p
->pw_gid
);
190 !streq(g
->gr_name
, name
))
196 static bool is_inaccessible_available(void) {
198 "/run/systemd/inaccessible/reg",
199 "/run/systemd/inaccessible/dir",
200 "/run/systemd/inaccessible/chr",
201 "/run/systemd/inaccessible/blk",
202 "/run/systemd/inaccessible/fifo",
203 "/run/systemd/inaccessible/sock")
204 if (access(p
, F_OK
) < 0)
210 static void start_parent_slices(Unit
*unit
) {
213 slice
= UNIT_GET_SLICE(unit
);
215 start_parent_slices(slice
);
216 int r
= unit_start(slice
, NULL
);
217 assert_se(r
>= 0 || r
== -EALREADY
);
221 static bool have_userns_privileges(void) {
225 r
= safe_fork("(sd-test-check-userns)",
228 FORK_DEATHSIG_SIGKILL
,
232 /* Keep CAP_SYS_ADMIN if we have it to ensure we give an
233 * accurate result to the caller. Some kernels have a
234 * kernel.unprivileged_userns_clone sysctl which can be
235 * configured to make CLONE_NEWUSER require CAP_SYS_ADMIN.
236 * Additionally, AppArmor may restrict unprivileged user
237 * namespace creation. */
238 r
= capability_bounding_set_drop(UINT64_C(1) << CAP_SYS_ADMIN
, /* right_now = */ true);
240 log_debug_errno(r
, "Failed to drop capabilities: %m");
244 r
= RET_NERRNO(unshare(CLONE_NEWUSER
));
245 if (r
< 0 && !ERRNO_IS_NEG_PRIVILEGE(r
))
246 log_debug_errno(r
, "Failed to create user namespace: %m");
248 _exit(r
>= 0 ? EXIT_SUCCESS
: ERRNO_IS_NEG_PRIVILEGE(r
) ? EXIT_FAILURE
: 2);
251 /* The exit code records the result of the check:
252 * EXIT_SUCCESS => we can use user namespaces
253 * EXIT_FAILURE => we can NOT use user namespaces
254 * 2 => some other error occurred */
255 r
= wait_for_terminate_and_check("(sd-test-check-userns)", pid
, 0);
256 if (!IN_SET(r
, EXIT_SUCCESS
, EXIT_FAILURE
))
257 log_debug("Failed to check if user namespaces can be used, assuming not.");
259 return r
== EXIT_SUCCESS
;
262 static void _test(const char *file
, unsigned line
, const char *func
,
263 Manager
*m
, const char *unit_name
, int status_expected
, int code_expected
) {
266 assert_se(unit_name
);
268 assert_se(manager_load_startable_unit_or_warn(m
, unit_name
, NULL
, &unit
) >= 0);
269 /* We need to start the slices as well otherwise the slice cgroups might be pruned
270 * in on_cgroup_empty_event. */
271 start_parent_slices(unit
);
272 assert_se(unit_start(unit
, NULL
) >= 0);
273 check_main_result(file
, line
, func
, m
, unit
, status_expected
, code_expected
);
277 #define test(m, unit_name, status_expected, code_expected) \
278 _test(PROJECT_FILE, __LINE__, __func__, m, unit_name, status_expected, code_expected)
280 static void _test_service(const char *file
, unsigned line
, const char *func
,
281 Manager
*m
, const char *unit_name
, ServiceResult result_expected
) {
284 assert_se(unit_name
);
286 assert_se(manager_load_startable_unit_or_warn(m
, unit_name
, NULL
, &unit
) >= 0);
287 assert_se(unit_start(unit
, NULL
) >= 0);
288 check_service_result(file
, line
, func
, m
, unit
, result_expected
);
290 #define test_service(m, unit_name, result_expected) \
291 _test_service(PROJECT_FILE, __LINE__, __func__, m, unit_name, result_expected)
293 static void test_exec_bindpaths(Manager
*m
) {
294 assert_se(mkdir_p("/tmp/test-exec-bindpaths", 0755) >= 0);
295 assert_se(mkdir_p("/tmp/test-exec-bindreadonlypaths", 0755) >= 0);
297 test(m
, "exec-bindpaths.service", can_unshare
? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
299 (void) rm_rf("/tmp/test-exec-bindpaths", REMOVE_ROOT
|REMOVE_PHYSICAL
);
300 (void) rm_rf("/tmp/test-exec-bindreadonlypaths", REMOVE_ROOT
|REMOVE_PHYSICAL
);
303 static void test_exec_cpuaffinity(Manager
*m
) {
304 _cleanup_(cpu_set_reset
) CPUSet c
= {};
306 assert_se(cpu_set_realloc(&c
, 8192) >= 0); /* just allocate the maximum possible size */
307 assert_se(sched_getaffinity(0, c
.allocated
, c
.set
) >= 0);
309 if (!CPU_ISSET_S(0, c
.allocated
, c
.set
)) {
310 log_notice("Cannot use CPU 0, skipping %s", __func__
);
314 test(m
, "exec-cpuaffinity1.service", 0, CLD_EXITED
);
315 test(m
, "exec-cpuaffinity2.service", 0, CLD_EXITED
);
317 if (!CPU_ISSET_S(1, c
.allocated
, c
.set
) ||
318 !CPU_ISSET_S(2, c
.allocated
, c
.set
)) {
319 log_notice("Cannot use CPU 1 or 2, skipping remaining tests in %s", __func__
);
323 test(m
, "exec-cpuaffinity3.service", 0, CLD_EXITED
);
326 static void test_exec_credentials(Manager
*m
) {
327 test(m
, "exec-set-credential.service", 0, CLD_EXITED
);
328 test(m
, "exec-load-credential.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_CREDENTIALS
, CLD_EXITED
);
329 test(m
, "exec-credentials-dir-specifier.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_CREDENTIALS
, CLD_EXITED
);
332 static void test_exec_workingdirectory(Manager
*m
) {
333 assert_se(mkdir_p("/tmp/test-exec_workingdirectory", 0755) >= 0);
335 test(m
, "exec-workingdirectory.service", 0, CLD_EXITED
);
336 test(m
, "exec-workingdirectory-trailing-dot.service", 0, CLD_EXITED
);
338 (void) rm_rf("/tmp/test-exec_workingdirectory", REMOVE_ROOT
|REMOVE_PHYSICAL
);
341 static void test_exec_execsearchpath(Manager
*m
) {
342 assert_se(mkdir_p("/tmp/test-exec_execsearchpath", 0755) >= 0);
344 assert_se(copy_file("/bin/ls", "/tmp/test-exec_execsearchpath/ls_temp", 0, 0777, COPY_REPLACE
) >= 0);
346 test(m
, "exec-execsearchpath.service", 0, CLD_EXITED
);
348 assert_se(rm_rf("/tmp/test-exec_execsearchpath", REMOVE_ROOT
|REMOVE_PHYSICAL
) >= 0);
350 test(m
, "exec-execsearchpath.service", EXIT_EXEC
, CLD_EXITED
);
353 static void test_exec_execsearchpath_specifier(Manager
*m
) {
354 test(m
, "exec-execsearchpath-unit-specifier.service", 0, CLD_EXITED
);
357 static void test_exec_execsearchpath_environment(Manager
*m
) {
358 test(m
, "exec-execsearchpath-environment.service", 0, CLD_EXITED
);
359 test(m
, "exec-execsearchpath-environment-path-set.service", 0, CLD_EXITED
);
362 static void test_exec_execsearchpath_environment_files(Manager
*m
) {
363 static const char path_not_set
[] =
364 "VAR1='word1 word2'\n"
370 "line without an equal\n"
373 "VAR5=password\\with\\backslashes";
375 static const char path_set
[] =
376 "VAR1='word1 word2'\n"
382 "line without an equal\n"
