summaryrefslogtreecommitdiffstats
path: root/src/test/test-execute.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/test/test-execute.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/test-execute.c')
-rw-r--r--src/test/test-execute.c1550
1 files changed, 1550 insertions, 0 deletions
diff --git a/src/test/test-execute.c b/src/test/test-execute.c
new file mode 100644
index 0000000..4f6ad5d
--- /dev/null
+++ b/src/test/test-execute.c
@@ -0,0 +1,1550 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <stdio.h>
+#include <sys/mount.h>
+#include <sys/prctl.h>
+#include <sys/types.h>
+
+#include "sd-event.h"
+
+#include "capability-util.h"
+#include "cpu-set-util.h"
+#include "copy.h"
+#include "dropin.h"
+#include "errno-list.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "macro.h"
+#include "manager.h"
+#include "missing_prctl.h"
+#include "mkdir.h"
+#include "mount-util.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "rm-rf.h"
+#include "seccomp-util.h"
+#include "service.h"
+#include "signal-util.h"
+#include "static-destruct.h"
+#include "stat-util.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+#include "unit.h"
+#include "user-util.h"
+#include "virt.h"
+
+#define PRIVATE_UNIT_DIR "/run/test-execute-unit-dir"
+
+static char *user_runtime_unit_dir = NULL;
+static bool can_unshare;
+static bool have_net_dummy;
+static bool have_netns;
+static unsigned n_ran_tests = 0;
+
+STATIC_DESTRUCTOR_REGISTER(user_runtime_unit_dir, freep);
+
+typedef void (*test_function_t)(Manager *m);
+
+static int cld_dumped_to_killed(int code) {
+ /* Depending on the system, seccomp version, … some signals might result in dumping, others in plain
+ * killing. Let's ignore the difference here, and map both cases to CLD_KILLED */
+ return code == CLD_DUMPED ? CLD_KILLED : code;
+}
+
+static void wait_for_service_finish(Manager *m, Unit *unit) {
+ Service *service = NULL;
+ usec_t ts;
+ usec_t timeout = 2 * USEC_PER_MINUTE;
+
+ assert_se(m);
+ assert_se(unit);
+
+ service = SERVICE(unit);
+ printf("%s\n", unit->id);
+ exec_context_dump(&service->exec_context, stdout, "\t");
+ ts = now(CLOCK_MONOTONIC);
+ while (!IN_SET(service->state, SERVICE_DEAD, SERVICE_FAILED)) {
+ int r;
+ usec_t n;
+
+ r = sd_event_run(m->event, 100 * USEC_PER_MSEC);
+ assert_se(r >= 0);
+
+ n = now(CLOCK_MONOTONIC);
+ if (ts + timeout < n) {
+ log_error("Test timeout when testing %s", unit->id);
+ r = unit_kill(unit, KILL_ALL, SIGKILL, SI_USER, 0, NULL);
+ if (r < 0)
+ log_error_errno(r, "Failed to kill %s: %m", unit->id);
+ exit(EXIT_FAILURE);
+ }
+ }
+}
+
+static void check_main_result(const char *file, unsigned line, const char *func,
+ Manager *m, Unit *unit, int status_expected, int code_expected) {
+ Service *service = NULL;
+
+ assert_se(m);
+ assert_se(unit);
+
+ wait_for_service_finish(m, unit);
+
+ service = SERVICE(unit);
+ exec_status_dump(&service->main_exec_status, stdout, "\t");
+
+ if (cld_dumped_to_killed(service->main_exec_status.code) != cld_dumped_to_killed(code_expected)) {
+ log_error("%s:%u:%s %s: can_unshare=%s: exit code %d, expected %d",
+ file, line, func, unit->id, yes_no(can_unshare),
+ service->main_exec_status.code, code_expected);
+ abort();
+ }
+
+ if (service->main_exec_status.status != status_expected) {
+ log_error("%s:%u:%s: %s: can_unshare=%s: exit status %d, expected %d",
+ file, line, func, unit->id, yes_no(can_unshare),
+ service->main_exec_status.status, status_expected);
+ abort();
+ }
+}
+
+static void check_service_result(const char *file, unsigned line, const char *func,
+ Manager *m, Unit *unit, ServiceResult result_expected) {
+ Service *service = NULL;
+
+ assert_se(m);
+ assert_se(unit);
+
+ wait_for_service_finish(m, unit);
+
+ service = SERVICE(unit);
+
+ if (service->result != result_expected) {
+ log_error("%s:%u:%s: %s: can_unshare=%s: service end result %s, expected %s",
+ file, line, func, unit->id, yes_no(can_unshare),
+ service_result_to_string(service->result),
+ service_result_to_string(result_expected));
+ abort();
+ }
+}
+
+static bool check_nobody_user_and_group(void) {
+ static int cache = -1;
+ struct passwd *p;
+ struct group *g;
+
+ if (cache >= 0)
+ return !!cache;
+
+ if (!synthesize_nobody())
+ goto invalid;
+
+ p = getpwnam(NOBODY_USER_NAME);
+ if (!p ||
+ !streq(p->pw_name, NOBODY_USER_NAME) ||
+ p->pw_uid != UID_NOBODY ||
+ p->pw_gid != GID_NOBODY)
+ goto invalid;
+
+ p = getpwuid(UID_NOBODY);
+ if (!p ||
+ !streq(p->pw_name, NOBODY_USER_NAME) ||
+ p->pw_uid != UID_NOBODY ||
+ p->pw_gid != GID_NOBODY)
+ goto invalid;
+
+ g = getgrnam(NOBODY_GROUP_NAME);
+ if (!g ||
+ !streq(g->gr_name, NOBODY_GROUP_NAME) ||
+ g->gr_gid != GID_NOBODY)
+ goto invalid;
+
+ g = getgrgid(GID_NOBODY);
+ if (!g ||
+ !streq(g->gr_name, NOBODY_GROUP_NAME) ||
+ g->gr_gid != GID_NOBODY)
+ goto invalid;
+
+ cache = 1;
+ return true;
+
+invalid:
+ cache = 0;
+ return false;
+}
+
+static bool check_user_has_group_with_same_name(const char *name) {
+ struct passwd *p;
+ struct group *g;
+
+ assert_se(name);
+
+ p = getpwnam(name);
+ if (!p ||
+ !streq(p->pw_name, name))
+ return false;
+
+ g = getgrgid(p->pw_gid);
+ if (!g ||
+ !streq(g->gr_name, name))
+ return false;
+
+ return true;
+}
+
+static bool is_inaccessible_available(void) {
+ FOREACH_STRING(p,
+ "/run/systemd/inaccessible/reg",
+ "/run/systemd/inaccessible/dir",
+ "/run/systemd/inaccessible/chr",
+ "/run/systemd/inaccessible/blk",
+ "/run/systemd/inaccessible/fifo",
+ "/run/systemd/inaccessible/sock")
+ if (access(p, F_OK) < 0)
+ return false;
+
+ return true;
+}
+
+static void start_parent_slices(Unit *unit) {
+ Unit *slice;
+
+ slice = UNIT_GET_SLICE(unit);
+ if (slice) {
+ start_parent_slices(slice);
+ int r = unit_start(slice, NULL);
+ assert_se(r >= 0 || r == -EALREADY);
+ }
+}
+
+static bool have_userns_privileges(void) {
+ pid_t pid;
+ int r;
+
+ r = safe_fork("(sd-test-check-userns)",
+ FORK_RESET_SIGNALS |
+ FORK_CLOSE_ALL_FDS |
+ FORK_DEATHSIG_SIGKILL,
+ &pid);
+ assert(r >= 0);
+ if (r == 0) {
+ /* Keep CAP_SYS_ADMIN if we have it to ensure we give an
+ * accurate result to the caller. Some kernels have a
+ * kernel.unprivileged_userns_clone sysctl which can be
+ * configured to make CLONE_NEWUSER require CAP_SYS_ADMIN.
