/* SPDX-License-Identifier: LGPL-2.1-or-later */ #include "alloc-util.h" #include "build.h" #include "cgroup-util.h" #include "dirent-util.h" #include "errno-util.h" #include "fd-util.h" #include "format-util.h" #include "parse-util.h" #include "proc-cmdline.h" #include "process-util.h" #include "special.h" #include "stat-util.h" #include "string-util.h" #include "strv.h" #include "tests.h" #include "user-util.h" #include "util.h" static void check_p_d_u(const char *path, int code, const char *result) { _cleanup_free_ char *unit = NULL; int r; r = cg_path_decode_unit(path, &unit); printf("%s: %s → %s %d expected %s %d\n", __func__, path, unit, r, strnull(result), code); assert_se(r == code); assert_se(streq_ptr(unit, result)); } static void test_path_decode_unit(void) { check_p_d_u("getty@tty2.service", 0, "getty@tty2.service"); check_p_d_u("getty@tty2.service/", 0, "getty@tty2.service"); check_p_d_u("getty@tty2.service/xxx", 0, "getty@tty2.service"); check_p_d_u("getty@.service/", -ENXIO, NULL); check_p_d_u("getty@.service", -ENXIO, NULL); check_p_d_u("getty.service", 0, "getty.service"); check_p_d_u("getty", -ENXIO, NULL); check_p_d_u("getty/waldo", -ENXIO, NULL); check_p_d_u("_cpu.service", 0, "cpu.service"); } static void check_p_g_u(const char *path, int code, const char *result) { _cleanup_free_ char *unit = NULL; int r; r = cg_path_get_unit(path, &unit); printf("%s: %s → %s %d expected %s %d\n", __func__, path, unit, r, strnull(result), code); assert_se(r == code); assert_se(streq_ptr(unit, result)); } static void test_path_get_unit(void) { check_p_g_u("/system.slice/foobar.service/sdfdsaf", 0, "foobar.service"); check_p_g_u("/system.slice/getty@tty5.service", 0, "getty@tty5.service"); check_p_g_u("/system.slice/getty@tty5.service/aaa/bbb", 0, "getty@tty5.service"); check_p_g_u("/system.slice/getty@tty5.service/", 0, "getty@tty5.service"); check_p_g_u("/system.slice/getty@tty6.service/tty5", 0, "getty@tty6.service"); check_p_g_u("sadfdsafsda", -ENXIO, NULL); check_p_g_u("/system.slice/getty####@tty6.service/xxx", -ENXIO, NULL); check_p_g_u("/system.slice/system-waldo.slice/foobar.service/sdfdsaf", 0, "foobar.service"); check_p_g_u("/system.slice/system-waldo.slice/_cpu.service/sdfdsaf", 0, "cpu.service"); check_p_g_u("/user.slice/user-1000.slice/user@1000.service/server.service", 0, "user@1000.service"); check_p_g_u("/user.slice/user-1000.slice/user@.service/server.service", -ENXIO, NULL); } static void check_p_g_u_u(const char *path, int code, const char *result) { _cleanup_free_ char *unit = NULL; int r; r = cg_path_get_user_unit(path, &unit); printf("%s: %s → %s %d expected %s %d\n", __func__, path, unit, r, strnull(result), code); assert_se(r == code); assert_se(streq_ptr(unit, result)); } static void test_path_get_user_unit(void) { check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, "foobar.service"); check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/waldo.slice/foobar.service", 0, "foobar.service"); check_p_g_u_u("/user.slice/user-1002.slice/session-2.scope/foobar.service/waldo", 0, "foobar.service"); check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar.service/waldo/uuuux", 0, "foobar.service"); check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/waldo/waldo/uuuux", -ENXIO, NULL); check_p_g_u_u("/user.slice/user-1000.slice/session-2.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service"); check_p_g_u_u("/session-2.