385 "VAR5=password\\with\\backslashes\n"
390 r
= write_string_file("/tmp/test-exec_execsearchpath_environmentfile.conf", path_not_set
, WRITE_STRING_FILE_CREATE
);
394 test(m
, "exec-execsearchpath-environmentfile.service", 0, CLD_EXITED
);
396 (void) unlink("/tmp/test-exec_environmentfile.conf");
399 r
= write_string_file("/tmp/test-exec_execsearchpath_environmentfile-set.conf", path_set
, WRITE_STRING_FILE_CREATE
);
403 test(m
, "exec-execsearchpath-environmentfile-set.service", 0, CLD_EXITED
);
405 (void) unlink("/tmp/test-exec_environmentfile-set.conf");
408 static void test_exec_execsearchpath_passenvironment(Manager
*m
) {
409 assert_se(setenv("VAR1", "word1 word2", 1) == 0);
410 assert_se(setenv("VAR2", "word3", 1) == 0);
411 assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
412 assert_se(setenv("VAR4", "new\nline", 1) == 0);
413 assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
415 test(m
, "exec-execsearchpath-passenvironment.service", 0, CLD_EXITED
);
417 assert_se(setenv("PATH", "/usr", 1) == 0);
418 test(m
, "exec-execsearchpath-passenvironment-set.service", 0, CLD_EXITED
);
420 assert_se(unsetenv("VAR1") == 0);
421 assert_se(unsetenv("VAR2") == 0);
422 assert_se(unsetenv("VAR3") == 0);
423 assert_se(unsetenv("VAR4") == 0);
424 assert_se(unsetenv("VAR5") == 0);
425 assert_se(unsetenv("PATH") == 0);
428 static void test_exec_personality(Manager
*m
) {
429 #if defined(__x86_64__)
430 test(m
, "exec-personality-x86-64.service", 0, CLD_EXITED
);
432 #elif defined(__s390__)
433 test(m
, "exec-personality-s390.service", 0, CLD_EXITED
);
435 #elif defined(__powerpc64__)
436 # if __BYTE_ORDER == __BIG_ENDIAN
437 test(m
, "exec-personality-ppc64.service", 0, CLD_EXITED
);
439 test(m
, "exec-personality-ppc64le.service", 0, CLD_EXITED
);
442 #elif defined(__aarch64__)
443 test(m
, "exec-personality-aarch64.service", 0, CLD_EXITED
);
445 #elif defined(__i386__)
446 test(m
, "exec-personality-x86.service", 0, CLD_EXITED
);
447 #elif defined(__loongarch_lp64)
448 test(m
, "exec-personality-loongarch64.service", 0, CLD_EXITED
);
450 log_notice("Unknown personality, skipping %s", __func__
);
454 static void test_exec_ignoresigpipe(Manager
*m
) {
455 test(m
, "exec-ignoresigpipe-yes.service", 0, CLD_EXITED
);
456 test(m
, "exec-ignoresigpipe-no.service", SIGPIPE
, CLD_KILLED
);
459 static void test_exec_privatetmp(Manager
*m
) {
460 assert_se(touch("/tmp/test-exec_privatetmp") >= 0);
462 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges()) {
463 test(m
, "exec-privatetmp-yes.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
464 test(m
, "exec-privatetmp-disabled-by-prefix.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
467 test(m
, "exec-privatetmp-no.service", 0, CLD_EXITED
);
469 (void) unlink("/tmp/test-exec_privatetmp");
472 static void test_exec_privatedevices(Manager
*m
) {
475 if (detect_container() > 0) {
476 log_notice("Testing in container, skipping %s", __func__
);
479 if (!is_inaccessible_available()) {
480 log_notice("Testing without inaccessible, skipping %s", __func__
);
484 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges()) {
485 test(m
, "exec-privatedevices-yes.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
486 if (access("/dev/kmsg", F_OK
) >= 0)
487 test(m
, "exec-privatedevices-bind.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
488 test(m
, "exec-privatedevices-disabled-by-prefix.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
489 test(m
, "exec-privatedevices-yes-with-group.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
492 test(m
, "exec-privatedevices-no.service", 0, CLD_EXITED
);
494 /* We use capsh to test if the capabilities are
495 * properly set, so be sure that it exists */
496 r
= find_executable("capsh", NULL
);
498 log_notice_errno(r
, "Could not find capsh binary, skipping remaining tests in %s: %m", __func__
);
502 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges()) {
503 test(m
, "exec-privatedevices-yes-capability-mknod.service", can_unshare
|| MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
504 test(m
, "exec-privatedevices-yes-capability-sys-rawio.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
507 test(m
, "exec-privatedevices-no-capability-mknod.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_FAILURE
, CLD_EXITED
);
508 test(m
, "exec-privatedevices-no-capability-sys-rawio.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_FAILURE
, CLD_EXITED
);
511 static void test_exec_protecthome(Manager
*m
) {
513 log_notice("Cannot reliably unshare, skipping %s", __func__
);
517 test(m
, "exec-protecthome-tmpfs-vs-protectsystem-strict.service", 0, CLD_EXITED
);
520 static void test_exec_protectkernelmodules(Manager
*m
) {
523 if (detect_container() > 0) {
524 log_notice("Testing in container, skipping %s", __func__
);
527 if (!is_inaccessible_available()) {
528 log_notice("Testing without inaccessible, skipping %s", __func__
);
532 r
= find_executable("capsh", NULL
);
534 log_notice_errno(r
, "Skipping %s, could not find capsh binary: %m", __func__
);
538 test(m
, "exec-protectkernelmodules-no-capabilities.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_FAILURE
, CLD_EXITED
);
540 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges()) {
541 test(m
, "exec-protectkernelmodules-yes-capabilities.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
542 test(m
, "exec-protectkernelmodules-yes-mount-propagation.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
546 static void test_exec_readonlypaths(Manager
*m
) {
548 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges())
549 test(m
, "exec-readonlypaths-simple.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
551 if (path_is_read_only_fs("/var") > 0) {
552 log_notice("Directory /var is readonly, skipping remaining tests in %s", __func__
);
556 test(m
, "exec-readonlypaths.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
557 test(m
, "exec-readonlypaths-with-bindpaths.service", can_unshare
? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
558 test(m
