src/test/test-cgroup.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <unistd.h>
   4
   5 #include "cgroup-setup.h"
   6 #include "cgroup-util.h"
   7 #include "errno-util.h"
   8 #include "path-util.h"
   9 #include "process-util.h"
  10 #include "string-util.h"
  11 #include "tests.h"
  12
  13 static void test_cg_split_spec(void) {
  14         char *c, *p;
  15
  16         log_info("/* %s */", __func__);
  17
  18         assert_se(cg_split_spec("foobar:/", &c, &p) == 0);
  19         assert_se(streq(c, "foobar"));
  20         assert_se(streq(p, "/"));
  21         c = mfree(c);
  22         p = mfree(p);
  23
  24         assert_se(cg_split_spec("foobar:", &c, &p) == 0);
  25         c = mfree(c);
  26         p = mfree(p);
  27
  28         assert_se(cg_split_spec("foobar:asdfd", &c, &p) < 0);
  29         assert_se(cg_split_spec(":///", &c, &p) < 0);
  30         assert_se(cg_split_spec(":", &c, &p) < 0);
  31         assert_se(cg_split_spec("", &c, &p) < 0);
  32         assert_se(cg_split_spec("fo/obar:/", &c, &p) < 0);
  33
  34         assert_se(cg_split_spec("/", &c, &p) >= 0);
  35         assert_se(c == NULL);
  36         assert_se(streq(p, "/"));
  37         p = mfree(p);
  38
  39         assert_se(cg_split_spec("foo", &c, &p) >= 0);
  40         assert_se(streq(c, "foo"));
  41         assert_se(p == NULL);
  42         c = mfree(c);
  43 }
  44
  45 static void test_cg_create(void) {
  46         log_info("/* %s */", __func__);
  47         int r;
  48
  49         r = cg_unified_cached(false);
  50         if (r < 0) {
  51                 log_info_errno(r, "Skipping %s: %m", __func__);
  52                 return;
  53         }
  54
  55         _cleanup_free_ char *here = NULL;
  56         assert_se(cg_pid_get_path_shifted(0, NULL, &here) >= 0);
  57
  58         const char *test_a = prefix_roota(here, "/test-a"),
  59                    *test_b = prefix_roota(here, "/test-b"),
  60                    *test_c = prefix_roota(here, "/test-b/test-c"),
  61                    *test_d = prefix_roota(here, "/test-b/test-d");
  62         char *path;
  63
  64         log_info("Paths for test:\n%s\n%s", test_a, test_b);
  65
  66         r = cg_create(SYSTEMD_CGROUP_CONTROLLER, test_a);
  67         if (IN_SET(r, -EPERM, -EACCES, -EROFS)) {
  68                 log_info_errno(r, "Skipping %s: %m", __func__);
  69                 return;
  70         }
  71
  72         assert_se(r == 1);
  73         assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, test_a) == 0);
  74         assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, test_b) == 1);
  75         assert_se(cg_create(SYSTEMD_CGROUP_CONTROLLER, test_c) == 1);
  76         assert_se(cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, test_b, 0) == 0);
  77
  78         assert_se(cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, getpid_cached(), &path) == 0);
  79         assert_se(streq(path, test_b));
  80         free(path);
  81
  82         assert_se(cg_attach(SYSTEMD_CGROUP_CONTROLLER, test_a, 0) == 0);
  83
  84         assert_se(cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, getpid_cached(), &path) == 0);
  85         assert_se(path_equal(path, test_a));
  86         free(path);
  87
  88         assert_se(cg_create_and_attach(SYSTEMD_CGROUP_CONTROLLER, test_d, 0) == 1);
  89
  90         assert_se(cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, getpid_cached(), &path) == 0);
  91         assert_se(path_equal(path, test_d));
  92         free(path);
  93
  94         assert_se(cg_get_path(SYSTEMD_CGROUP_CONTROLLER, test_d, NULL, &path) == 0);
  95         log_debug("test_d: %s", path);
  96         const char *full_d;
  97         if (cg_all_unified())
  98                 full_d = strjoina("/sys/fs/cgroup", test_d);
  99         else if (cg_hybrid_unified())
 100                 full_d = strjoina("/sys/fs/cgroup/unified", test_d);
 101         else
 102                 full_d = strjoina("/sys/fs/cgroup/systemd", test_d);
 103         assert_se(path_equal(path, full_d));
 104         free(path);
 105
 106         assert_se(cg_is_empty(SYSTEMD_CGROUP_CONTROLLER, test_a) > 0);
 107         assert_se(cg_is_empty(SYSTEMD_CGROUP_CONTROLLER, test_b) > 0);
 108         assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, test_a) > 0);
 109         assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, test_b) == 0);
 110
 111         assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, test_a, 0, 0, NULL, NULL, NULL) == 0);
 112         assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, test_b, 0, 0, NULL, NULL, NULL) > 0);
 113
 114         assert_se(cg_migrate_recursive(SYSTEMD_CGROUP_CONTROLLER, test_b, SYSTEMD_CGROUP_CONTROLLER, test_a, 0) > 0);
 115
 116         assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, test_a) == 0);
 117         assert_se(cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, test_b) > 0);
 118
 119         assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, test_a, 0, 0, NULL, NULL, NULL) > 0);
 120         assert_se(cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, test_b, 0, 0, NULL, NULL, NULL) == 0);
 121
 122         cg_trim(SYSTEMD_CGROUP_CONTROLLER, test_b, false);
 123
 124         assert_se(cg_rmdir(SYSTEMD_CGROUP_CONTROLLER, test_b) == 0);
 125         assert_se(cg_rmdir(SYSTEMD_CGROUP_CONTROLLER, test_a) < 0);
 126         assert_se(cg_migrate_recursive(SYSTEMD_CGROUP_CONTROLLER, test_a, SYSTEMD_CGROUP_CONTROLLER, here, 0) > 0);
 127         assert_se(cg_rmdir(SYSTEMD_CGROUP_CONTROLLER, test_a) == 0);
 128 }
 129
 130 int main(int argc, char *argv[]) {
 131         test_setup_logging(LOG_DEBUG);
 132
 133         test_cg_split_spec();
 134         test_cg_create();
 135
 136         return 0;
 137 }