+ * Additionally, AppArmor may restrict unprivileged user
+ * namespace creation. */
+ r = capability_bounding_set_drop(UINT64_C(1) << CAP_SYS_ADMIN, /* right_now = */ true);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to drop capabilities: %m");
+ _exit(2);
+ }
+
+ r = RET_NERRNO(unshare(CLONE_NEWUSER));
+ if (r < 0 && !ERRNO_IS_NEG_PRIVILEGE(r))
+ log_debug_errno(r, "Failed to create user namespace: %m");
+
+ _exit(r >= 0 ? EXIT_SUCCESS : ERRNO_IS_NEG_PRIVILEGE(r) ? EXIT_FAILURE : 2);
+ }
+
+ /* The exit code records the result of the check:
+ * EXIT_SUCCESS => we can use user namespaces
+ * EXIT_FAILURE => we can NOT use user namespaces
+ * 2 => some other error occurred */
+ r = wait_for_terminate_and_check("(sd-test-check-userns)", pid, 0);
+ if (!IN_SET(r, EXIT_SUCCESS, EXIT_FAILURE))
+ log_debug("Failed to check if user namespaces can be used, assuming not.");
+
+ return r == EXIT_SUCCESS;
+}
+
+static void _test(const char *file, unsigned line, const char *func,
+ Manager *m, const char *unit_name, int status_expected, int code_expected) {
+ Unit *unit;
+
+ assert_se(unit_name);
+
+ assert_se(manager_load_startable_unit_or_warn(m, unit_name, NULL, &unit) >= 0);
+ /* We need to start the slices as well otherwise the slice cgroups might be pruned
+ * in on_cgroup_empty_event. */
+ start_parent_slices(unit);
+ assert_se(unit_start(unit, NULL) >= 0);
+ check_main_result(file, line, func, m, unit, status_expected, code_expected);
+
+ ++n_ran_tests;
+}
+#define test(m, unit_name, status_expected, code_expected) \
+ _test(PROJECT_FILE, __LINE__, __func__, m, unit_name, status_expected, code_expected)
+
+static void _test_service(const char *file, unsigned line, const char *func,
+ Manager *m, const char *unit_name, ServiceResult result_expected) {
+ Unit *unit;
+
+ assert_se(unit_name);
+
+ assert_se(manager_load_startable_unit_or_warn(m, unit_name, NULL, &unit) >= 0);
+ assert_se(unit_start(unit, NULL) >= 0);
+ check_service_result(file, line, func, m, unit, result_expected);
+}
+#define test_service(m, unit_name, result_expected) \
+ _test_service(PROJECT_FILE, __LINE__, __func__, m, unit_name, result_expected)
+
+static void test_exec_bindpaths(Manager *m) {
+ assert_se(mkdir_p("/tmp/test-exec-bindpaths", 0755) >= 0);
+ assert_se(mkdir_p("/tmp/test-exec-bindreadonlypaths", 0755) >= 0);
+
+ test(m, "exec-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+
+ (void) rm_rf("/tmp/test-exec-bindpaths", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/tmp/test-exec-bindreadonlypaths", REMOVE_ROOT|REMOVE_PHYSICAL);
+}
+
+static void test_exec_cpuaffinity(Manager *m) {
+ _cleanup_(cpu_set_reset) CPUSet c = {};
+
+ assert_se(cpu_set_realloc(&c, 8192) >= 0); /* just allocate the maximum possible size */
+ assert_se(sched_getaffinity(0, c.allocated, c.set) >= 0);
+
+ if (!CPU_ISSET_S(0, c.allocated, c.set)) {
+ log_notice("Cannot use CPU 0, skipping %s", __func__);
+ return;
+ }
+
+ test(m, "exec-cpuaffinity1.service", 0, CLD_EXITED);
+ test(m, "exec-cpuaffinity2.service", 0, CLD_EXITED);
+
+ if (!CPU_ISSET_S(1, c.allocated, c.set) ||
+ !CPU_ISSET_S(2, c.allocated, c.set)) {
+ log_notice("Cannot use CPU 1 or 2, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ test(m, "exec-cpuaffinity3.service", 0, CLD_EXITED);
+}
+
+static void test_exec_credentials(Manager *m) {
+ test(m, "exec-set-credential.service", 0, CLD_EXITED);
+ test(m, "exec-load-credential.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_CREDENTIALS, CLD_EXITED);
+ test(m, "exec-credentials-dir-specifier.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_CREDENTIALS, CLD_EXITED);
+}
+
+static void test_exec_workingdirectory(Manager *m) {
+ assert_se(mkdir_p("/tmp/test-exec_workingdirectory", 0755) >= 0);
+
+ test(m, "exec-workingdirectory.service", 0, CLD_EXITED);
+ test(m, "exec-workingdirectory-trailing-dot.service", 0, CLD_EXITED);
+
+ (void) rm_rf("/tmp/test-exec_workingdirectory", REMOVE_ROOT|REMOVE_PHYSICAL);
+}
+
+static void test_exec_execsearchpath(Manager *m) {
+ assert_se(mkdir_p("/tmp/test-exec_execsearchpath", 0755) >= 0);
+
+ assert_se(copy_file("/bin/ls", "/tmp/test-exec_execsearchpath/ls_temp", 0, 0777, COPY_REPLACE) >= 0);
+
+ test(m, "exec-execsearchpath.service", 0, CLD_EXITED);
+
+ assert_se(rm_rf("/tmp/test-exec_execsearchpath", REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
+
+ test(m, "exec-execsearchpath.service", EXIT_EXEC, CLD_EXITED);
+}
+
+static void test_exec_execsearchpath_specifier(Manager *m) {
+ test(m, "exec-execsearchpath-unit-specifier.service", 0, CLD_EXITED);
+}
+
+static void test_exec_execsearchpath_environment(Manager *m) {
+ test(m, "exec-execsearchpath-environment.service", 0, CLD_EXITED);
+ test(m, "exec-execsearchpath-environment-path-set.service", 0, CLD_EXITED);
+}
+
+static void test_exec_execsearchpath_environment_files(Manager *m) {
+ static const char path_not_set[] =
+ "VAR1='word1 word2'\n"
+ "VAR2=word3 \n"
+ "# comment1\n"
+ "\n"
+ "; comment2\n"
+ " ; # comment3\n"
+ "line without an equal\n"
+ "VAR3='$word 5 6'\n"
+ "VAR4='new\nline'\n"
+ "VAR5=password\\with\\backslashes";
+
+ static const char path_set[] =
+ "VAR1='word1 word2'\n"
+ "VAR2=word3 \n"
+ "# comment1\n"
+ "\n"
+ "; comment2\n"
+ " ; # comment3\n"
+ "line without an equal\n"
+ "VAR3='$word 5 6'\n"
+ "VAR4='new\nline'\n"
+ "VAR5=password\\with\\backslashes\n"
+ "PATH=/usr";
+
+ int r;
+
+ r = write_string_file("/tmp/test-exec_execsearchpath_environmentfile.conf", path_not_set, WRITE_STRING_FILE_CREATE);
+
+ assert_se(r == 0);
+
+ test(m, "exec-execsearchpath-environmentfile.service", 0, CLD_EXITED);
+
+ (void) unlink("/tmp/test-exec_environmentfile.conf");
+
+
+ r = write_string_file("/tmp/test-exec_execsearchpath_environmentfile-set.conf", path_set, WRITE_STRING_FILE_CREATE);
+
+ assert_se(r == 0);
+
+ test(m, "exec-execsearchpath-environmentfile-set.service", 0, CLD_EXITED);
+
+ (void) unlink("/tmp/test-exec_environmentfile-set.conf");
+}
+
+static void test_exec_execsearchpath_passenvironment(Manager *m) {
+ assert_se(setenv("VAR1", "word1 word2", 1) == 0);
+ assert_se(setenv("VAR2", "word3", 1) == 0);
+ assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
+ assert_se(setenv("VAR4", "new\nline", 1) == 0);
+ assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
+
+ test(m, "exec-execsearchpath-passenvironment.service", 0, CLD_EXITED);
+
+ assert_se(setenv("PATH", "/usr", 1) == 0);
+ test(m, "exec-execsearchpath-passenvironment-set.service", 0, CLD_EXITED);
+
+ assert_se(unsetenv("VAR1") == 0);
+ assert_se(unsetenv("VAR2") == 0);
+ assert_se(unsetenv("VAR3") == 0);
+ assert_se(unsetenv("VAR4") == 0);
+ assert_se(unsetenv("VAR5") == 0);
+ assert_se(unsetenv("PATH") == 0);
+}
+
+static void test_exec_personality(Manager *m) {
+#if defined(__x86_64__)
+ test(m, "exec-personality-x86-64.service", 0, CLD_EXITED);
+
+#elif defined(__s390__)
+ test(m, "exec-personality-s390.service", 0, CLD_EXITED);
+
+#elif defined(__powerpc64__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+ test(m, "exec-personality-ppc64.service", 0, CLD_EXITED);
+# else
+ test(m, "exec-personality-ppc64le.service", 0, CLD_EXITED);
+# endif
+
+#elif defined(__aarch64__)
+ test(m, "exec-personality-aarch64.service", 0, CLD_EXITED);
+
+#elif defined(__i386__)
+ test(m, "exec-personality-x86.service", 0, CLD_EXITED);
+#elif defined(__loongarch_lp64)
