diff options
Diffstat (limited to '')
| -rw-r--r-- | src/test/test-execute.c | 966 |
1 files changed, 966 insertions, 0 deletions
diff --git a/src/test/test-execute.c b/src/test/test-execute.c new file mode 100644 index 0000000..3b6a4be --- /dev/null +++ b/src/test/test-execute.c @@ -0,0 +1,966 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <stdio.h> +#include <sys/prctl.h> +#include <sys/types.h> + +#include "capability-util.h" +#include "cpu-set-util.h" +#include "errno-list.h" +#include "fileio.h" +#include "fs-util.h" +#include "macro.h" +#include "manager.h" +#include "missing_prctl.h" +#include "mkdir.h" +#include "path-util.h" +#include "rm-rf.h" +#if HAVE_SECCOMP +#include "seccomp-util.h" +#endif +#include "service.h" +#include "stat-util.h" +#include "tests.h" +#include "unit.h" +#include "user-util.h" +#include "util.h" +#include "virt.h" + +static bool can_unshare; + +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, 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: exit code %d, expected %d", + file, line, func, + unit->id, + service->main_exec_status.code, code_expected); + abort(); + } + + if (service->main_exec_status.status != status_expected) { + log_error("%s:%u:%s: %s: exit status %d, expected %d", + file, line, func, unit->id, + 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: service end result %s, expected %s", + file, line, func, + unit->id, + 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(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) { + const char *p; + + 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 _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); + assert_se(unit_start(unit) >= 0); + check_main_result(file, line, func, m, unit, status_expected, code_expected); +} +#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) >= 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_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_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); +#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); + + test(m, "exec-privatetmp-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED); + test(m, "exec-privatetmp-no.service", 0, CLD_EXITED); + test(m, "exec-privatetmp-disabled-by-prefix.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED); + + 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; + } + + test(m, "exec-privatedevices-yes.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED); + test(m, "exec-privatedevices-no.service", 0, CLD_EXITED); + test(m, "exec-privatedevices-disabled-by-prefix.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED); + test(m, "exec-privatedevices-yes-with-group.service", can_unshare ? 0 : EXIT_FAILURE, 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; + } + + test(m, "exec-privatedevices-yes-capability-mknod.service", 0, CLD_EXITED); + test(m, "exec-privatedevices-no-capability-mknod.service", 0, CLD_EXITED); + test(m, "exec-privatedevices-yes-capability-sys-rawio.service", 0, CLD_EXITED); + test(m, "exec-privatedevices-no-capability-sys-rawio.service", 0, 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", 0, CLD_EXITED); + test(m, "exec-protectkernelmodules-yes-capabilities.service", 0, CLD_EXITED); + test(m, "exec-protectkernelmodules-yes-mount-propagation.service", can_unshare ? 0 : EXIT_FAILURE, CLD_EXITED); +} + +static void test_exec_readonlypaths(Manager *m) { + + test(m, "exec-readonlypaths-simple.service", can_unshare ? 0 : EXIT_FAILURE, 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 : EXIT_FAILURE, 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 : EXIT_FAILURE, 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 : EXIT_FAILURE, CLD_EXITED); +} + +static void test_exec_inaccessiblepaths(Manager *m) { + + if (!is_inaccessible_available()) { + log_notice("Testing without inaccessible, skipping %s", __func__); + return; + } + + test(m, "exec-inaccessiblepaths-sys.service", can_unshare ? 0 : EXIT_FAILURE, 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 : EXIT_FAILURE, CLD_EXITED); +} + +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-failing.service", SIGSYS, CLD_KILLED); + test(m, "exec-systemcallfilter-failing2.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-override-error-action.service", SIGSYS, CLD_KILLED); + test(m, "exec-systemcallfilter-override-error-action2.service", errno_from_name("EILSEQ"), 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", 0, 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", 0, CLD_EXITED); +#endif +} + +static void test_exec_user(Manager *m) { + test(m, "exec-user.service", 0, 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", 0, CLD_EXITED); +} + +static void test_exec_group(Manager *m) { + test(m, "exec-group.service", 0, 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", 0, CLD_EXITED); +} + +static void test_exec_supplementarygroups(Manager *m) { + test(m, "exec-supplementarygroups.service", 0, CLD_EXITED); + test(m, "exec-supplementarygroups-single-group.service", 0, CLD_EXITED); + test(m, "exec-supplementarygroups-single-group-user.service", 0, CLD_EXITED); + test(m, "exec-supplementarygroups-multiple-groups-default-group-user.service", 0, CLD_EXITED); + test(m, "exec-supplementarygroups-multiple-groups-withgid.service", 0, CLD_EXITED); + test(m, "exec-supplementarygroups-multiple-groups-withuid.service", 0, 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; + } + + test(m, "exec-dynamicuser-fixeduser.