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service"); check_p_g_u_u("/xyz.slice/xyz-waldo.slice/session-77.scope/foobar@pie.service/pa/po", 0, "foobar@pie.service"); check_p_g_u_u("/meh.service", -ENXIO, NULL); check_p_g_u_u("/session-3.scope/_cpu.service", 0, "cpu.service"); check_p_g_u_u("/user.slice/user-1000.slice/user@1000.service/server.service", 0, "server.service"); check_p_g_u_u("/user.slice/user-1000.slice/user@1000.service/foobar.slice/foobar@pie.service", 0, "foobar@pie.service"); check_p_g_u_u("/user.slice/user-1000.slice/user@.service/server.service", -ENXIO, NULL); } static void check_p_g_s(const char *path, int code, const char *result) { _cleanup_free_ char *s = NULL; assert_se(cg_path_get_session(path, &s) == code); assert_se(streq_ptr(s, result)); } static void test_path_get_session(void) { check_p_g_s("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, "2"); check_p_g_s("/session-3.scope", 0, "3"); check_p_g_s("/session-.scope", -ENXIO, NULL); check_p_g_s("", -ENXIO, NULL); } static void check_p_g_o_u(const char *path, int code, uid_t result) { uid_t uid = 0; assert_se(cg_path_get_owner_uid(path, &uid) == code); assert_se(uid == result); } static void test_path_get_owner_uid(void) { check_p_g_o_u("/user.slice/user-1000.slice/session-2.scope/foobar.service", 0, 1000); check_p_g_o_u("/user.slice/user-1006.slice", 0, 1006); check_p_g_o_u("", -ENXIO, 0); } static void check_p_g_slice(const char *path, int code, const char *result) { _cleanup_free_ char *s = NULL; assert_se(cg_path_get_slice(path, &s) == code); assert_se(streq_ptr(s, result)); } static void test_path_get_slice(void) { check_p_g_slice("/user.slice", 0, "user.slice"); check_p_g_slice("/foobar", 0, SPECIAL_ROOT_SLICE); check_p_g_slice("/user.slice/user-waldo.slice", 0, "user-waldo.slice"); check_p_g_slice("", 0, SPECIAL_ROOT_SLICE); check_p_g_slice("foobar", 0, SPECIAL_ROOT_SLICE); check_p_g_slice("foobar.slice", 0, "foobar.slice"); check_p_g_slice("foo.slice/foo-bar.slice/waldo.service", 0, "foo-bar.slice"); } static void check_p_g_u_slice(const char *path, int code, const char *result) { _cleanup_free_ char *s = NULL; assert_se(cg_path_get_user_slice(path, &s) == code); assert_se(streq_ptr(s, result)); } static void test_path_get_user_slice(void) { check_p_g_u_slice("/user.slice", -ENXIO, NULL); check_p_g_u_slice("/foobar", -ENXIO, NULL); check_p_g_u_slice("/user.slice/user-waldo.slice", -ENXIO, NULL); check_p_g_u_slice("", -ENXIO, NULL); check_p_g_u_slice("foobar", -ENXIO, NULL); check_p_g_u_slice("foobar.slice", -ENXIO, NULL); check_p_g_u_slice("foo.slice/foo-bar.slice/waldo.service", -ENXIO, NULL); check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service", 0, SPECIAL_ROOT_SLICE); check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service/", 0, SPECIAL_ROOT_SLICE); check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service///", 0, SPECIAL_ROOT_SLICE); check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service/waldo.service", 0, SPECIAL_ROOT_SLICE); check_p_g_u_slice("foo.slice/foo-bar.slice/user@1000.service/piep.slice/foo.service", 0, "piep.slice"); check_p_g_u_slice("/foo.slice//foo-bar.slice/user@1000.service/piep.slice//piep-pap.slice//foo.service", 0, "piep-pap.slice"); } static void test_get_paths(void) { _cleanup_free_ char *a = NULL; assert_se(cg_get_root_path(&a) >= 0); log_info("Root = %s", a); } static void test_proc(void) { _cleanup_closedir_ DIR *d = NULL; struct dirent *de; int r; d = opendir("/proc"); assert_se(d); FOREACH_DIRENT(de, d, break) { _cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *slice = NULL; pid_t pid; uid_t uid = UID_INVALID; if (!IN_SET(de->d_type, DT_DIR, DT_UNKNOWN)) continue; r = parse_pid(de->d_name, &pid); if (r < 0) continue; if (is_kernel_thread(pid)) continue; cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &path); cg_pid_get_path_shifted(pid, NULL, &path_shifted); cg_pid_get_owner_uid(pid, &uid); cg_pid_get_session(pid, &session); cg_pid_get_unit(pid, &unit); cg_pid_get_user_unit(pid, &user_unit); cg_pid_get_machine_name(pid, &machine); cg_pid_get_slice(pid, &slice); printf(PID_FMT"\t%s\t%s\t"UID_FMT"\t%s\t%s\t%s\t%s\t%s\n", pid, path, path_shifted, uid, session, unit, user_unit, machine, slice); } } static void test_escape_one(const char *s, const char *r) { _cleanup_free_ char *b; b = cg_escape(s); assert_se(b); assert_se(streq(b, r)); assert_se(streq(cg_unescape(b), s)); } static