+ test(m, "exec-personality-loongarch64.service", 0, CLD_EXITED);
+#else
+ log_notice("Unknown personality, skipping %s", __func__);
+#endif
+}
+
+static void test_exec_ignoresigpipe(Manager *m) {
+ test(m, "exec-ignoresigpipe-yes.service", 0, CLD_EXITED);
+ test(m, "exec-ignoresigpipe-no.service", SIGPIPE, CLD_KILLED);
+}
+
+static void test_exec_privatetmp(Manager *m) {
+ assert_se(touch("/tmp/test-exec_privatetmp") >= 0);
+
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges()) {
+ test(m, "exec-privatetmp-yes.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-privatetmp-disabled-by-prefix.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ }
+
+ test(m, "exec-privatetmp-no.service", 0, CLD_EXITED);
+
+ (void) unlink("/tmp/test-exec_privatetmp");
+}
+
+static void test_exec_privatedevices(Manager *m) {
+ int r;
+
+ if (detect_container() > 0) {
+ log_notice("Testing in container, skipping %s", __func__);
+ return;
+ }
+ if (!is_inaccessible_available()) {
+ log_notice("Testing without inaccessible, skipping %s", __func__);
+ return;
+ }
+
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges()) {
+ test(m, "exec-privatedevices-yes.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ if (access("/dev/kmsg", F_OK) >= 0)
+ test(m, "exec-privatedevices-bind.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-privatedevices-disabled-by-prefix.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-privatedevices-yes-with-group.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ }
+
+ test(m, "exec-privatedevices-no.service", 0, CLD_EXITED);
+
+ /* We use capsh to test if the capabilities are
+ * properly set, so be sure that it exists */
+ r = find_executable("capsh", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Could not find capsh binary, skipping remaining tests in %s: %m", __func__);
+ return;
+ }
+
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges()) {
+ test(m, "exec-privatedevices-yes-capability-mknod.service", can_unshare || MANAGER_IS_SYSTEM(m) ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-privatedevices-yes-capability-sys-rawio.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ }
+
+ test(m, "exec-privatedevices-no-capability-mknod.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_FAILURE, CLD_EXITED);
+ test(m, "exec-privatedevices-no-capability-sys-rawio.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_FAILURE, CLD_EXITED);
+}
+
+static void test_exec_protecthome(Manager *m) {
+ if (!can_unshare) {
+ log_notice("Cannot reliably unshare, skipping %s", __func__);
+ return;
+ }
+
+ test(m, "exec-protecthome-tmpfs-vs-protectsystem-strict.service", 0, CLD_EXITED);
+}
+
+static void test_exec_protectkernelmodules(Manager *m) {
+ int r;
+
+ if (detect_container() > 0) {
+ log_notice("Testing in container, skipping %s", __func__);
+ return;
+ }
+ if (!is_inaccessible_available()) {
+ log_notice("Testing without inaccessible, skipping %s", __func__);
+ return;
+ }
+
+ r = find_executable("capsh", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
+ return;
+ }
+
+ test(m, "exec-protectkernelmodules-no-capabilities.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_FAILURE, CLD_EXITED);
+
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges()) {
+ test(m, "exec-protectkernelmodules-yes-capabilities.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-protectkernelmodules-yes-mount-propagation.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ }
+}
+
+static void test_exec_readonlypaths(Manager *m) {
+
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges())
+ test(m, "exec-readonlypaths-simple.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+
+ if (path_is_read_only_fs("/var") > 0) {
+ log_notice("Directory /var is readonly, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ test(m, "exec-readonlypaths.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-readonlypaths-with-bindpaths.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-readonlypaths-mount-propagation.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+}
+
+static void test_exec_readwritepaths(Manager *m) {
+
+ if (path_is_read_only_fs("/") > 0) {
+ log_notice("Root directory is readonly, skipping %s", __func__);
+ return;
+ }
+
+ test(m, "exec-readwritepaths-mount-propagation.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+}
+
+static void test_exec_inaccessiblepaths(Manager *m) {
+
+ if (!is_inaccessible_available()) {
+ log_notice("Testing without inaccessible, skipping %s", __func__);
+ return;
+ }
+
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges())
+ test(m, "exec-inaccessiblepaths-sys.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+
+ if (path_is_read_only_fs("/") > 0) {
+ log_notice("Root directory is readonly, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ test(m, "exec-inaccessiblepaths-mount-propagation.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+}
+
+static int on_spawn_io(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ char **result = userdata;
+ char buf[4096];
+ ssize_t l;
+
+ assert_se(s);
+ assert_se(fd >= 0);
+
+ l = read(fd, buf, sizeof(buf) - 1);
+ if (l < 0) {
+ if (errno == EAGAIN)
+ goto reenable;
+
+ return 0;
+ }
+ if (l == 0)
+ return 0;
+
+ buf[l] = '\0';
+ if (result)
+ assert_se(strextend(result, buf));
+ else
+ log_error("ldd: %s", buf);
+
+reenable:
+ /* Re-enable the event source if we did not encounter EOF */
+ assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0);
+ return 0;
+}
+
+static int on_spawn_timeout(sd_event_source *s, uint64_t usec, void *userdata) {
+ pid_t *pid = userdata;
+
+ assert_se(pid);
+
+ (void) kill(*pid, SIGKILL);
+
+ return 1;
+}
+
+static int on_spawn_sigchld(sd_event_source *s, const siginfo_t *si, void *userdata) {
+ int ret = -EIO;
+
+ assert_se(si);
+
+ if (si->si_code == CLD_EXITED)
+ ret = si->si_status;
+
+ sd_event_exit(sd_event_source_get_event(s), ret);
+ return 1;
+}
+
+static int find_libraries(const char *exec, char ***ret) {
+ _cleanup_(sd_event_unrefp) sd_event *e = NULL;
+ _cleanup_(sd_event_source_unrefp) sd_event_source *sigchld_source = NULL;
+ _cleanup_(sd_event_source_unrefp) sd_event_source *stdout_source = NULL;
+ _cleanup_(sd_event_source_unrefp) sd_event_source *stderr_source = NULL;
+ _cleanup_close_pair_ int outpipe[2] = EBADF_PAIR, errpipe[2] = EBADF_PAIR;
+ _cleanup_strv_free_ char **libraries = NULL;
+ _cleanup_free_ char *result = NULL;
+ pid_t pid;
+ int r;
+
+ assert_se(exec);
+ assert_se(ret);
+
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
+
+ assert_se(pipe2(outpipe, O_NONBLOCK|O_CLOEXEC) == 0);
+ assert_se(pipe2(errpipe, O_NONBLOCK|O_CLOEXEC) == 0);
+
+ r = safe_fork_full("(spawn-ldd)",
+ (int[]) { -EBADF, outpipe[1], errpipe[1] },
+ NULL, 0,
+ FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG_SIGTERM|FORK_REARRANGE_STDIO|FORK_LOG, &pid);
+ assert_se(r >= 0);
+ if (r == 0) {
+ execlp("ldd", "ldd", exec, NULL);
+ _exit(EXIT_FAILURE);
+ }
+
+ outpipe[1] = safe_close(outpipe[1]);
+ errpipe[1] = safe_close(errpipe[1]);
+
+ assert_se(sd_event_new(&e) >= 0);
+
+ assert_se(sd_event_add_time_relative(e, NULL, CLOCK_MONOTONIC,
+ 10 * USEC_PER_SEC, USEC_PER_SEC, on_spawn_timeout, &pid) >= 0);
+ assert_se(sd_event_add_io(e, &stdout_source, outpipe[0], EPOLLIN, on_spawn_io, &result) >= 0);
