src/test/test-cgroup-mask.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <stdio.h>
   4
   5 #include "cgroup.h"
   6 #include "cgroup-util.h"
   7 #include "macro.h"
   8 #include "manager.h"
   9 #include "rm-rf.h"
  10 #include "string-util.h"
  11 #include "tests.h"
  12 #include "unit.h"
  13
  14 #define ASSERT_CGROUP_MASK(got, expected) \
  15         log_cgroup_mask(got, expected); \
  16         assert_se(got == expected)
  17
  18 #define ASSERT_CGROUP_MASK_JOINED(got, expected) ASSERT_CGROUP_MASK(got, CGROUP_MASK_EXTEND_JOINED(expected))
  19
  20 static void log_cgroup_mask(CGroupMask got, CGroupMask expected) {
  21         _cleanup_free_ char *e_store = NULL, *g_store = NULL;
  22
  23         assert_se(cg_mask_to_string(expected, &e_store) >= 0);
  24         log_info("Expected mask: %s\n", e_store);
  25         assert_se(cg_mask_to_string(got, &g_store) >= 0);
  26         log_info("Got mask: %s\n", g_store);
  27 }
  28
  29 TEST_RET(cgroup_mask, .sd_booted = true) {
  30         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  31         _cleanup_(manager_freep) Manager *m = NULL;
  32         Unit *son, *daughter, *parent, *root, *grandchild, *parent_deep, *nomem_parent, *nomem_leaf;
  33         int r;
  34         CGroupMask cpu_accounting_mask = get_cpu_accounting_mask();
  35
  36         r = enter_cgroup_subroot(NULL);
  37         if (r == -ENOMEDIUM)
  38                 return log_tests_skipped("cgroupfs not available");
  39
  40         /* Prepare the manager. */
  41         _cleanup_free_ char *unit_dir = NULL;
  42         assert_se(get_testdata_dir("units", &unit_dir) >= 0);
  43         assert_se(set_unit_path(unit_dir) >= 0);
  44         assert_se(runtime_dir = setup_fake_runtime_dir());
  45         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m);
  46         if (IN_SET(r, -EPERM, -EACCES)) {
  47                 log_error_errno(r, "manager_new: %m");
  48                 return log_tests_skipped("cannot create manager");
  49         }
  50
  51         assert_se(r >= 0);
  52
  53         /* Turn off all kinds of default accouning, so that we can
  54          * verify the masks resulting of our configuration and nothing
  55          * else. */
  56         m->default_cpu_accounting =
  57                 m->default_memory_accounting =
  58                 m->default_blockio_accounting =
  59                 m->default_io_accounting =
  60                 m->default_tasks_accounting = false;
  61         m->default_tasks_max = TASKS_MAX_UNSET;
  62
  63         assert_se(manager_startup(m, NULL, NULL, NULL) >= 0);
  64
  65         /* Load units and verify hierarchy. */
  66         assert_se(manager_load_startable_unit_or_warn(m, "parent.slice", NULL, &parent) >= 0);
  67         assert_se(manager_load_startable_unit_or_warn(m, "son.service", NULL, &son) >= 0);
  68         assert_se(manager_load_startable_unit_or_warn(m, "daughter.service", NULL, &daughter) >= 0);
  69         assert_se(manager_load_startable_unit_or_warn(m, "grandchild.service", NULL, &grandchild) >= 0);
  70         assert_se(manager_load_startable_unit_or_warn(m, "parent-deep.slice", NULL, &parent_deep) >= 0);
  71         assert_se(manager_load_startable_unit_or_warn(m, "nomem.slice", NULL, &nomem_parent) >= 0);
  72         assert_se(manager_load_startable_unit_or_warn(m, "nomemleaf.service", NULL, &nomem_leaf) >= 0);
  73         assert_se(UNIT_GET_SLICE(son) == parent);
  74         assert_se(UNIT_GET_SLICE(daughter) == parent);
  75         assert_se(UNIT_GET_SLICE(parent_deep) == parent);
  76         assert_se(UNIT_GET_SLICE(grandchild) == parent_deep);
  77         assert_se(UNIT_GET_SLICE(nomem_leaf) == nomem_parent);
  78         root = UNIT_GET_SLICE(parent);
  79         assert_se(UNIT_GET_SLICE(nomem_parent) == root);
  80
  81         /* Verify per-unit cgroups settings. */
  82         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(son), CGROUP_MASK_CPU);
  83         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(daughter), cpu_accounting_mask);
  84         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(grandchild), 0);
  85         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(parent_deep), CGROUP_MASK_MEMORY);
  86         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(parent), (CGROUP_MASK_IO | CGROUP_MASK_BLKIO));
  87         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(nomem_parent), 0);
  88         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(nomem_leaf), (CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  89         ASSERT_CGROUP_MASK_JOINED(unit_get_own_mask(root), 0);
  90
  91         /* Verify aggregation of member masks */
  92         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(son), 0);
  93         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(daughter), 0);
  94         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(grandchild), 0);