, "exec-readonlypaths-mount-propagation.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
561 static void test_exec_readwritepaths(Manager
*m
) {
563 if (path_is_read_only_fs("/") > 0) {
564 log_notice("Root directory is readonly, skipping %s", __func__
);
568 test(m
, "exec-readwritepaths-mount-propagation.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
571 static void test_exec_inaccessiblepaths(Manager
*m
) {
573 if (!is_inaccessible_available()) {
574 log_notice("Testing without inaccessible, skipping %s", __func__
);
578 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges())
579 test(m
, "exec-inaccessiblepaths-sys.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
581 if (path_is_read_only_fs("/") > 0) {
582 log_notice("Root directory is readonly, skipping remaining tests in %s", __func__
);
586 test(m
, "exec-inaccessiblepaths-mount-propagation.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
589 static int on_spawn_io(sd_event_source
*s
, int fd
, uint32_t revents
, void *userdata
) {
590 char **result
= userdata
;
597 l
= read(fd
, buf
, sizeof(buf
) - 1);
609 assert_se(strextend(result
, buf
));
611 log_error("ldd: %s", buf
);
614 /* Re-enable the event source if we did not encounter EOF */
615 assert_se(sd_event_source_set_enabled(s
, SD_EVENT_ONESHOT
) >= 0);
619 static int on_spawn_timeout(sd_event_source
*s
, uint64_t usec
, void *userdata
) {
620 pid_t
*pid
= userdata
;
624 (void) kill(*pid
, SIGKILL
);
629 static int on_spawn_sigchld(sd_event_source
*s
, const siginfo_t
*si
, void *userdata
) {
634 if (si
->si_code
== CLD_EXITED
)
637 sd_event_exit(sd_event_source_get_event(s
), ret
);
641 static int find_libraries(const char *exec
, char ***ret
) {
642 _cleanup_(sd_event_unrefp
) sd_event
*e
= NULL
;
643 _cleanup_(sd_event_source_unrefp
) sd_event_source
*sigchld_source
= NULL
;
644 _cleanup_(sd_event_source_unrefp
) sd_event_source
*stdout_source
= NULL
;
645 _cleanup_(sd_event_source_unrefp
) sd_event_source
*stderr_source
= NULL
;
646 _cleanup_close_pair_
int outpipe
[2] = EBADF_PAIR
, errpipe
[2] = EBADF_PAIR
;
647 _cleanup_strv_free_
char **libraries
= NULL
;
648 _cleanup_free_
char *result
= NULL
;
655 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGCHLD
) >= 0);
657 assert_se(pipe2(outpipe
, O_NONBLOCK
|O_CLOEXEC
) == 0);
658 assert_se(pipe2(errpipe
, O_NONBLOCK
|O_CLOEXEC
) == 0);
660 r
= safe_fork_full("(spawn-ldd)",
661 (int[]) { -EBADF
, outpipe
[1], errpipe
[1] },
663 FORK_RESET_SIGNALS
|FORK_CLOSE_ALL_FDS
|FORK_DEATHSIG_SIGTERM
|FORK_REARRANGE_STDIO
|FORK_LOG
, &pid
);
666 execlp("ldd", "ldd", exec
, NULL
);
670 outpipe
[1] = safe_close(outpipe
[1]);
671 errpipe
[1] = safe_close(errpipe
[1]);
673 assert_se(sd_event_new(&e
) >= 0);
675 assert_se(sd_event_add_time_relative(e
, NULL
, CLOCK_MONOTONIC
,
676 10 * USEC_PER_SEC
, USEC_PER_SEC
, on_spawn_timeout
, &pid
) >= 0);
677 assert_se(sd_event_add_io(e
, &stdout_source
, outpipe
[0], EPOLLIN
, on_spawn_io
, &result
) >= 0);
678 assert_se(sd_event_source_set_enabled(stdout_source
, SD_EVENT_ONESHOT
) >= 0);
679 assert_se(sd_event_add_io(e
, &stderr_source
, errpipe
[0], EPOLLIN
, on_spawn_io
, NULL
) >= 0);
680 assert_se(sd_event_source_set_enabled(stderr_source
, SD_EVENT_ONESHOT
) >= 0);
681 assert_se(sd_event_add_child(e
, &sigchld_source
, pid
, WEXITED
, on_spawn_sigchld
, NULL
) >= 0);
682 /* SIGCHLD should be processed after IO is complete */
683 assert_se(sd_event_source_set_priority(sigchld_source
, SD_EVENT_PRIORITY_NORMAL
+ 1) >= 0);
685 assert_se(sd_event_loop(e
) >= 0);
687 _cleanup_strv_free_
char **v
= NULL
;
688 assert_se(strv_split_newlines_full(&v
, result
, 0) >= 0);
691 _cleanup_free_
char *word
= NULL
;
694 r
= extract_first_word(&p
, &word
, NULL
, 0);
699 if (path_is_absolute(word
)) {
700 assert_se(strv_consume(&libraries
, TAKE_PTR(word
)) >= 0);
705 r
= extract_first_word(&p
, &word
, NULL
, 0);
710 if (!streq_ptr(word
, "=>"))
714 r
= extract_first_word(&p
, &word
, NULL
, 0);
719 if (path_is_absolute(word
)) {
720 assert_se(strv_consume(&libraries
, TAKE_PTR(word
)) >= 0);
725 *ret
= TAKE_PTR(libraries
);
729 static void test_exec_mount_apivfs(Manager
*m
) {
730 _cleanup_free_
char *fullpath_touch
= NULL
, *fullpath_test
= NULL
, *data
= NULL
;
731 _cleanup_strv_free_
char **libraries
= NULL
, **libraries_test
= NULL
;
734 assert_se(user_runtime_unit_dir
);
736 r
= find_executable("ldd", NULL
);
738 log_notice_errno(r
, "Skipping %s, could not find 'ldd' command: %m", __func__
);
741 r
= find_executable("touch", &fullpath_touch
);
743 log_notice_errno(r
, "Skipping %s, could not find 'touch' command: %m", __func__
);
746 r
= find_executable("test", &fullpath_test
);
748 log_notice_errno(r
, "Skipping %s, could not find 'test' command: %m", __func__
);
752 if (MANAGER_IS_USER(m
) && !have_userns_privileges())
753 return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__
);
755 assert_se(find_libraries(fullpath_touch
, &libraries
) >= 0);
756 assert_se(find_libraries(fullpath_test
, &libraries_test
) >= 0);
757 assert_se(strv_extend_strv(&libraries
, libraries_test
, true) >= 0);
759 assert_se(strextend(&data
, "[Service]\n"));
760 assert_se(strextend(&data
, "ExecStart=", fullpath_touch
, " /aaa\n"));
761 assert_se(strextend(&data
, "ExecStart=", fullpath_test
, " -f /aaa\n"));
762 assert_se(strextend(&data
, "BindReadOnlyPaths=", fullpath_touch
, "\n"));
763 assert_se(strextend(&data
, "BindReadOnlyPaths=", fullpath_test
, "\n"));
765 STRV_FOREACH(p
, libraries
)
766 assert_se(strextend(&data
, "BindReadOnlyPaths=", *p
, "\n"));
768 assert_se(write_drop_in(user_runtime_unit_dir
, "exec-mount-apivfs-no.service", 10, "bind-mount", data
) >= 0);
770 assert_se(mkdir_p("/tmp/test-exec-mount-apivfs-no/root", 0755) >= 0);
772 test(m
, "exec-mount-apivfs-no.service", can_unshare
|| !MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
774 (void) rm_rf("/tmp/test-exec-mount-apivfs-no/root", REMOVE_ROOT
|REMOVE_PHYSICAL
);
777 static void test_exec_noexecpaths(Manager
*m
) {
779 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges())