+ assert_se(sd_event_source_set_enabled(stdout_source, SD_EVENT_ONESHOT) >= 0);
+ assert_se(sd_event_add_io(e, &stderr_source, errpipe[0], EPOLLIN, on_spawn_io, NULL) >= 0);
+ assert_se(sd_event_source_set_enabled(stderr_source, SD_EVENT_ONESHOT) >= 0);
+ assert_se(sd_event_add_child(e, &sigchld_source, pid, WEXITED, on_spawn_sigchld, NULL) >= 0);
+ /* SIGCHLD should be processed after IO is complete */
+ assert_se(sd_event_source_set_priority(sigchld_source, SD_EVENT_PRIORITY_NORMAL + 1) >= 0);
+
+ assert_se(sd_event_loop(e) >= 0);
+
+ _cleanup_strv_free_ char **v = NULL;
+ assert_se(strv_split_newlines_full(&v, result, 0) >= 0);
+
+ STRV_FOREACH(q, v) {
+ _cleanup_free_ char *word = NULL;
+ const char *p = *q;
+
+ r = extract_first_word(&p, &word, NULL, 0);
+ assert_se(r >= 0);
+ if (r == 0)
+ continue;
+
+ if (path_is_absolute(word)) {
+ assert_se(strv_consume(&libraries, TAKE_PTR(word)) >= 0);
+ continue;
+ }
+
+ word = mfree(word);
+ r = extract_first_word(&p, &word, NULL, 0);
+ assert_se(r >= 0);
+ if (r == 0)
+ continue;
+
+ if (!streq_ptr(word, "=>"))
+ continue;
+
+ word = mfree(word);
+ r = extract_first_word(&p, &word, NULL, 0);
+ assert_se(r >= 0);
+ if (r == 0)
+ continue;
+
+ if (path_is_absolute(word)) {
+ assert_se(strv_consume(&libraries, TAKE_PTR(word)) >= 0);
+ continue;
+ }
+ }
+
+ *ret = TAKE_PTR(libraries);
+ return 0;
+}
+
+static void test_exec_mount_apivfs(Manager *m) {
+ _cleanup_free_ char *fullpath_touch = NULL, *fullpath_test = NULL, *data = NULL;
+ _cleanup_strv_free_ char **libraries = NULL, **libraries_test = NULL;
+ int r;
+
+ assert_se(user_runtime_unit_dir);
+
+ r = find_executable("ldd", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find 'ldd' command: %m", __func__);
+ return;
+ }
+ r = find_executable("touch", &fullpath_touch);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find 'touch' command: %m", __func__);
+ return;
+ }
+ r = find_executable("test", &fullpath_test);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find 'test' command: %m", __func__);
+ return;
+ }
+
+ if (MANAGER_IS_USER(m) && !have_userns_privileges())
+ return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__);
+
+ assert_se(find_libraries(fullpath_touch, &libraries) >= 0);
+ assert_se(find_libraries(fullpath_test, &libraries_test) >= 0);
+ assert_se(strv_extend_strv(&libraries, libraries_test, true) >= 0);
+
+ assert_se(strextend(&data, "[Service]\n"));
+ assert_se(strextend(&data, "ExecStart=", fullpath_touch, " /aaa\n"));
+ assert_se(strextend(&data, "ExecStart=", fullpath_test, " -f /aaa\n"));
+ assert_se(strextend(&data, "BindReadOnlyPaths=", fullpath_touch, "\n"));
+ assert_se(strextend(&data, "BindReadOnlyPaths=", fullpath_test, "\n"));
+
+ STRV_FOREACH(p, libraries)
+ assert_se(strextend(&data, "BindReadOnlyPaths=", *p, "\n"));
+
+ assert_se(write_drop_in(user_runtime_unit_dir, "exec-mount-apivfs-no.service", 10, "bind-mount", data) >= 0);
+
+ assert_se(mkdir_p("/tmp/test-exec-mount-apivfs-no/root", 0755) >= 0);
+
+ test(m, "exec-mount-apivfs-no.service", can_unshare || !MANAGER_IS_SYSTEM(m) ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+
+ (void) rm_rf("/tmp/test-exec-mount-apivfs-no/root", REMOVE_ROOT|REMOVE_PHYSICAL);
+}
+
+static void test_exec_noexecpaths(Manager *m) {
+
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges())
+ test(m, "exec-noexecpaths-simple.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+ else
+ return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__);
+}
+
+static void test_exec_temporaryfilesystem(Manager *m) {
+
+ test(m, "exec-temporaryfilesystem-options.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-temporaryfilesystem-ro.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-temporaryfilesystem-rw.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-temporaryfilesystem-usr.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+}
+
+static void test_exec_systemcallfilter(Manager *m) {
+#if HAVE_SECCOMP
+ int r;
+
+ if (!is_seccomp_available()) {
+ log_notice("Seccomp not available, skipping %s", __func__);
+ return;
+ }
+
+ test(m, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED);
+ test(m, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED);
+ test(m, "exec-systemcallfilter-not-failing3.service", 0, CLD_EXITED);
+ test(m, "exec-systemcallfilter-failing.service", SIGSYS, CLD_KILLED);
+ test(m, "exec-systemcallfilter-failing2.service", SIGSYS, CLD_KILLED);
+ test(m, "exec-systemcallfilter-failing3.service", SIGSYS, CLD_KILLED);
+
+ r = find_executable("python3", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping remaining tests in %s, could not find python3 binary: %m", __func__);
+ return;
+ }
+
+ test(m, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED);
+ test(m, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED);
+ test(m, "exec-systemcallfilter-with-errno-multi.service", errno_from_name("EILSEQ"), CLD_EXITED);
+ test(m, "exec-systemcallfilter-with-errno-in-allow-list.service", errno_from_name("EILSEQ"), CLD_EXITED);
+ test(m, "exec-systemcallfilter-override-error-action.service", SIGSYS, CLD_KILLED);
+ test(m, "exec-systemcallfilter-override-error-action2.service", errno_from_name("EILSEQ"), CLD_EXITED);
+
+ test(m, "exec-systemcallfilter-nonewprivileges.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+ test(m, "exec-systemcallfilter-nonewprivileges-protectclock.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+
+ r = find_executable("capsh", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
+ return;
+ }
+
+ test(m, "exec-systemcallfilter-nonewprivileges-bounding1.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+ test(m, "exec-systemcallfilter-nonewprivileges-bounding2.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+#endif
+}
+
+static void test_exec_systemcallerrornumber(Manager *m) {
+#if HAVE_SECCOMP
+ int r;
+
+ if (!is_seccomp_available()) {
+ log_notice("Seccomp not available, skipping %s", __func__);
+ return;
+ }
+
+ r = find_executable("python3", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find python3 binary: %m", __func__);
+ return;
+ }
+
+ test(m, "exec-systemcallerrornumber-name.service", errno_from_name("EACCES"), CLD_EXITED);
+ test(m, "exec-systemcallerrornumber-number.service", 255, CLD_EXITED);
+#endif
+}
+
+static void test_exec_restrictnamespaces(Manager *m) {
+#if HAVE_SECCOMP
+ if (!is_seccomp_available()) {
+ log_notice("Seccomp not available, skipping %s", __func__);
+ return;
+ }
+
+ test(m, "exec-restrictnamespaces-no.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
+ test(m, "exec-restrictnamespaces-yes.service", 1, CLD_EXITED);
+ test(m, "exec-restrictnamespaces-mnt.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
+ test(m, "exec-restrictnamespaces-mnt-deny-list.service", 1, CLD_EXITED);
+ test(m, "exec-restrictnamespaces-merge-and.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
+ test(m, "exec-restrictnamespaces-merge-or.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
+ test(m, "exec-restrictnamespaces-merge-all.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED);
+#endif
+}
+
+static void test_exec_systemcallfilter_system(Manager *m) {
+/* Skip this particular test case when running under ASan, as
+ * LSan intermittently segfaults when accessing memory right
+ * after the test finishes. Generally, ASan & LSan don't like
+ * the seccomp stuff.