void test_escape(void) { test_escape_one("foobar", "foobar"); test_escape_one(".foobar", "_.foobar"); test_escape_one("foobar.service", "foobar.service"); test_escape_one("cgroup.service", "_cgroup.service"); test_escape_one("tasks", "_tasks"); if (access("/sys/fs/cgroup/cpu", F_OK) == 0) test_escape_one("cpu.service", "_cpu.service"); test_escape_one("_foobar", "__foobar"); test_escape_one("", "_"); test_escape_one("_", "__"); test_escape_one(".", "_."); } static void test_controller_is_valid(void) { assert_se(cg_controller_is_valid("foobar")); assert_se(cg_controller_is_valid("foo_bar")); assert_se(cg_controller_is_valid("name=foo")); assert_se(!cg_controller_is_valid("")); assert_se(!cg_controller_is_valid("name=")); assert_se(!cg_controller_is_valid("=")); assert_se(!cg_controller_is_valid("cpu,cpuacct")); assert_se(!cg_controller_is_valid("_")); assert_se(!cg_controller_is_valid("_foobar")); assert_se(!cg_controller_is_valid("tatü")); } static void test_slice_to_path_one(const char *unit, const char *path, int error) { _cleanup_free_ char *ret = NULL; int r; log_info("unit: %s", unit); r = cg_slice_to_path(unit, &ret); log_info("actual: %s / %d", strnull(ret), r); log_info("expect: %s / %d", strnull(path), error); assert_se(r == error); assert_se(streq_ptr(ret, path)); } static void test_slice_to_path(void) { test_slice_to_path_one("foobar.slice", "foobar.slice", 0); test_slice_to_path_one("foobar-waldo.slice", "foobar.slice/foobar-waldo.slice", 0); test_slice_to_path_one("foobar-waldo.service", NULL, -EINVAL); test_slice_to_path_one(SPECIAL_ROOT_SLICE, "", 0); test_slice_to_path_one("--.slice", NULL, -EINVAL); test_slice_to_path_one("-", NULL, -EINVAL); test_slice_to_path_one("-foo-.slice", NULL, -EINVAL); test_slice_to_path_one("-foo.slice", NULL, -EINVAL); test_slice_to_path_one("foo-.slice", NULL, -EINVAL); test_slice_to_path_one("foo--bar.slice", NULL, -EINVAL); test_slice_to_path_one("foo.slice/foo--bar.slice", NULL, -EINVAL); test_slice_to_path_one("a-b.slice", "a.slice/a-b.slice", 0); test_slice_to_path_one("a-b-c-d-e.slice", "a.slice/a-b.slice/a-b-c.slice/a-b-c-d.slice/a-b-c-d-e.slice", 0); test_slice_to_path_one("foobar@.slice", NULL, -EINVAL); test_slice_to_path_one("foobar@waldo.slice", NULL, -EINVAL); test_slice_to_path_one("foobar@waldo.service", NULL, -EINVAL); test_slice_to_path_one("-foo@-.slice", NULL, -EINVAL); test_slice_to_path_one("-foo@.slice", NULL, -EINVAL); test_slice_to_path_one("foo@-.slice", NULL, -EINVAL); test_slice_to_path_one("foo@@bar.slice", NULL, -EINVAL); test_slice_to_path_one("foo.slice/foo@@bar.slice", NULL, -EINVAL); } static void test_shift_path_one(const char *raw, const char *root, const char *shifted) { const char *s = NULL; assert_se(cg_shift_path(raw, root, &s) >= 0); assert_se(streq(s, shifted)); } static void test_shift_path(void) { test_shift_path_one("/foobar/waldo", "/", "/foobar/waldo"); test_shift_path_one("/foobar/waldo", "", "/foobar/waldo"); test_shift_path_one("/foobar/waldo", "/foobar", "/waldo"); test_shift_path_one("/foobar/waldo", "/hogehoge", "/foobar/waldo"); } static void test_mask_supported(void) { CGroupMask m; CGroupController c; assert_se(cg_mask_supported(&m) >= 0); for (c = 0; c < _CGROUP_CONTROLLER_MAX; c++) printf("'%s' is supported: %s\n", cgroup_controller_to_string(c), yes_no(m & CGROUP_CONTROLLER_TO_MASK(c))); } static void test_is_cgroup_fs(void) { struct statfs sfs; assert_se(statfs("/sys/fs/cgroup", &sfs) == 0); if (is_temporary_fs(&sfs)) assert_se(statfs("/sys/fs/cgroup/systemd", &sfs) == 0); assert_se(is_cgroup_fs(&sfs)); } static void test_fd_is_cgroup_fs(void) { int fd; fd = open("/sys/fs/cgroup", O_RDONLY|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); assert_se(fd >= 0); if (fd_is_temporary_fs(fd)) { fd = safe_close(fd); fd = open("/sys/fs/cgroup/systemd", O_RDONLY|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); assert_se(fd >= 0); } assert_se(fd_is_cgroup_fs(fd)); fd = safe_close(fd); } static void test_cg_tests(void) { int all, hybrid, systemd, r; r = cg_unified(); if (r == -ENOMEDIUM) { log_tests_skipped("cgroup not mounted"); return; } assert_se(r >= 0); all = cg_all_unified(); assert_se(IN_SET(all, 0, 1)); hybrid = cg_hybrid_unified(); assert_se(IN_SET(hybrid, 0, 1)); systemd = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); assert_se(IN_SET(systemd, 0, 1)); if (all) { assert_se(systemd); assert_se(!hybrid); } else if (hybrid) { assert_se(systemd); assert_se(!all); } else assert_se(!systemd); } static void test_cg_get_keyed_attribute(void) { _cleanup_free_ char *val = NULL; char *vals3[3] = {}, *vals3a[3] = {}; int i, r; r = cg_get_keyed_attribute("cpu", "/init.scope", "no_such_file", STRV_MAKE("no_such_attr"), &val); if (r == -ENOMEDIUM || ERRNO_IS_PRIVILEGE(r)) { log_info_errno(r, "Skipping most of %s, /sys/fs/cgroup not accessible: %m", __func__); return; } assert_se(r == -ENOENT); assert_se(val == NULL); if (access("/sys/fs/cgroup/init.scope/cpu.stat", R_OK) < 0) { log_info_errno(errno, "Skipping most of %s, /init.scope/cpu.stat not accessible: %m", __func__); return; } assert_se(cg_get_keyed_attribute("cpu", "/init.scope", "cpu.stat", STRV_MAKE("no_such_attr"), &val) == -ENXIO); assert_se(cg_get_keyed_attribute_graceful("cpu", "/init.scope", "cpu.stat", STRV_MAKE("no_such_attr"), &val) == 0); assert_se(val == NULL); assert_se(cg_get_keyed_attribute("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec"), &val) == 0); val = mfree(val); assert_se(cg_get_keyed_attribute_graceful("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec"), &val) == 1); log_info("cpu /init.scope cpu.stat [usage_usec] → \"%s\"", val); assert_se(cg_get_keyed_attribute("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec", "no_such_attr"), vals3) == -ENXIO); assert_se(cg_get_keyed_attribute_graceful("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec", "no_such_attr"), vals3) == 1); assert(vals3[0] && !vals3[1]); free(vals3[0]); assert_se(cg_get_keyed_attribute("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec", "usage_usec"), vals3) == -ENXIO); assert_se(cg_get_keyed_attribute_graceful("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec", "usage_usec"), vals3) == 1); assert(vals3[0] && !vals3[1]); free(vals3[0]); assert_se(cg_get_keyed_attribute("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec", "user_usec", "system_usec"), vals3) == 0); for (i = 0; i < 3; i++) free(vals3[i]); assert_se(cg_get_keyed_attribute_graceful("cpu", "/init.scope", "cpu.stat", STRV_MAKE("usage_usec", "user_usec", "system_usec"), vals3) == 3); log_info("cpu /init.scope cpu.stat [usage_usec user_usec system_usec] → \"%s\", \"%s\", \"%s\"", vals3[0], vals3[1], vals3[2]); assert_se(cg_get_keyed_attribute("cpu", "/init.scope", "cpu.stat", STRV_MAKE("system_usec", "user_usec", "usage_usec"), vals3a) == 0); for (i = 0; i < 3; i++) free(vals3a[i]); assert_se(cg_get_keyed_attribute_graceful("cpu", "/init.scope", "cpu.stat", STRV_MAKE("system_usec", "user_usec", "usage_usec"), vals3a) == 3); log_info("cpu /init.scope cpu.stat [system_usec user_usec usage_usec] → \"%s\", \"%s\", \"%s\"", vals3a[0], vals3a[1], vals3a[2]); for (i = 0; i < 3; i++) { free(vals3[i]); free(vals3a[i]); } } int main(void) { test_setup_logging(LOG_DEBUG); test_path_decode_unit(); test_path_get_unit(); test_path_get_user_unit(); test_path_get_session(); test_path_get_owner_uid(); test_path_get_slice(); test_path_get_user_slice(); TEST_REQ_RUNNING_SYSTEMD(test_get_paths()); test_proc(); TEST_REQ_RUNNING_SYSTEMD(test_escape()); test_controller_is_valid(); test_slice_to_path(); test_shift_path(); TEST_REQ_RUNNING_SYSTEMD(test_mask_supported()); TEST_REQ_RUNNING_SYSTEMD(test_is_cgroup_fs()); TEST_REQ_RUNNING_SYSTEMD(test_fd_is_cgroup_fs()); test_cg_tests(); test_cg_get_keyed_attribute(); return 0; }