780 test(m
, "exec-noexecpaths-simple.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
782 return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__
);
785 static void test_exec_temporaryfilesystem(Manager
*m
) {
787 test(m
, "exec-temporaryfilesystem-options.service", can_unshare
? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
788 test(m
, "exec-temporaryfilesystem-ro.service", can_unshare
? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
789 test(m
, "exec-temporaryfilesystem-rw.service", can_unshare
? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
790 test(m
, "exec-temporaryfilesystem-usr.service", can_unshare
? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
793 static void test_exec_systemcallfilter(Manager
*m
) {
797 if (!is_seccomp_available()) {
798 log_notice("Seccomp not available, skipping %s", __func__
);
802 test(m
, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED
);
803 test(m
, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED
);
804 test(m
, "exec-systemcallfilter-not-failing3.service", 0, CLD_EXITED
);
805 test(m
, "exec-systemcallfilter-failing.service", SIGSYS
, CLD_KILLED
);
806 test(m
, "exec-systemcallfilter-failing2.service", SIGSYS
, CLD_KILLED
);
807 test(m
, "exec-systemcallfilter-failing3.service", SIGSYS
, CLD_KILLED
);
809 r
= find_executable("python3", NULL
);
811 log_notice_errno(r
, "Skipping remaining tests in %s, could not find python3 binary: %m", __func__
);
815 test(m
, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED
);
816 test(m
, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED
);
817 test(m
, "exec-systemcallfilter-with-errno-multi.service", errno_from_name("EILSEQ"), CLD_EXITED
);
818 test(m
, "exec-systemcallfilter-with-errno-in-allow-list.service", errno_from_name("EILSEQ"), CLD_EXITED
);
819 test(m
, "exec-systemcallfilter-override-error-action.service", SIGSYS
, CLD_KILLED
);
820 test(m
, "exec-systemcallfilter-override-error-action2.service", errno_from_name("EILSEQ"), CLD_EXITED
);
822 test(m
, "exec-systemcallfilter-nonewprivileges.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
823 test(m
, "exec-systemcallfilter-nonewprivileges-protectclock.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
825 r
= find_executable("capsh", NULL
);
827 log_notice_errno(r
, "Skipping %s, could not find capsh binary: %m", __func__
);
831 test(m
, "exec-systemcallfilter-nonewprivileges-bounding1.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
832 test(m
, "exec-systemcallfilter-nonewprivileges-bounding2.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
836 static void test_exec_systemcallerrornumber(Manager
*m
) {
840 if (!is_seccomp_available()) {
841 log_notice("Seccomp not available, skipping %s", __func__
);
845 r
= find_executable("python3", NULL
);
847 log_notice_errno(r
, "Skipping %s, could not find python3 binary: %m", __func__
);
851 test(m
, "exec-systemcallerrornumber-name.service", errno_from_name("EACCES"), CLD_EXITED
);
852 test(m
, "exec-systemcallerrornumber-number.service", 255, CLD_EXITED
);
856 static void test_exec_restrictnamespaces(Manager
*m
) {
858 if (!is_seccomp_available()) {
859 log_notice("Seccomp not available, skipping %s", __func__
);
863 test(m
, "exec-restrictnamespaces-no.service", can_unshare
? 0 : EXIT_FAILURE
, CLD_EXITED
);
864 test(m
, "exec-restrictnamespaces-yes.service", 1, CLD_EXITED
);
865 test(m
, "exec-restrictnamespaces-mnt.service", can_unshare
? 0 : EXIT_FAILURE
, CLD_EXITED
);
866 test(m
, "exec-restrictnamespaces-mnt-deny-list.service", 1, CLD_EXITED
);
867 test(m
, "exec-restrictnamespaces-merge-and.service", can_unshare
? 0 : EXIT_FAILURE
, CLD_EXITED
);
868 test(m
, "exec-restrictnamespaces-merge-or.service", can_unshare
? 0 : EXIT_FAILURE
, CLD_EXITED
);
869 test(m
, "exec-restrictnamespaces-merge-all.service", can_unshare
? 0 : EXIT_FAILURE
, CLD_EXITED
);
873 static void test_exec_systemcallfilter_system(Manager
*m
) {
874 /* Skip this particular test case when running under ASan, as
875 * LSan intermittently segfaults when accessing memory right
876 * after the test finishes. Generally, ASan & LSan don't like
879 #if HAVE_SECCOMP && !HAS_FEATURE_ADDRESS_SANITIZER
880 if (!is_seccomp_available()) {
881 log_notice("Seccomp not available, skipping %s", __func__
);
885 test(m
, "exec-systemcallfilter-system-user.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
887 if (!check_nobody_user_and_group()) {
888 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__
);
892 if (!STR_IN_SET(NOBODY_USER_NAME
, "nobody", "nfsnobody")) {
893 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME
, __func__
);
897 test(m
, "exec-systemcallfilter-system-user-" NOBODY_USER_NAME
".service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
901 static void test_exec_user(Manager
*m
) {
902 test(m
, "exec-user.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
904 if (!check_nobody_user_and_group()) {
905 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__
);
909 if (!STR_IN_SET(NOBODY_USER_NAME
, "nobody", "nfsnobody")) {
910 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME
, __func__
);
914 test(m
, "exec-user-" NOBODY_USER_NAME
".service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
917 static void test_exec_group(Manager
*m
) {
918 test(m
, "exec-group.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
920 if (!check_nobody_user_and_group()) {
921 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__
);
925 if (!STR_IN_SET(NOBODY_GROUP_NAME
, "nobody", "nfsnobody", "nogroup")) {
926 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME
, __func__
);
930 test(m
, "exec-group-" NOBODY_GROUP_NAME
".service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
933 static void test_exec_supplementarygroups(Manager
*m
) {
934 int status
= MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
;
935 test(m
, "exec-supplementarygroups.service", status
, CLD_EXITED
);
936 test(m
, "exec-supplementarygroups-single-group.service", status
, CLD_EXITED
);
937 test(m