+ */
+#if HAVE_SECCOMP && !HAS_FEATURE_ADDRESS_SANITIZER
+ if (!is_seccomp_available()) {
+ log_notice("Seccomp not available, skipping %s", __func__);
+ return;
+ }
+
+ test(m, "exec-systemcallfilter-system-user.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+
+ if (!check_nobody_user_and_group()) {
+ log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
+ log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
+ return;
+ }
+
+ test(m, "exec-systemcallfilter-system-user-" NOBODY_USER_NAME ".service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+#endif
+}
+
+static void test_exec_user(Manager *m) {
+ test(m, "exec-user.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+
+ if (!check_nobody_user_and_group()) {
+ log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
+ log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
+ return;
+ }
+
+ test(m, "exec-user-" NOBODY_USER_NAME ".service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+}
+
+static void test_exec_group(Manager *m) {
+ test(m, "exec-group.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+
+ if (!check_nobody_user_and_group()) {
+ log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
+ log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
+ return;
+ }
+
+ test(m, "exec-group-" NOBODY_GROUP_NAME ".service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+}
+
+static void test_exec_supplementarygroups(Manager *m) {
+ int status = MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP;
+ test(m, "exec-supplementarygroups.service", status, CLD_EXITED);
+ test(m, "exec-supplementarygroups-single-group.service", status, CLD_EXITED);
+ test(m, "exec-supplementarygroups-single-group-user.service", status, CLD_EXITED);
+ test(m, "exec-supplementarygroups-multiple-groups-default-group-user.service", status, CLD_EXITED);
+ test(m, "exec-supplementarygroups-multiple-groups-withgid.service", status, CLD_EXITED);
+ test(m, "exec-supplementarygroups-multiple-groups-withuid.service", status, CLD_EXITED);
+}
+
+static char* private_directory_bad(Manager *m) {
+ /* This mirrors setup_exec_directory(). */
+
+ for (ExecDirectoryType dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) {
+ _cleanup_free_ char *p = NULL;
+ struct stat st;
+
+ assert_se(p = path_join(m->prefix[dt], "private"));
+
+ if (stat(p, &st) >= 0 &&
+ (st.st_mode & (S_IRWXG|S_IRWXO)))
+ return TAKE_PTR(p);
+ }
+
+ return NULL;
+}
+
+static void test_exec_dynamicuser(Manager *m) {
+ _cleanup_free_ char *bad = private_directory_bad(m);
+ if (bad) {
+ log_warning("%s: %s has bad permissions, skipping test.", __func__, bad);
+ return;
+ }
+
+ if (strstr_ptr(ci_environment(), "github-actions")) {
+ log_notice("%s: skipping test on GH Actions because of systemd/systemd#10337", __func__);
+ return;
+ }
+
+ int status = can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_NAMESPACE : EXIT_GROUP;
+
+ test(m, "exec-dynamicuser-fixeduser.service", status, CLD_EXITED);
+ if (check_user_has_group_with_same_name("adm"))
+ test(m, "exec-dynamicuser-fixeduser-adm.service", status, CLD_EXITED);
+ if (check_user_has_group_with_same_name("games"))
+ test(m, "exec-dynamicuser-fixeduser-games.service", status, CLD_EXITED);
+ test(m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", status, CLD_EXITED);
+ test(m, "exec-dynamicuser-supplementarygroups.service", status, CLD_EXITED);
+ test(m, "exec-dynamicuser-statedir.service", status, CLD_EXITED);
+
+ (void) rm_rf("/var/lib/quux", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/waldo", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/private/quux", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/private/waldo", REMOVE_ROOT|REMOVE_PHYSICAL);
+
+ test(m, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED);
+ test(m, "exec-dynamicuser-statedir-migrate-step2.service", status, CLD_EXITED);
+ test(m, "exec-dynamicuser-statedir-migrate-step1.service", 0, CLD_EXITED);
+
+ (void) rm_rf("/var/lib/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/private/test-dynamicuser-migrate", REMOVE_ROOT|REMOVE_PHYSICAL);
+ (void) rm_rf("/var/lib/private/test-dynamicuser-migrate2", REMOVE_ROOT|REMOVE_PHYSICAL);
+
+ test(m, "exec-dynamicuser-runtimedirectory1.service", status, CLD_EXITED);
+ test(m, "exec-dynamicuser-runtimedirectory2.service", status, CLD_EXITED);
+ test(m, "exec-dynamicuser-runtimedirectory3.service", status, CLD_EXITED);
+}
+
+static void test_exec_environment(Manager *m) {
+ test(m, "exec-environment-no-substitute.service", 0, CLD_EXITED);
+ test(m, "exec-environment.service", 0, CLD_EXITED);
+ test(m, "exec-environment-multiple.service", 0, CLD_EXITED);
+ test(m, "exec-environment-empty.service", 0, CLD_EXITED);
+}
+
+static void test_exec_environmentfile(Manager *m) {
+ static const char e[] =
+ "VAR1='word1 word2'\n"
+ "VAR2=word3 \n"
+ "# comment1\n"
+ "\n"
+ "; comment2\n"
+ " ; # comment3\n"
+ "line without an equal\n"
+ "VAR3='$word 5 6'\n"
+ "VAR4='new\nline'\n"
+ "VAR5=password\\with\\backslashes";
+ int r;
+
+ r = write_string_file("/tmp/test-exec_environmentfile.conf", e, WRITE_STRING_FILE_CREATE);
+ assert_se(r == 0);
+
+ test(m, "exec-environmentfile.service", 0, CLD_EXITED);
+
+ (void) unlink("/tmp/test-exec_environmentfile.conf");
+}
+
+static void test_exec_passenvironment(Manager *m) {
+ /* test-execute runs under MANAGER_USER which, by default, forwards all
+ * variables present in the environment, but only those that are
+ * present _at the time it is created_!
+ *
+ * So these PassEnvironment checks are still expected to work, since we
+ * are ensuring the variables are not present at manager creation (they
+ * are unset explicitly in main) and are only set here.
+ *
+ * This is still a good approximation of how a test for MANAGER_SYSTEM
+ * would work.
