src/test/test-cgroup-mask.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <stdio.h>
   4
   5 #include "macro.h"
   6 #include "manager.h"
   7 #include "rm-rf.h"
   8 #include "string-util.h"
   9 #include "test-helper.h"
  10 #include "tests.h"
  11 #include "unit.h"
  12
  13 static int test_cgroup_mask(void) {
  14         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  15         _cleanup_(manager_freep) Manager *m = NULL;
  16         Unit *son, *daughter, *parent, *root, *grandchild, *parent_deep;
  17         int r;
  18
  19         r = enter_cgroup_subroot();
  20         if (r == -ENOMEDIUM)
  21                 return log_tests_skipped("cgroupfs not available");
  22
  23         /* Prepare the manager. */
  24         assert_se(set_unit_path(get_testdata_dir()) >= 0);
  25         assert_se(runtime_dir = setup_fake_runtime_dir());
  26         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m);
  27         if (IN_SET(r, -EPERM, -EACCES)) {
  28                 log_error_errno(r, "manager_new: %m");
  29                 return log_tests_skipped("cannot create manager");
  30         }
  31
  32         assert_se(r >= 0);
  33
  34         /* Turn off all kinds of default accouning, so that we can
  35          * verify the masks resulting of our configuration and nothing
  36          * else. */
  37         m->default_cpu_accounting =
  38                 m->default_memory_accounting =
  39                 m->default_blockio_accounting =
  40                 m->default_io_accounting =
  41                 m->default_tasks_accounting = false;
  42         m->default_tasks_max = (uint64_t) -1;
  43
  44         assert_se(r >= 0);
  45         assert_se(manager_startup(m, NULL, NULL) >= 0);
  46
  47         /* Load units and verify hierarchy. */
  48         assert_se(manager_load_startable_unit_or_warn(m, "parent.slice", NULL, &parent) >= 0);
  49         assert_se(manager_load_startable_unit_or_warn(m, "son.service", NULL, &son) >= 0);
  50         assert_se(manager_load_startable_unit_or_warn(m, "daughter.service", NULL, &daughter) >= 0);
  51         assert_se(manager_load_startable_unit_or_warn(m, "grandchild.service", NULL, &grandchild) >= 0);
  52         assert_se(manager_load_startable_unit_or_warn(m, "parent-deep.slice", NULL, &parent_deep) >= 0);
  53         assert_se(UNIT_DEREF(son->slice) == parent);
  54         assert_se(UNIT_DEREF(daughter->slice) == parent);
  55         assert_se(UNIT_DEREF(parent_deep->slice) == parent);
  56         assert_se(UNIT_DEREF(grandchild->slice) == parent_deep);
  57         root = UNIT_DEREF(parent->slice);
  58
  59         /* Verify per-unit cgroups settings. */
  60         assert_se(unit_get_own_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT));
  61         assert_se(unit_get_own_mask(daughter) == 0);
  62         assert_se(unit_get_own_mask(grandchild) == 0);
  63         assert_se(unit_get_own_mask(parent_deep) == CGROUP_MASK_MEMORY);
  64         assert_se(unit_get_own_mask(parent) == (CGROUP_MASK_IO | CGROUP_MASK_BLKIO));
  65         assert_se(unit_get_own_mask(root) == 0);
  66
  67         /* Verify aggregation of member masks */
  68         assert_se(unit_get_members_mask(son) == 0);
  69         assert_se(unit_get_members_mask(daughter) == 0);
  70         assert_se(unit_get_members_mask(grandchild) == 0);
  71         assert_se(unit_get_members_mask(parent_deep) == 0);
  72         assert_se(unit_get_members_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  73         assert_se(unit_get_members_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  74
  75         /* Verify aggregation of sibling masks. */
  76         assert_se(unit_get_siblings_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  77         assert_se(unit_get_siblings_mask(daughter) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  78         assert_se(unit_get_siblings_mask(grandchild) == 0);
  79         assert_se(unit_get_siblings_mask(parent_deep) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  80         assert_se(unit_get_siblings_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  81         assert_se(unit_get_siblings_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  82
  83         /* Verify aggregation of target masks. */
  84         assert_se(unit_get_target_mask(son) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  85         assert_se(unit_get_target_mask(daughter) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  86         assert_se(unit_get_target_mask(grandchild) == 0);
  87         assert_se(unit_get_target_mask(parent_deep) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  88         assert_se(unit_get_target_mask(parent) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  89         assert_se(unit_get_target_mask(root) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  90
  91         return 0;
  92 }
  93
  94 static void test_cg_mask_to_string_one(CGroupMask mask, const char *t) {
  95         _cleanup_free_ char *b = NULL;
  96
  97         assert_se(cg_mask_to_string(mask, &b) >= 0);
  98         assert_se(streq_ptr(b, t));
  99 }
 100
 101 static void test_cg_mask_to_string(void) {
 102         test_cg_mask_to_string_one(0, NULL);
 103         test_cg_mask_to_string_one(_CGROUP_MASK_ALL, "cpu cpuacct io blkio memory devices pids bpf-firewall bpf-devices");
 104         test_cg_mask_to_string_one(CGROUP_MASK_CPU, "cpu");
 105         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT, "cpuacct");
 106         test_cg_mask_to_string_one(CGROUP_MASK_IO, "io");
 107         test_cg_mask_to_string_one(CGROUP_MASK_BLKIO, "blkio");
 108         test_cg_mask_to_string_one(CGROUP_MASK_MEMORY, "memory");
 109         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES, "devices");
 110         test_cg_mask_to_string_one(CGROUP_MASK_PIDS, "pids");
 111         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_CPUACCT, "cpu cpuacct");
 112         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_PIDS, "cpu pids");
 113         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT|CGROUP_MASK_PIDS, "cpuacct pids");
 114         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES|CGROUP_MASK_PIDS, "devices pids");
 115         test_cg_mask_to_string_one(CGROUP_MASK_IO|CGROUP_MASK_BLKIO, "io blkio");
 116 }
 117
 118 int main(int argc, char* argv[]) {
 119         int rc = EXIT_SUCCESS;
 120
 121         test_setup_logging(LOG_DEBUG);
 122
 123         test_cg_mask_to_string();
 124         TEST_REQ_RUNNING_SYSTEMD(rc = test_cgroup_mask());
 125
 126         return rc;
 127 }