, "exec-supplementarygroups-single-group-user.service", status
, CLD_EXITED
);
938 test(m
, "exec-supplementarygroups-multiple-groups-default-group-user.service", status
, CLD_EXITED
);
939 test(m
, "exec-supplementarygroups-multiple-groups-withgid.service", status
, CLD_EXITED
);
940 test(m
, "exec-supplementarygroups-multiple-groups-withuid.service", status
, CLD_EXITED
);
943 static char* private_directory_bad(Manager
*m
) {
944 /* This mirrors setup_exec_directory(). */
946 for (ExecDirectoryType dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++) {
947 _cleanup_free_
char *p
= NULL
;
950 assert_se(p
= path_join(m
->prefix
[dt
], "private"));
952 if (stat(p
, &st
) >= 0 &&
953 (st
.st_mode
& (S_IRWXG
|S_IRWXO
)))
960 static void test_exec_dynamicuser(Manager
*m
) {
961 _cleanup_free_
char *bad
= private_directory_bad(m
);
963 log_warning("%s: %s has bad permissions, skipping test.", __func__
, bad
);
967 if (strstr_ptr(ci_environment(), "github-actions")) {
968 log_notice("%s: skipping test on GH Actions because of systemd/systemd#10337", __func__
);
972 int status
= can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_NAMESPACE
: EXIT_GROUP
;
974 test(m
, "exec-dynamicuser-fixeduser.service", status
, CLD_EXITED
);
975 if (check_user_has_group_with_same_name("adm"))
976 test(m
, "exec-dynamicuser-fixeduser-adm.service", status
, CLD_EXITED
);
977 if (check_user_has_group_with_same_name("games"))
978 test(m
, "exec-dynamicuser-fixeduser-games.service", status
, CLD_EXITED
);
979 test(m
, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", status
, CLD_EXITED
);
980 test(m
, "exec-dynamicuser-supplementarygroups.service", status
, CLD_EXITED
);
981 test(m
, "exec-dynamicuser-statedir.service", status
, CLD_EXITED
);
983 (void) rm_rf("/var/lib/quux", REMOVE_ROOT
|REMOVE_PHYSICAL
);
984 (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT
|REMOVE_PHYSICAL
);
985 (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT
|REMOVE_PHYSICAL
);
986 (void) rm_rf("/var/lib/waldo", REMOVE_ROOT
|REMOVE_PHYSICAL
);
987 (void) rm_rf("/var/lib/private/quux", REMOVE_ROOT
|REMOVE_PHYSICAL
);
988 (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT
|REMOVE_PHYSICAL
);
989 (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT
|REMOVE_PHYSICAL
);
990 (void) rm_rf("/var/lib/private/waldo", REMOVE_ROOT
|REMOVE_PHYSICAL
);
992 test(m
, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED
);
993 test(m
, "exec-dynamicuser-statedir-migrate-step2.service", status
, CLD_EXITED
);
994 test(m
, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED
);
996 (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT
|REMOVE_PHYSICAL
);
997 (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT
|REMOVE_PHYSICAL
);
998 (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT
|REMOVE_PHYSICAL
);
999 (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT
|REMOVE_PHYSICAL
);
1001 test(m
, "exec-dynamicuser-runtimedirectory1.service", status
, CLD_EXITED
);
1002 test(m
, "exec-dynamicuser-runtimedirectory2.service", status
, CLD_EXITED
);
1003 test(m
, "exec-dynamicuser-runtimedirectory3.service", status
, CLD_EXITED
);
1006 static void test_exec_environment(Manager
*m
) {
1007 test(m
, "exec-environment-no-substitute.service", 0, CLD_EXITED
);
1008 test(m
, "exec-environment.service", 0, CLD_EXITED
);
1009 test(m
, "exec-environment-multiple.service", 0, CLD_EXITED
);
1010 test(m
, "exec-environment-empty.service", 0, CLD_EXITED
);
1013 static void test_exec_environmentfile(Manager
*m
) {
1014 static const char e
[] =
1015 "VAR1='word1 word2'\n"
1021 "line without an equal\n"
1022 "VAR3='$word 5 6'\n"
1023 "VAR4='new\nline'\n"
1024 "VAR5=password\\with\\backslashes";
1027 r
= write_string_file("/tmp/test-exec_environmentfile.conf", e
, WRITE_STRING_FILE_CREATE
);
1030 test(m
, "exec-environmentfile.service", 0, CLD_EXITED
);
1032 (void) unlink("/tmp/test-exec_environmentfile.conf");
1035 static void test_exec_passenvironment(Manager
*m
) {
1036 /* test-execute runs under MANAGER_USER which, by default, forwards all
1037 * variables present in the environment, but only those that are
1038 * present _at the time it is created_!
1040 * So these PassEnvironment checks are still expected to work, since we
1041 * are ensuring the variables are not present at manager creation (they
1042 * are unset explicitly in main) and are only set here.
1044 * This is still a good approximation of how a test for MANAGER_SYSTEM
1047 assert_se(setenv("VAR1", "word1 word2", 1) == 0);
1048 assert_se(setenv("VAR2", "word3", 1) == 0);
1049 assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
1050 assert_se(setenv("VAR4", "new\nline", 1) == 0);
1051 assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
1052 test(m
, "exec-passenvironment.service", 0, CLD_EXITED
);
1053 test(m
, "exec-passenvironment-repeated.service", 0, CLD_EXITED
);
1054 test(m
, "exec-passenvironment-empty.service", 0, CLD_EXITED
);
1055 assert_se(unsetenv("VAR1") == 0);
1056 assert_se(unsetenv("VAR2") == 0);
1057 assert_se(unsetenv("VAR3") == 0);
1058 assert_se(unsetenv("VAR4") == 0);
1059 assert_se(unsetenv("VAR5") == 0);
1060 test(m
, "exec-passenvironment-absent.service", 0, CLD_EXITED
);
1063 static void test_exec_umask(Manager
*m
) {
1064 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges()) {
1065 test(m
, "exec-umask-default.service", can_unshare
|| MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
1066 test(m
, "exec-umask-0177.service", can_unshare
|| MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
1068 return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__
);
1071 static void test_exec_runtimedirectory(Manager
*m
) {
1072 (void) rm_rf("/run/test-exec_runtimedirectory2", REMOVE_ROOT
|REMOVE_PHYSICAL
);
1073 test(m
, "exec-runtimedirectory.service", 0, CLD_EXITED
);
1074 (void) rm_rf("/run/test-exec_runtimedirectory2", REMOVE_ROOT
|REMOVE_PHYSICAL
);
1076 test(m
, "exec-runtimedirectory-mode.service", 0, CLD_EXITED
);
1077 test(m
, "exec-runtimedirectory-owner.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