+ */
+ assert_se(setenv("VAR1", "word1 word2", 1) == 0);
+ assert_se(setenv("VAR2", "word3", 1) == 0);
+ assert_se(setenv("VAR3", "$word 5 6", 1) == 0);
+ assert_se(setenv("VAR4", "new\nline", 1) == 0);
+ assert_se(setenv("VAR5", "passwordwithbackslashes", 1) == 0);
+ test(m, "exec-passenvironment.service", 0, CLD_EXITED);
+ test(m, "exec-passenvironment-repeated.service", 0, CLD_EXITED);
+ test(m, "exec-passenvironment-empty.service", 0, CLD_EXITED);
+ assert_se(unsetenv("VAR1") == 0);
+ assert_se(unsetenv("VAR2") == 0);
+ assert_se(unsetenv("VAR3") == 0);
+ assert_se(unsetenv("VAR4") == 0);
+ assert_se(unsetenv("VAR5") == 0);
+ test(m, "exec-passenvironment-absent.service", 0, CLD_EXITED);
+}
+
+static void test_exec_umask(Manager *m) {
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges()) {
+ test(m, "exec-umask-default.service", can_unshare || MANAGER_IS_SYSTEM(m) ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ test(m, "exec-umask-0177.service", can_unshare || MANAGER_IS_SYSTEM(m) ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ } else
+ return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__);
+}
+
+static void test_exec_runtimedirectory(Manager *m) {
+ (void) rm_rf("/run/test-exec_runtimedirectory2", REMOVE_ROOT|REMOVE_PHYSICAL);
+ test(m, "exec-runtimedirectory.service", 0, CLD_EXITED);
+ (void) rm_rf("/run/test-exec_runtimedirectory2", REMOVE_ROOT|REMOVE_PHYSICAL);
+
+ test(m, "exec-runtimedirectory-mode.service", 0, CLD_EXITED);
+ test(m, "exec-runtimedirectory-owner.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+
+ if (!check_nobody_user_and_group()) {
+ log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ if (!STR_IN_SET(NOBODY_GROUP_NAME, "nobody", "nfsnobody", "nogroup")) {
+ log_notice("Unsupported nobody group name '%s', skipping remaining tests in %s", NOBODY_GROUP_NAME, __func__);
+ return;
+ }
+
+ test(m, "exec-runtimedirectory-owner-" NOBODY_GROUP_NAME ".service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_GROUP, CLD_EXITED);
+}
+
+static void test_exec_capabilityboundingset(Manager *m) {
+ int r;
+
+ r = find_executable("capsh", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find capsh binary: %m", __func__);
+ return;
+ }
+
+ if (have_effective_cap(CAP_CHOWN) <= 0 ||
+ have_effective_cap(CAP_FOWNER) <= 0 ||
+ have_effective_cap(CAP_KILL) <= 0) {
+ log_notice("Skipping %s, this process does not have enough capabilities", __func__);
+ return;
+ }
+
+ test(m, "exec-capabilityboundingset-simple.service", 0, CLD_EXITED);
+ test(m, "exec-capabilityboundingset-reset.service", 0, CLD_EXITED);
+ test(m, "exec-capabilityboundingset-merge.service", 0, CLD_EXITED);
+ test(m, "exec-capabilityboundingset-invert.service", 0, CLD_EXITED);
+}
+
+static void test_exec_basic(Manager *m) {
+ if (MANAGER_IS_SYSTEM(m) || have_userns_privileges())
+ test(m, "exec-basic.service", can_unshare || MANAGER_IS_SYSTEM(m) ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+ else
+ return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__);
+}
+
+static void test_exec_ambientcapabilities(Manager *m) {
+ int r;
+
+ /* Check if the kernel has support for ambient capabilities. Run
+ * the tests only if that's the case. Clearing all ambient
+ * capabilities is fine, since we are expecting them to be unset
+ * in the first place for the tests. */
+ r = prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0);
+ if (r < 0 && IN_SET(errno, EINVAL, EOPNOTSUPP, ENOSYS)) {
+ log_notice("Skipping %s, the kernel does not support ambient capabilities", __func__);
+ return;
+ }
+
+ if (have_effective_cap(CAP_CHOWN) <= 0 ||
+ have_effective_cap(CAP_NET_RAW) <= 0) {
+ log_notice("Skipping %s, this process does not have enough capabilities", __func__);
+ return;
+ }
+
+ test(m, "exec-ambientcapabilities.service", 0, CLD_EXITED);
+ test(m, "exec-ambientcapabilities-merge.service", 0, CLD_EXITED);
+
+ if (have_effective_cap(CAP_SETUID) > 0)
+ test(m, "exec-ambientcapabilities-dynuser.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED);
+
+ if (!check_nobody_user_and_group()) {
+ log_notice("nobody user/group is not synthesized or may conflict to other entries, skipping remaining tests in %s", __func__);
+ return;
+ }
+
+ if (!STR_IN_SET(NOBODY_USER_NAME, "nobody", "nfsnobody")) {
+ log_notice("Unsupported nobody user name '%s', skipping remaining tests in %s", NOBODY_USER_NAME, __func__);
+ return;
+ }
+
+ test(m, "exec-ambientcapabilities-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
+ test(m, "exec-ambientcapabilities-merge-" NOBODY_USER_NAME ".service", 0, CLD_EXITED);
+}
+
+static void test_exec_privatenetwork(Manager *m) {
+ int r;
+
+ if (!have_net_dummy)
+ return (void)log_notice("Skipping %s, dummy network interface not available", __func__);
+
+ if (MANAGER_IS_USER(m) && !have_userns_privileges())
+ return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__);
+
+ r = find_executable("ip", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find ip binary: %m", __func__);
+ return;
+ }
+
+ test(m, "exec-privatenetwork-yes-privatemounts-no.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_NETWORK : EXIT_FAILURE, CLD_EXITED);
+ test(m, "exec-privatenetwork-yes-privatemounts-yes.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_NETWORK : EXIT_NAMESPACE, CLD_EXITED);
+}
+
+static void test_exec_networknamespacepath(Manager *m) {
+ int r;
+
+ if (!have_net_dummy)
+ return (void)log_notice("Skipping %s, dummy network interface not available", __func__);
+
+ if (!have_netns)
+ return (void)log_notice("Skipping %s, network namespace not available", __func__);
+
+ if (MANAGER_IS_USER(m) && !have_userns_privileges())
+ return (void)log_notice("Skipping %s, do not have user namespace privileges", __func__);
+
+ r = find_executable("ip", NULL);
+ if (r < 0) {
+ log_notice_errno(r, "Skipping %s, could not find ip binary: %m", __func__);
+ return;
+ }
+
+ test(m, "exec-networknamespacepath-privatemounts-no.service", MANAGER_IS_SYSTEM(m) ? EXIT_SUCCESS : EXIT_FAILURE, CLD_EXITED);
+ test(m, "exec-networknamespacepath-privatemounts-yes.service", can_unshare ? EXIT_SUCCESS : MANAGER_IS_SYSTEM(m) ? EXIT_FAILURE : EXIT_NAMESPACE, CLD_EXITED);
+}
+
+static void test_exec_oomscoreadjust(Manager *m) {
+ test(m, "exec-oomscoreadjust-positive.service", 0, CLD_EXITED);
+
+ if (detect_container() > 0) {
+ log_notice("Testing in container, skipping remaining tests in %s", __func__);
+ return;
+ }
+ test(m, "exec-oomscoreadjust-negative.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_FAILURE, CLD_EXITED);
+}
+
+static void test_exec_ioschedulingclass(Manager *m) {
+ test(m, "exec-ioschedulingclass-none.service", 0, CLD_EXITED);
+ test(m, "exec-ioschedulingclass-idle.service", 0, CLD_EXITED);
+ test(m, "exec-ioschedulingclass-best-effort.service", 0, CLD_EXITED);
+
+ if (detect_container() > 0) {
