diff options
Diffstat (limited to '')
| -rw-r--r-- | src/test/test-cgroup-util.c | 466 |
1 files changed, 466 insertions, 0 deletions
diff --git a/src/test/test-cgroup-util.c b/src/test/test-cgroup-util.c new file mode 100644 index 0000000..51f52d9 --- /dev/null +++ b/src/test/test-cgroup-util.c @@ -0,0 +1,466 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "alloc-util.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" + +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)); +} + +TEST(path_decode_unit) { + 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)); +} + +TEST(path_get_unit) { + 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_p(const char *path, int code, const char *result) { + _cleanup_free_ char *unit_path = NULL; + int r; + + r = cg_path_get_unit_path(path, &unit_path); + printf("%s: %s → %s %d expected %s %d\n", __func__, path, unit_path, r, strnull(result), code); + assert_se(r == code); + assert_se(streq_ptr(unit_path, result)); +} + +TEST(path_get_unit_path) { + check_p_g_u_p("/system.slice/foobar.service/sdfdsaf", 0, "/system.slice/foobar.service"); + check_p_g_u_p("/system.slice/getty@tty5.service", 0, "/system.slice/getty@tty5.service"); + check_p_g_u_p("/system.slice/getty@tty5.service/aaa/bbb", 0, "/system.slice/getty@tty5.service"); + check_p_g_u_p("/system.slice/getty@tty5.service/", 0, "/system.slice/getty@tty5.service"); + check_p_g_u_p("/system.slice/getty@tty6.service/tty5", 0, "/system.slice/getty@tty6.service"); + check_p_g_u_p("sadfdsafsda", -ENXIO, NULL); + check_p_g_u_p("/system.slice/getty####@tty6.service/xxx", -ENXIO, NULL); + check_p_g_u_p("/system.slice/system-waldo.slice/foobar.service/sdfdsaf", 0, "/system.slice/system-waldo.slice/foobar.service"); + check_p_g_u_p("/system.slice/system-waldo.slice/_cpu.service/sdfdsaf", 0, "/system.slice/system-waldo.slice/_cpu.service"); + check_p_g_u_p("/system.slice/system-waldo.slice/_cpu.service", 0, "/system.slice/system-waldo.slice/_cpu.service"); + check_p_g_u_p("/user.slice/user-1000.slice/user@1000.service/server.service", 0, "/user.slice/user-1000.slice/user@1000.service"); + check_p_g_u_p("/user.slice/user-1000.slice/user@.service/server.service", -ENXIO, NULL); + check_p_g_u_p("/user.slice/_user-1000.slice/user@1000.service/foobar.slice/foobar@pie.service", 0, "/user.slice/_user-1000.slice/user@1000.service"); + check_p_g_u_p("/_session-2.scope/_foobar@pie.service/pa/po", 0, "/_session-2.scope"); +} + +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)); +} + +TEST(path_get_user_unit) { + 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)); +} + +TEST(path_get_session) { + 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); +} + +TEST(path_get_owner_uid) { + 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)); +} + +TEST(path_get_slice) { + 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)); +} + +TEST(path_get_user_slice) { + 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"); +} + +TEST(get_paths, .sd_booted = true) { + _cleanup_free_ char *a = NULL; + + assert_se(cg_get_root_path(&a) >= 0); + log_info("Root = %s", a); +} + +TEST(proc) { + _cleanup_closedir_ DIR *d = NULL; + int r; + + assert_se(proc_dir_open(&d) >= 0); + + for (;;) { + _cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *slice = NULL; + _cleanup_(pidref_done) PidRef pid = PIDREF_NULL; + uid_t uid = UID_INVALID; + + r = proc_dir_read_pidref(d, &pid); + assert_se(r >= 0); + + if (r == 0) + break; + + if (pidref_is_kernel_thread(&pid) != 0) + continue; + + cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid.pid, &path); + cg_pid_get_path_shifted(pid.pid, NULL, &path_shifted); + cg_pid_get_owner_uid(pid.pid, &uid); + cg_pid_get_session(pid.pid, &session); + cg_pid_get_unit(pid.pid, &unit); + cg_pid_get_user_unit(pid.pid, &user_unit); + cg_pid_get_machine_name(pid.pid, &machine); + cg_pid_get_slice(pid.pid, &slice); + + printf(PID_FMT"\t%s\t%s\t"UID_FMT"\t%s\t%s\t%s\t%s\t%s\n", + pid.pid, + path, + path_shifted, + uid, + session, + unit, + user_unit, + machine, + slice); + } +} + +static void test_escape_one(const char *s, const char *expected) { + _cleanup_free_ char *b = NULL; + + assert_se(s); + assert_se(expected); + + assert_se(cg_escape(s, &b) >= 0); + assert_se(streq(b, expected)); + + assert_se(streq(cg_unescape(b), s)); + + assert_se(filename_is_valid(b)); + assert_se(!cg_needs_escape(s) || b[0] == '_'); +} + +TEST(escape, .sd_booted = true) { + 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(".", "_."); +} + +TEST(controller_is_valid) { + 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)); +} + +TEST(slice_to_path) { + 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)); +} + +TEST(shift_path) { + 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"); +} + +TEST(mask_supported, .sd_booted = true) { + 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))); +} + +TEST(is_cgroup_fs, .sd_booted = true) { + 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)); +} + +TEST(fd_is_cgroup_fs, .sd_booted = true) { + 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); +} + +TEST(cg_tests) { + 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); +} + +TEST(cg_get_keyed_attribute) { + _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_se(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_se(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]); + } +} + +TEST(bfq_weight_conversion) { + assert_se(BFQ_WEIGHT(1) == 1); + assert_se(BFQ_WEIGHT(50) == 50); + assert_se(BFQ_WEIGHT(100) == 100); + assert_se(BFQ_WEIGHT(500) == 136); + assert_se(BFQ_WEIGHT(5000) == 545); + assert_se(BFQ_WEIGHT(10000) == 1000); +} + +DEFINE_TEST_MAIN(LOG_DEBUG); |