1079 if (!check_nobody_user_and_group()) {
1080 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__
);
1084 if (!STR_IN_SET(NOBODY_GROUP_NAME
, "nobody", "nfsnobody", "nogroup")) {
1085 log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME
, __func__
);
1089 test(m
, "exec-runtimedirectory-owner-" NOBODY_GROUP_NAME
".service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_GROUP
, CLD_EXITED
);
1092 static void test_exec_capabilityboundingset(Manager
*m
) {
1095 r
= find_executable("capsh", NULL
);
1097 log_notice_errno(r
, "Skipping %s, could not find capsh binary: %m", __func__
);
1101 if (have_effective_cap(CAP_CHOWN
) <= 0 ||
1102 have_effective_cap(CAP_FOWNER
) <= 0 ||
1103 have_effective_cap(CAP_KILL
) <= 0) {
1104 log_notice("Skipping %s, this process does not have enough capabilities", __func__
);
1108 test(m
, "exec-capabilityboundingset-simple.service", 0, CLD_EXITED
);
1109 test(m
, "exec-capabilityboundingset-reset.service", 0, CLD_EXITED
);
1110 test(m
, "exec-capabilityboundingset-merge.service", 0, CLD_EXITED
);
1111 test(m
, "exec-capabilityboundingset-invert.service", 0, CLD_EXITED
);
1114 static void test_exec_basic(Manager
*m
) {
1115 if (MANAGER_IS_SYSTEM(m
) || have_userns_privileges())
1116 test(m
, "exec-basic.service", can_unshare
|| MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
1118 return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__
);
1121 static void test_exec_ambientcapabilities(Manager
*m
) {
1124 /* Check if the kernel has support for ambient capabilities. Run
1125 * the tests only if that's the case. Clearing all ambient
1126 * capabilities is fine, since we are expecting them to be unset
1127 * in the first place for the tests. */
1128 r
= prctl(PR_CAP_AMBIENT
, PR_CAP_AMBIENT_CLEAR_ALL
, 0, 0, 0);
1129 if (r
< 0 && IN_SET(errno
, EINVAL
, EOPNOTSUPP
, ENOSYS
)) {
1130 log_notice("Skipping %s, the kernel does not support ambient capabilities", __func__
);
1134 if (have_effective_cap(CAP_CHOWN
) <= 0 ||
1135 have_effective_cap(CAP_NET_RAW
) <= 0) {
1136 log_notice("Skipping %s, this process does not have enough capabilities", __func__
);
1140 test(m
, "exec-ambientcapabilities.service", 0, CLD_EXITED
);
1141 test(m
, "exec-ambientcapabilities-merge.service", 0, CLD_EXITED
);
1143 if (have_effective_cap(CAP_SETUID
) > 0)
1144 test(m
, "exec-ambientcapabilities-dynuser.service", can_unshare
? 0 : EXIT_NAMESPACE
, CLD_EXITED
);
1146 if (!check_nobody_user_and_group()) {
1147 log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__
);
1151 if (!STR_IN_SET(NOBODY_USER_NAME
, "nobody", "nfsnobody")) {
1152 log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME
, __func__
);
1156 test(m
, "exec-ambientcapabilities-" NOBODY_USER_NAME
".service", 0, CLD_EXITED
);
1157 test(m
, "exec-ambientcapabilities-merge-" NOBODY_USER_NAME
".service", 0, CLD_EXITED
);
1160 static void test_exec_privatenetwork(Manager
*m
) {
1163 if (!have_net_dummy
)
1164 return (void)log_notice("Skipping %s, dummy network interface not available", __func__
);
1166 if (MANAGER_IS_USER(m
) && !have_userns_privileges())
1167 return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__
);
1169 r
= find_executable("ip", NULL
);
1171 log_notice_errno(r
, "Skipping %s, could not find ip binary: %m", __func__
);
1175 test(m
, "exec-privatenetwork-yes-privatemounts-no.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_NETWORK
: EXIT_FAILURE
, CLD_EXITED
);
1176 test(m
, "exec-privatenetwork-yes-privatemounts-yes.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_NETWORK
: EXIT_NAMESPACE
, CLD_EXITED
);
1179 static void test_exec_networknamespacepath(Manager
*m
) {
1182 if (!have_net_dummy
)
1183 return (void)log_notice("Skipping %s, dummy network interface not available", __func__
);
1186 return (void)log_notice("Skipping %s, network namespace not available", __func__
);
1188 if (MANAGER_IS_USER(m
) && !have_userns_privileges())
1189 return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__
);
1191 r
= find_executable("ip", NULL
);
1193 log_notice_errno(r
, "Skipping %s, could not find ip binary: %m", __func__
);
1197 test(m
, "exec-networknamespacepath-privatemounts-no.service", MANAGER_IS_SYSTEM(m
) ? EXIT_SUCCESS
: EXIT_FAILURE
, CLD_EXITED
);
1198 test(m
, "exec-networknamespacepath-privatemounts-yes.service", can_unshare
? EXIT_SUCCESS
: MANAGER_IS_SYSTEM(m
) ? EXIT_FAILURE
: EXIT_NAMESPACE
, CLD_EXITED
);
1201 static void test_exec_oomscoreadjust(Manager
*m
) {
1202 test(m
, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED
);
1204 if (detect_container() > 0) {
1205 log_notice("Testing in container, skipping remaining tests in %s", __func__
);
1208 test(m
, "exec-oomscoreadjust-negative.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_FAILURE
, CLD_EXITED
);
1211 static void test_exec_ioschedulingclass(Manager
*m
) {
1212 test(m
, "exec-ioschedulingclass-none.service", 0, CLD_EXITED
);
1213 test(m
, "exec-ioschedulingclass-idle.service", 0, CLD_EXITED
);
1214 test(m
, "exec-ioschedulingclass-best-effort.service", 0, CLD_EXITED
);
1216 if (detect_container() > 0) {
1217 log_notice("Testing in container, skipping remaining tests in %s", __func__
);
1220 test(m
, "exec-ioschedulingclass-realtime.service", MANAGER_IS_SYSTEM(m
) ? 0 : EXIT_IOPRIO
, CLD_EXITED
);
1223 static void test_exec_unsetenvironment(Manager
*m
) {
1224 test(m
, "exec-unsetenvironment.service", 0, CLD_EXITED
);
1227 static void test_exec_specifier(Manager
*m
) {
1228 test(m
, "exec-specifier.service", 0, CLD_EXITED
);
1229 if (MANAGER_IS_SYSTEM(m
))
1230 test(m
, "exec-specifier-system.service", 0, CLD_EXITED
);
1232 test(m
, "exec-specifier-user.service", 0, CLD_EXITED
);
1233 test(m
, "exec-specifier@foo-bar.service", 0, CLD_EXITED
);
1234 test(m
, "exec-specifier-interpolation.service", 0, CLD_EXITED
);
1237 static void test_exec_standardinput(Manager
*m
) {
1238 test(m
, "exec-standardinput-data.service", 0, CLD_EXITED
);
1239 test(m
, "exec-standardinput-file.service", 0, CLD_EXITED
);
1240 test(m
, "exec-standardinput-file-cat.service", 0, CLD_EXITED
);