+ log_notice("Testing in container, skipping remaining tests in %s", __func__);
+ return;
+ }
+ test(m, "exec-ioschedulingclass-realtime.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_IOPRIO, CLD_EXITED);
+}
+
+static void test_exec_unsetenvironment(Manager *m) {
+ test(m, "exec-unsetenvironment.service", 0, CLD_EXITED);
+}
+
+static void test_exec_specifier(Manager *m) {
+ test(m, "exec-specifier.service", 0, CLD_EXITED);
+ if (MANAGER_IS_SYSTEM(m))
+ test(m, "exec-specifier-system.service", 0, CLD_EXITED);
+ else
+ test(m, "exec-specifier-user.service", 0, CLD_EXITED);
+ test(m, "exec-specifier@foo-bar.service", 0, CLD_EXITED);
+ test(m, "exec-specifier-interpolation.service", 0, CLD_EXITED);
+}
+
+static void test_exec_standardinput(Manager *m) {
+ test(m, "exec-standardinput-data.service", 0, CLD_EXITED);
+ test(m, "exec-standardinput-file.service", 0, CLD_EXITED);
+ test(m, "exec-standardinput-file-cat.service", 0, CLD_EXITED);
+}
+
+static void test_exec_standardoutput(Manager *m) {
+ test(m, "exec-standardoutput-file.service", 0, CLD_EXITED);
+}
+
+static void test_exec_standardoutput_append(Manager *m) {
+ test(m, "exec-standardoutput-append.service", 0, CLD_EXITED);
+}
+
+static void test_exec_standardoutput_truncate(Manager *m) {
+ test(m, "exec-standardoutput-truncate.service", 0, CLD_EXITED);
+}
+
+static void test_exec_condition(Manager *m) {
+ test_service(m, "exec-condition-failed.service", SERVICE_FAILURE_EXIT_CODE);
+ test_service(m, "exec-condition-skip.service", SERVICE_SKIP_CONDITION);
+}
+
+static void test_exec_umask_namespace(Manager *m) {
+ /* exec-specifier-credentials-dir.service creates /run/credentials and enables implicit
+ * InaccessiblePath= for the directory for all later services with mount namespace. */
+ if (!is_inaccessible_available()) {
+ log_notice("Testing without inaccessible, skipping %s", __func__);
+ return;
+ }
+ test(m, "exec-umask-namespace.service", can_unshare ? 0 : MANAGER_IS_SYSTEM(m) ? EXIT_NAMESPACE : EXIT_GROUP, CLD_EXITED);
+}
+
+typedef struct test_entry {
+ test_function_t f;
+ const char *name;
+} test_entry;
+
+#define entry(x) {x, #x}
+
+static void run_tests(RuntimeScope scope, char **patterns) {
+ _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
+ _cleanup_free_ char *unit_paths = NULL;
+ _cleanup_(manager_freep) Manager *m = NULL;
+ usec_t start, finish;
+ int r;
+
+ static const test_entry tests[] = {
+ entry(test_exec_basic),
+ entry(test_exec_ambientcapabilities),
+ entry(test_exec_bindpaths),
+ entry(test_exec_capabilityboundingset),
+ entry(test_exec_condition),
+ entry(test_exec_cpuaffinity),
+ entry(test_exec_credentials),
+ entry(test_exec_dynamicuser),
+ entry(test_exec_environment),
+ entry(test_exec_environmentfile),
+ entry(test_exec_execsearchpath),
+ entry(test_exec_execsearchpath_environment),
+ entry(test_exec_execsearchpath_environment_files),
+ entry(test_exec_execsearchpath_passenvironment),
+ entry(test_exec_execsearchpath_specifier),
+ entry(test_exec_group),
+ entry(test_exec_ignoresigpipe),
+ entry(test_exec_inaccessiblepaths),
+ entry(test_exec_ioschedulingclass),
+ entry(test_exec_mount_apivfs),
+ entry(test_exec_networknamespacepath),
+ entry(test_exec_noexecpaths),
+ entry(test_exec_oomscoreadjust),
+ entry(test_exec_passenvironment),
+ entry(test_exec_personality),
+ entry(test_exec_privatedevices),
+ entry(test_exec_privatenetwork),
+ entry(test_exec_privatetmp),
+ entry(test_exec_protecthome),
+ entry(test_exec_protectkernelmodules),
+ entry(test_exec_readonlypaths),
+ entry(test_exec_readwritepaths),
+ entry(test_exec_restrictnamespaces),
+ entry(test_exec_runtimedirectory),
+ entry(test_exec_specifier),
+ entry(test_exec_standardinput),
+ entry(test_exec_standardoutput),
+ entry(test_exec_standardoutput_append),
+ entry(test_exec_standardoutput_truncate),
+ entry(test_exec_supplementarygroups),
+ entry(test_exec_systemcallerrornumber),
+ entry(test_exec_systemcallfilter),
+ entry(test_exec_systemcallfilter_system),
+ entry(test_exec_temporaryfilesystem),
+ entry(test_exec_umask),
+ entry(test_exec_umask_namespace),
+ entry(test_exec_unsetenvironment),
+ entry(test_exec_user),
+ entry(test_exec_workingdirectory),
+ {},
+ };
+
+ assert_se(unsetenv("USER") == 0);
+ assert_se(unsetenv("LOGNAME") == 0);
+ assert_se(unsetenv("SHELL") == 0);
+ assert_se(unsetenv("HOME") == 0);
+ assert_se(unsetenv("TMPDIR") == 0);
+
+ /* Unset VARx, especially, VAR1, VAR2 and VAR3, which are used in the PassEnvironment test cases,
+ * otherwise (and if they are present in the environment), `manager_default_environment` will copy
+ * them into the default environment which is passed to each created job, which will make the tests
+ * that expect those not to be present to fail. */
+ assert_se(unsetenv("VAR1") == 0);
+ assert_se(unsetenv("VAR2") == 0);
+ assert_se(unsetenv("VAR3") == 0);
+ assert_se(unsetenv("VAR4") == 0);
+ assert_se(unsetenv("VAR5") == 0);
+
+ assert_se(runtime_dir = setup_fake_runtime_dir());
+ assert_se(user_runtime_unit_dir = path_join(runtime_dir, "systemd/user"));
+ assert_se(unit_paths = strjoin(PRIVATE_UNIT_DIR, ":", user_runtime_unit_dir));
+ assert_se(set_unit_path(unit_paths) >= 0);
+
+ r = manager_new(scope, MANAGER_TEST_RUN_BASIC, &m);
+ if (manager_errno_skip_test(r))
+ return (void) log_tests_skipped_errno(r, "manager_new");
+ assert_se(r >= 0);
+
+ m->defaults.std_output = EXEC_OUTPUT_NULL; /* don't rely on host journald */
+ assert_se(manager_startup(m, NULL, NULL, NULL) >= 0);
+
+ /* Uncomment below if you want to make debugging logs stored to journal. */
+ //manager_override_log_target(m, LOG_TARGET_AUTO);
+ //manager_override_log_level(m, LOG_DEBUG);
+
+ /* Measure and print the time that it takes to run tests, excluding startup of the manager object,
+ * to try and measure latency of spawning services */
+ n_ran_tests = 0;
+ start = now(CLOCK_MONOTONIC);
+
+ for (const test_entry *test = tests; test->f; test++)
+ if (strv_fnmatch_or_empty(patterns, test->name, FNM_NOESCAPE))
+ test->f(m);
+ else
+ log_info("Skipping %s because it does not match any pattern.", test->name);
+
+ finish = now(CLOCK_MONOTONIC);
+
+ log_info("ran %u tests with %s manager + unshare=%s in: %s",
+ n_ran_tests,
+ scope == RUNTIME_SCOPE_SYSTEM ? "system" : "user",
+ yes_no(can_unshare),
+ FORMAT_TIMESPAN(finish - start, USEC_PER_MSEC));
+}
+
+static int prepare_ns(const char *process_name) {
+ int r;
+
+ r = safe_fork(process_name,
+ FORK_RESET_SIGNALS |
+ FORK_CLOSE_ALL_FDS |
+ FORK_DEATHSIG_SIGTERM |
+ FORK_WAIT |
+ FORK_REOPEN_LOG |
+ FORK_LOG |
+ FORK_NEW_MOUNTNS |
+ FORK_MOUNTNS_SLAVE,
+ NULL);
+ assert_se(r >= 0);
+ if (r == 0) {
+ _cleanup_free_ char *unit_dir = NULL;
+
+ /* Make "/" read-only. */
+ assert_se(mount_nofollow_verbose(LOG_DEBUG, NULL, "/", NULL, MS_BIND|MS_REMOUNT|MS_RDONLY, NULL) >= 0);
+
+ /* Creating a new user namespace in the above means all MS_SHARED mounts become MS_SLAVE.
