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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <unistd.h>
#include "alloc-util.h"
#include "cgroup-setup.h"
#include "errno-util.h"
#include "log.h"
#include "proc-cmdline.h"
#include "string-util.h"
#include "tests.h"
static void test_is_wanted_print_one(bool header) {
_cleanup_free_ char *cmdline = NULL;
log_info("-- %s --", __func__);
ASSERT_OK(proc_cmdline(&cmdline));
log_info("cmdline: %s", cmdline);
if (header)
(void) system("findmnt -n /sys/fs/cgroup");
log_info("is_unified_wanted() → %s", yes_no(cg_is_unified_wanted()));
log_info("is_hybrid_wanted() → %s", yes_no(cg_is_hybrid_wanted()));
log_info("is_legacy_wanted() → %s", yes_no(cg_is_legacy_wanted()));
log_info(" ");
}
TEST(is_wanted_print) {
test_is_wanted_print_one(true);
test_is_wanted_print_one(false); /* run twice to test caching */
}
TEST(is_wanted) {
ASSERT_OK(setenv("SYSTEMD_PROC_CMDLINE",
"systemd.unified_cgroup_hierarchy", 1));
test_is_wanted_print_one(false);
ASSERT_OK(setenv("SYSTEMD_PROC_CMDLINE",
"systemd.unified_cgroup_hierarchy=0", 1));
test_is_wanted_print_one(false);
ASSERT_OK(setenv("SYSTEMD_PROC_CMDLINE",
"systemd.unified_cgroup_hierarchy=0 "
"systemd.legacy_systemd_cgroup_controller", 1));
test_is_wanted_print_one(false);
ASSERT_OK(setenv("SYSTEMD_PROC_CMDLINE",
"systemd.unified_cgroup_hierarchy=0 "
"systemd.legacy_systemd_cgroup_controller=0", 1));
test_is_wanted_print_one(false);
/* cgroup_no_v1=all implies unified cgroup hierarchy, unless otherwise
* explicitly specified. */
ASSERT_OK(setenv("SYSTEMD_PROC_CMDLINE",
"cgroup_no_v1=all", 1));
test_is_wanted_print_one(false);
ASSERT_OK(setenv("SYSTEMD_PROC_CMDLINE",
"cgroup_no_v1=all "
"systemd.unified_cgroup_hierarchy=0", 1));
test_is_wanted_print_one(false);
}
static int intro(void) {
if (access("/proc/cmdline", R_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return log_tests_skipped("can't read /proc/cmdline");
return EXIT_SUCCESS;
}
DEFINE_TEST_MAIN_WITH_INTRO(LOG_DEBUG, intro);
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