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED); + if (check_user_has_group_with_same_name("adm")) + test(m, "exec-dynamicuser-fixeduser-adm.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED); + if (check_user_has_group_with_same_name("games")) + test(m, "exec-dynamicuser-fixeduser-games.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED); + test(m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED); + test(m, "exec-dynamicuser-supplementarygroups.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED); + test(m, "exec-dynamicuser-statedir.service", can_unshare ? 0 : EXIT_NAMESPACE, 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", can_unshare ? 0 : EXIT_NAMESPACE, 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", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED); + test(m, "exec-dynamicuser-runtimedirectory2.service", can_unshare ? 0 : EXIT_NAMESPACE, CLD_EXITED); + test(m, "exec-dynamicuser-runtimedirectory3.service", can_unshare ? 0 : EXIT_NAMESPACE, 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) { + test(m, "exec-umask-default.service", 0, CLD_EXITED); + test(m, "exec-umask-0177.service", 0, CLD_EXITED); +} + +static void test_exec_runtimedirectory(Manager *m) { + test(m, "exec-runtimedirectory.service", 0, CLD_EXITED); + test(m, "exec-runtimedirectory-mode.service", 0, CLD_EXITED); + test(m, "exec-runtimedirectory-owner.service", 0, 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", 0, 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) { + test(m, "exec-basic.service", 0, CLD_EXITED); +} + +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 (!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; + + 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.service", can_unshare ? 0 : EXIT_NETWORK, 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", 0, 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", 0, 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); + 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_condition(Manager *m) { + test_service(m, "exec-condition-failed.service", SERVICE_FAILURE_EXIT_CODE); + test_service(m, "exec-condition-skip.service", SERVICE_SKIP_CONDITION); +} + +typedef struct test_entry { + test_function_t f; + const char *name; +} test_entry; + +#define entry(x) {x, #x} + +static int run_tests(UnitFileScope scope, const test_entry tests[], char **patterns) { + _cleanup_(manager_freep) Manager *m = NULL; + int r; + + assert_se(tests); + + r = manager_new(scope, MANAGER_TEST_RUN_BASIC, &m); + m->default_std_output = EXEC_OUTPUT_NULL; /* don't rely on host journald */ + if (manager_errno_skip_test(r)) + return log_tests_skipped_errno(r, "manager_new"); + assert_se(r >= 0); + assert_se(manager_startup(m, NULL, NULL) >= 0); + + 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); + + return 0; +} + +int main(int argc, char *argv[]) { + _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL; + + static const test_entry user_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_environment), + entry(test_exec_environmentfile), + entry(test_exec_group), + entry(test_exec_ignoresigpipe), + entry(test_exec_inaccessiblepaths), + entry(test_exec_ioschedulingclass), + 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_standardinput), + entry(test_exec_standardoutput), + entry(test_exec_standardoutput_append), + entry(test_exec_supplementarygroups), + entry(test_exec_systemcallerrornumber), + entry(test_exec_systemcallfilter), + entry(test_exec_temporaryfilesystem), + entry(test_exec_umask), + entry(test_exec_unsetenvironment), + entry(test_exec_user), + entry(test_exec_workingdirectory), + {}, + }; + static const test_entry system_tests[] = { + entry(test_exec_dynamicuser), + entry(test_exec_specifier), + entry(test_exec_systemcallfilter_system), + {}, + }; + int r; + + test_setup_logging(LOG_DEBUG); + +#if HAS_FEATURE_ADDRESS_SANITIZER + if (strstr_ptr(ci_environment(), "travis")) { + log_notice("Running on TravisCI under ASan, skipping, see https://github.com/systemd/systemd/issues/10696"); + return EXIT_TEST_SKIP; + } +#endif + + 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); + + can_unshare = have_namespaces(); + + /* It is needed otherwise cgroup creation fails */ + if (getuid() != 0) + return log_tests_skipped("not root"); + + r = enter_cgroup_subroot(NULL); + if (r == -ENOMEDIUM) + return log_tests_skipped("cgroupfs not available"); + + _cleanup_free_ char *unit_dir = NULL; + assert_se(get_testdata_dir("test-execute/", &unit_dir) >= 0); + assert_se(set_unit_path(unit_dir) >= 0); + assert_se(runtime_dir = setup_fake_runtime_dir()); + + /* Unset 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); + + r = run_tests(UNIT_FILE_USER, user_tests, argv + 1); + if (r != 0) + return r; + + r = run_tests(UNIT_FILE_SYSTEM, system_tests, argv + 1); + if (r != 0) + return r; + +#if HAVE_SECCOMP + /* The following tests are for 1beab8b0d0ff2d7d1436b52d4a0c3d56dc908962. */ + if (!is_seccomp_available()) { + log_notice("Seccomp not available, skipping unshare() filtered tests."); + return 0; + } + + _cleanup_hashmap_free_ Hashmap *s = NULL; + assert_se(s = hashmap_new(NULL)); + r = seccomp_syscall_resolve_name("unshare"); + assert_se(r != __NR_SCMP_ERROR); + assert_se(hashmap_put(s, 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); + assert_se(unshare(CLONE_NEWNS) < 0); + assert_se(errno == EOPNOTSUPP); + + can_unshare = false; + + r = run_tests(UNIT_FILE_USER, user_tests, argv + 1); + if (r != 0) + return r; + + return run_tests(UNIT_FILE_SYSTEM, system_tests, argv + 1); +#else + return 0; +#endif +} |