+ * Let's put them back to MS_SHARED here, since that's what we want as defaults. (This will
+ * not reconnect propagation, but simply create new peer groups for all our mounts). */
+ assert_se(mount_follow_verbose(LOG_DEBUG, NULL, "/", NULL, MS_SHARED|MS_REC, NULL) >= 0);
+
+ assert_se(mkdir_p(PRIVATE_UNIT_DIR, 0755) >= 0);
+ assert_se(mount_nofollow_verbose(LOG_DEBUG, "tmpfs", PRIVATE_UNIT_DIR, "tmpfs", MS_NOSUID|MS_NODEV, NULL) >= 0);
+
+ /* Copy unit files to make them accessible even when unprivileged. */
+ assert_se(get_testdata_dir("test-execute/", &unit_dir) >= 0);
+ assert_se(copy_directory_at(AT_FDCWD, unit_dir, AT_FDCWD, PRIVATE_UNIT_DIR, COPY_MERGE_EMPTY) >= 0);
+
+ /* Mount tmpfs on the following directories to make not StateDirectory= or friends disturb the host. */
+ FOREACH_STRING(p, "/dev/shm", "/root", "/tmp", "/var/tmp", "/var/lib")
+ assert_se(mount_nofollow_verbose(LOG_DEBUG, "tmpfs", p, "tmpfs", MS_NOSUID|MS_NODEV, NULL) >= 0);
+
+ /* Prepare credstore like tmpfiles.d/credstore.conf for LoadCredential= tests. */
+ FOREACH_STRING(p, "/run/credstore", "/run/credstore.encrypted") {
+ assert_se(mkdir_p(p, 0) >= 0);
+ assert_se(mount_nofollow_verbose(LOG_DEBUG, "tmpfs", p, "tmpfs", MS_NOSUID|MS_NODEV, "mode=0000") >= 0);
+ }
+
+ assert_se(write_string_file("/run/credstore/test-execute.load-credential", "foo", WRITE_STRING_FILE_CREATE) >= 0);
+ }
+
+ return r;
+}
+
+TEST(run_tests_root) {
+ _cleanup_strv_free_ char **filters = NULL;
+
+ if (!have_namespaces())
+ return (void) log_tests_skipped("unshare() is disabled");
+
+ /* safe_fork() clears saved_argv in the child process. Let's copy it. */
+ assert_se(filters = strv_copy(strv_skip(saved_argv, 1)));
+
+ if (prepare_ns("(test-execute-root)") == 0) {
+ can_unshare = true;
+ run_tests(RUNTIME_SCOPE_SYSTEM, filters);
+ _exit(EXIT_SUCCESS);
+ }
+}
+
+TEST(run_tests_without_unshare) {
+ if (!have_namespaces()) {
+ /* unshare() is already filtered. */
+ can_unshare = false;
+ run_tests(RUNTIME_SCOPE_SYSTEM, strv_skip(saved_argv, 1));
+ return;
+ }
+
+#if HAVE_SECCOMP
+ _cleanup_strv_free_ char **filters = NULL;
+ int r;
+
+ /* The following tests are for 1beab8b0d0ff2d7d1436b52d4a0c3d56dc908962. */
+ if (!is_seccomp_available())
+ return (void) log_tests_skipped("Seccomp not available, cannot run unshare() filtered tests");
+
+ /* safe_fork() clears saved_argv in the child process. Let's copy it. */
+ assert_se(filters = strv_copy(strv_skip(saved_argv, 1)));
+
+ if (prepare_ns("(test-execute-without-unshare)") == 0) {
+ _cleanup_hashmap_free_ Hashmap *s = NULL;
+
+ r = seccomp_syscall_resolve_name("unshare");
+ assert_se(r != __NR_SCMP_ERROR);
+ assert_se(hashmap_ensure_put(&s, NULL, UINT32_TO_PTR(r + 1), INT_TO_PTR(-1)) >= 0);
+ assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, s, SCMP_ACT_ERRNO(EOPNOTSUPP), true) >= 0);
+
+ /* Check unshare() is actually filtered. */
+ assert_se(unshare(CLONE_NEWNS) < 0);
+ assert_se(errno == EOPNOTSUPP);
+
+ can_unshare = false;
+ run_tests(RUNTIME_SCOPE_SYSTEM, filters);
+ _exit(EXIT_SUCCESS);
+ }
+#else
+ log_tests_skipped("Built without seccomp support, cannot run unshare() filtered tests");
+#endif
+}
+
+TEST(run_tests_unprivileged) {
+ _cleanup_strv_free_ char **filters = NULL;
+
+ if (!have_namespaces())
+ return (void) log_tests_skipped("unshare() is disabled");
+
+ /* safe_fork() clears saved_argv in the child process. Let's copy it. */
+ assert_se(filters = strv_copy(strv_skip(saved_argv, 1)));
+
+ if (prepare_ns("(test-execute-unprivileged)") == 0) {
+ assert_se(capability_bounding_set_drop(0, /* right_now = */ true) >= 0);
+
+ can_unshare = false;
+ run_tests(RUNTIME_SCOPE_USER, filters);
+ _exit(EXIT_SUCCESS);
+ }
+}
+
+static int intro(void) {
+#if HAS_FEATURE_ADDRESS_SANITIZER
+ if (strstr_ptr(ci_environment(), "travis") || strstr_ptr(ci_environment(), "github-actions"))
+ return log_tests_skipped("Running on Travis CI/GH Actions under ASan, see https://github.com/systemd/systemd/issues/10696");
+#endif
+ /* It is needed otherwise cgroup creation fails */
+ if (geteuid() != 0 || have_effective_cap(CAP_SYS_ADMIN) <= 0)
+ return log_tests_skipped("not privileged");
+
+ if (enter_cgroup_subroot(NULL) == -ENOMEDIUM)
+ return log_tests_skipped("cgroupfs not available");
+
+ if (path_is_read_only_fs("/sys") > 0)
+ return log_tests_skipped("/sys is mounted read-only");
+
+ /* Create dummy network interface for testing PrivateNetwork=yes */
+ have_net_dummy = system("ip link add dummy-test-exec type dummy") == 0;
+
+ if (have_net_dummy) {
+ /* Create a network namespace and a dummy interface in it for NetworkNamespacePath= */
+ have_netns = system("ip netns add test-execute-netns") == 0;
+ have_netns = have_netns && system("ip netns exec test-execute-netns ip link add dummy-test-ns type dummy") == 0;
+ }
+
+ return EXIT_SUCCESS;
+}
+
+static int outro(void) {
+ if (have_net_dummy) {
+ (void) system("ip link del dummy-test-exec");
+ (void) system("ip netns del test-execute-netns");
+ }
+
+ (void) rmdir(PRIVATE_UNIT_DIR);
+
+ return EXIT_SUCCESS;
+}
+
+DEFINE_TEST_MAIN_FULL(LOG_DEBUG, intro, outro);