1243 static void test_exec_standardoutput(Manager
*m
) {
1244 test(m
, "exec-standardoutput-file.service", 0, CLD_EXITED
);
1247 static void test_exec_standardoutput_append(Manager
*m
) {
1248 test(m
, "exec-standardoutput-append.service", 0, CLD_EXITED
);
1251 static void test_exec_standardoutput_truncate(Manager
*m
) {
1252 test(m
, "exec-standardoutput-truncate.service", 0, CLD_EXITED
);
1255 static void test_exec_condition(Manager
*m
) {
1256 test_service(m
, "exec-condition-failed.service", SERVICE_FAILURE_EXIT_CODE
);
1257 test_service(m
, "exec-condition-skip.service", SERVICE_SKIP_CONDITION
);
1260 static void test_exec_umask_namespace(Manager
*m
) {
1261 /* exec-specifier-credentials-dir.service creates /run/credentials and enables implicit
1262 * InaccessiblePath= for the directory for all later services with mount namespace. */
1263 if (!is_inaccessible_available()) {
1264 log_notice("Testing without inaccessible, skipping %s", __func__
);
1267 test(m
, "exec-umask-namespace.service", can_unshare
? 0 : MANAGER_IS_SYSTEM(m
) ? EXIT_NAMESPACE
: EXIT_GROUP
, CLD_EXITED
);
1270 typedef struct test_entry
{
1275 #define entry(x) {x, #x}
1277 static void run_tests(RuntimeScope scope
, char **patterns
) {
1278 _cleanup_(rm_rf_physical_and_freep
) char *runtime_dir
= NULL
;
1279 _cleanup_free_
char *unit_paths
= NULL
;
1280 _cleanup_(manager_freep
) Manager
*m
= NULL
;
1281 usec_t start
, finish
;
1284 static const test_entry tests
[] = {
1285 entry(test_exec_basic
),
1286 entry(test_exec_ambientcapabilities
),
1287 entry(test_exec_bindpaths
),
1288 entry(test_exec_capabilityboundingset
),
1289 entry(test_exec_condition
),
1290 entry(test_exec_cpuaffinity
),
1291 entry(test_exec_credentials
),
1292 entry(test_exec_dynamicuser
),
1293 entry(test_exec_environment
),
1294 entry(test_exec_environmentfile
),
1295 entry(test_exec_execsearchpath
),
1296 entry(test_exec_execsearchpath_environment
),
1297 entry(test_exec_execsearchpath_environment_files
),
1298 entry(test_exec_execsearchpath_passenvironment
),
1299 entry(test_exec_execsearchpath_specifier
),
1300 entry(test_exec_group
),
1301 entry(test_exec_ignoresigpipe
),
1302 entry(test_exec_inaccessiblepaths
),
1303 entry(test_exec_ioschedulingclass
),
1304 entry(test_exec_mount_apivfs
),
1305 entry(test_exec_networknamespacepath
),
1306 entry(test_exec_noexecpaths
),
1307 entry(test_exec_oomscoreadjust
),
1308 entry(test_exec_passenvironment
),
1309 entry(test_exec_personality
),
1310 entry(test_exec_privatedevices
),
1311 entry(test_exec_privatenetwork
),
1312 entry(test_exec_privatetmp
),
1313 entry(test_exec_protecthome
),
1314 entry(test_exec_protectkernelmodules
),
1315 entry(test_exec_readonlypaths
),
1316 entry(test_exec_readwritepaths
),
1317 entry(test_exec_restrictnamespaces
),
1318 entry(test_exec_runtimedirectory
),
1319 entry(test_exec_specifier
),
1320 entry(test_exec_standardinput
),
1321 entry(test_exec_standardoutput
),
1322 entry(test_exec_standardoutput_append
),
1323 entry(test_exec_standardoutput_truncate
),
1324 entry(test_exec_supplementarygroups
),
1325 entry(test_exec_systemcallerrornumber
),
1326 entry(test_exec_systemcallfilter
),
1327 entry(test_exec_systemcallfilter_system
),
1328 entry(test_exec_temporaryfilesystem
),
1329 entry(test_exec_umask
),
1330 entry(test_exec_umask_namespace
),
1331 entry(test_exec_unsetenvironment
),
1332 entry(test_exec_user
),
1333 entry(test_exec_workingdirectory
),
1337 assert_se(unsetenv("USER") == 0);
1338 assert_se(unsetenv("LOGNAME") == 0);
1339 assert_se(unsetenv("SHELL") == 0);
1340 assert_se(unsetenv("HOME") == 0);
1341 assert_se(unsetenv("TMPDIR") == 0);
1343 /* Unset VARx, especially, VAR1, VAR2 and VAR3, which are used in the PassEnvironment test cases,
1344 * otherwise (and if they are present in the environment), `manager_default_environment` will copy
1345 * them into the default environment which is passed to each created job, which will make the tests
1346 * that expect those not to be present to fail. */
1347 assert_se(unsetenv("VAR1") == 0);
1348 assert_se(unsetenv("VAR2") == 0);
1349 assert_se(unsetenv("VAR3") == 0);
1350 assert_se(unsetenv("VAR4") == 0);
1351 assert_se(unsetenv("VAR5") == 0);
1353 assert_se(runtime_dir
= setup_fake_runtime_dir());
1354 assert_se(user_runtime_unit_dir
= path_join(runtime_dir
, "systemd/user"));
1355 assert_se(unit_paths
= strjoin(PRIVATE_UNIT_DIR
, ":", user_runtime_unit_dir
));
1356 assert_se(set_unit_path(unit_paths
) >= 0);
1358 r
= manager_new(scope
, MANAGER_TEST_RUN_BASIC
, &m
);
1359 if (manager_errno_skip_test(r
))
1360 return (void) log_tests_skipped_errno(r
, "manager_new");
1363 m
->defaults
.std_output
= EXEC_OUTPUT_NULL
; /* don't rely on host journald */
1364 assert_se(manager_startup(m
, NULL
, NULL
, NULL
) >= 0);
1366 /* Uncomment below if you want to make debugging logs stored to journal. */
1367 //manager_override_log_target(m, LOG_TARGET_AUTO);
1368 //manager_override_log_level(m, LOG_DEBUG);
1370 /* Measure and print the time that it takes to run tests, excluding startup of the manager object,
1371 * to try and measure latency of spawning services */
1373 start
= now(CLOCK_MONOTONIC
);
1375 for (const test_entry
*test
= tests
; test
->f
; test
++)
1376 if (strv_fnmatch_or_empty(patterns
, test
->name
, FNM_NOESCAPE
))
1379 log_info("Skipping %s because it does not match any pattern.", test
->name
);
1381 finish
= now(CLOCK_MONOTONIC
);
1383 log_info("ran %u tests with %s manager + unshare=%s in: %s",
1385 scope
== RUNTIME_SCOPE_SYSTEM
? "system" : "user",
1386 yes_no(can_unshare
),
1387 FORMAT_TIMESPAN(finish
- start
, USEC_PER_MSEC
));
1390 static int prepare_ns(const char *process_name
) {
1393 r
= safe_fork(process_name
,
1394 FORK_RESET_SIGNALS
|
1395 FORK_CLOSE_ALL_FDS
|
1396 FORK_DEATHSIG_SIGTERM
|
1405 _cleanup_free_
char *unit_dir
= NULL
;
1407 /* Make "/" read-only. */
1408 assert_se(mount_nofollow_verbose(LOG_DEBUG
, NULL
, "/", NULL
, MS_BIND
|MS_REMOUNT
|MS_RDONLY
, NULL
) >= 0);
1410 /* Creating a new user namespace in the above means all MS_SHARED mounts become MS_SLAVE.
1411 * Let's put them back to MS_SHARED here, since that's what we want as defaults. (This will
1412 * not reconnect propagation, but simply create new peer groups for all our mounts). */
1413 assert_se(mount_follow_verbose(LOG_DEBUG
, NULL
, "/", NULL
, MS_SHARED
|MS_REC
, NULL
) >= 0);
1415 assert_se(mkdir_p(PRIVATE_UNIT_DIR
, 0755) >= 0);
1416 assert_se(mount_nofollow_verbose(LOG_DEBUG
, "tmpfs", PRIVATE_UNIT_DIR
, "tmpfs", MS_NOSUID
|MS_NODEV
, NULL
) >= 0);
1418 /* Copy unit files to make them accessible even when unprivileged. */
1419 assert_se(get_testdata_dir("test-execute/", &unit_dir
) >= 0);
1420 assert_se(copy_directory_at(AT_FDCWD
, unit_dir
, AT_FDCWD
, PRIVATE_UNIT_DIR
, COPY_MERGE_EMPTY
) >= 0);
1422 /* Mount tmpfs on the following directories to make not StateDirectory= or friends disturb the host. */
1423 FOREACH_STRING(p
, "/dev/shm", "/root", "/tmp", "/var/tmp", "/var/lib")
1424 assert_se(mount_nofollow_verbose(LOG_DEBUG
, "tmpfs", p
, "tmpfs", MS_NOSUID
|MS_NODEV
, NULL
) >= 0);
1426 /* Prepare credstore like tmpfiles.d/credstore.conf for LoadCredential= tests. */
1427 FOREACH_STRING(p
, "/run/credstore", "/run/credstore.encrypted") {
1428 assert_se(mkdir_p(p
, 0) >= 0);
1429 assert_se(mount_nofollow_verbose(LOG_DEBUG
, "tmpfs", p
, "tmpfs", MS_NOSUID
|MS_NODEV
, "mode=0000") >= 0);
1432 assert_se(write_string_file("/run/credstore/test-execute.load-credential", "foo", WRITE_STRING_FILE_CREATE
) >= 0);
1438 TEST(run_tests_root
) {
1439 _cleanup_strv_free_
char **filters
= NULL
;
1441 if (!have_namespaces())
1442 return (void) log_tests_skipped("unshare() is disabled");
1444 /* safe_fork() clears saved_argv in the child process. Let's copy it. */
1445 assert_se(filters
= strv_copy(strv_skip(saved_argv
, 1)));
1447 if (prepare_ns("(test-execute-root)") == 0) {
1449 run_tests(RUNTIME_SCOPE_SYSTEM
, filters
);
1450 _exit(EXIT_SUCCESS
);
1454 TEST(run_tests_without_unshare
) {
1455 if (!have_namespaces()) {
1456 /* unshare() is already filtered. */
1457 can_unshare
= false;
1458 run_tests(RUNTIME_SCOPE_SYSTEM
, strv_skip(saved_argv
, 1));
1463 _cleanup_strv_free_
char **filters
= NULL
;
1466 /* The following tests are for 1beab8b0d0ff2d7d1436b52d4a0c3d56dc908962. */
1467 if (!is_seccomp_available())
1468 return (void) log_tests_skipped("Seccomp not available, cannot run unshare() filtered tests");
1470 /* safe_fork() clears saved_argv in the child process. Let's copy it. */
1471 assert_se(filters
= strv_copy(strv_skip(saved_argv
, 1)));
1473 if (prepare_ns("(test-execute-without-unshare)") == 0) {
1474 _cleanup_hashmap_free_ Hashmap
*s
= NULL
;
1476 r
= seccomp_syscall_resolve_name("unshare");
1477 assert_se(r
!= __NR_SCMP_ERROR
);
1478 assert_se(hashmap_ensure_put(&s
, NULL
, UINT32_TO_PTR(r
+ 1), INT_TO_PTR(-1)) >= 0);
1479 assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW
, s
, SCMP_ACT_ERRNO(EOPNOTSUPP
), true) >= 0);
1481 /* Check unshare() is actually filtered. */
1482 assert_se(unshare(CLONE_NEWNS
) < 0);
1483 assert_se(errno
== EOPNOTSUPP
);
1485 can_unshare
= false;
1486 run_tests(RUNTIME_SCOPE_SYSTEM
, filters
);
1487 _exit(EXIT_SUCCESS
);
1490 log_tests_skipped("Built without seccomp support, cannot run unshare() filtered tests");
1494 TEST(run_tests_unprivileged
) {
1495 _cleanup_strv_free_
char **filters
= NULL
;
1497 if (!have_namespaces())
1498 return (void) log_tests_skipped("unshare() is disabled");
1500 /* safe_fork() clears saved_argv in the child process. Let's copy it. */
1501 assert_se(filters
= strv_copy(strv_skip(saved_argv
, 1)));
1503 if (prepare_ns("(test-execute-unprivileged)") == 0) {
1504 assert_se(capability_bounding_set_drop(0, /* right_now = */ true) >= 0);
1506 can_unshare
= false;
1507 run_tests(RUNTIME_SCOPE_USER
, filters
);
1508 _exit(EXIT_SUCCESS
);
1512 static int intro(void) {
1513 #if HAS_FEATURE_ADDRESS_SANITIZER
1514 if (strstr_ptr(ci_environment(), "travis") || strstr_ptr(ci_environment(), "github-actions"))
1515 return log_tests_skipped("Running on Travis CI/GH Actions under ASan, see https://github.com/systemd/systemd/issues/10696");
1517 /* It is needed otherwise cgroup creation fails */
1518 if (geteuid() != 0 || have_effective_cap(CAP_SYS_ADMIN
) <= 0)
1519 return log_tests_skipped("not privileged");
1521 if (enter_cgroup_subroot(NULL
) == -ENOMEDIUM
)
1522 return log_tests_skipped("cgroupfs not available");
1524 if (path_is_read_only_fs("/sys") > 0)
1525 return log_tests_skipped("/sys is mounted read-only");
1527 /* Create dummy network interface for testing PrivateNetwork=yes */
1528 have_net_dummy
= system("ip link add dummy-test-exec type dummy") == 0;
1530 if (have_net_dummy
) {
1531 /* Create a network namespace and a dummy interface in it for NetworkNamespacePath= */
1532 have_netns
= system("ip netns add test-execute-netns") == 0;
1533 have_netns
= have_netns
&& system("ip netns exec test-execute-netns ip link add dummy-test-ns type dummy") == 0;
1536 return EXIT_SUCCESS
;
1539 static int outro(void) {
1540 if (have_net_dummy
) {
1541 (void) system("ip link del dummy-test-exec");
1542 (void) system("ip netns del test-execute-netns");
1545 (void) rmdir(PRIVATE_UNIT_DIR
);
1547 return EXIT_SUCCESS
;
1550 DEFINE_TEST_MAIN_FULL(LOG_DEBUG
, intro
, outro
);