  95         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(parent_deep), 0);
  96         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(parent), (CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY));
  97         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(nomem_parent), (CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  98         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(nomem_leaf), 0);
  99         ASSERT_CGROUP_MASK_JOINED(unit_get_members_mask(root), (CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 100
 101         /* Verify aggregation of sibling masks. */
 102         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(son), (CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY));
 103         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(daughter), (CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY));
 104         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(grandchild), 0);
 105         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(parent_deep), (CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY));
 106         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(parent), (CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 107         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(nomem_parent), (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 108         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(nomem_leaf), (CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 109         ASSERT_CGROUP_MASK_JOINED(unit_get_siblings_mask(root), (CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 110
 111         /* Verify aggregation of target masks. */
 112         ASSERT_CGROUP_MASK(unit_get_target_mask(son), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 113         ASSERT_CGROUP_MASK(unit_get_target_mask(daughter), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 114         ASSERT_CGROUP_MASK(unit_get_target_mask(grandchild), 0);
 115         ASSERT_CGROUP_MASK(unit_get_target_mask(parent_deep), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 116         ASSERT_CGROUP_MASK(unit_get_target_mask(parent), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 117         ASSERT_CGROUP_MASK(unit_get_target_mask(nomem_parent), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO) & m->cgroup_supported));
 118         ASSERT_CGROUP_MASK(unit_get_target_mask(nomem_leaf), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_IO | CGROUP_MASK_BLKIO) & m->cgroup_supported));
 119         ASSERT_CGROUP_MASK(unit_get_target_mask(root), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 120
 121         /* Verify aggregation of enable masks. */
 122         ASSERT_CGROUP_MASK(unit_get_enable_mask(son), 0);
 123         ASSERT_CGROUP_MASK(unit_get_enable_mask(daughter), 0);
 124         ASSERT_CGROUP_MASK(unit_get_enable_mask(grandchild), 0);
 125         ASSERT_CGROUP_MASK(unit_get_enable_mask(parent_deep), 0);
 126         ASSERT_CGROUP_MASK(unit_get_enable_mask(parent), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 127         ASSERT_CGROUP_MASK(unit_get_enable_mask(nomem_parent), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_IO | CGROUP_MASK_BLKIO) & m->cgroup_supported));
 128         ASSERT_CGROUP_MASK(unit_get_enable_mask(nomem_leaf), 0);
 129         ASSERT_CGROUP_MASK(unit_get_enable_mask(root), (CGROUP_MASK_EXTEND_JOINED(CGROUP_MASK_CPU | cpu_accounting_mask | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 130
 131         return 0;
 132 }
 133
 134 static void test_cg_mask_to_string_one(CGroupMask mask, const char *t) {
 135         _cleanup_free_ char *b = NULL;
 136
 137         assert_se(cg_mask_to_string(mask, &b) >= 0);
 138         assert_se(streq_ptr(b, t));
 139 }
 140
 141 TEST(cg_mask_to_string) {
 142         test_cg_mask_to_string_one(0, NULL);
 143         test_cg_mask_to_string_one(_CGROUP_MASK_ALL, "cpu cpuacct cpuset io blkio memory devices pids bpf-firewall bpf-devices bpf-foreign bpf-socket-bind bpf-restrict-network-interfaces");
 144         test_cg_mask_to_string_one(CGROUP_MASK_CPU, "cpu");
 145         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT, "cpuacct");
 146         test_cg_mask_to_string_one(CGROUP_MASK_CPUSET, "cpuset");
 147         test_cg_mask_to_string_one(CGROUP_MASK_IO, "io");
 148         test_cg_mask_to_string_one(CGROUP_MASK_BLKIO, "blkio");
 149         test_cg_mask_to_string_one(CGROUP_MASK_MEMORY, "memory");
 150         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES, "devices");
 151         test_cg_mask_to_string_one(CGROUP_MASK_PIDS, "pids");
 152         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_CPUACCT, "cpu cpuacct");
 153         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_PIDS, "cpu pids");
 154         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT|CGROUP_MASK_PIDS, "cpuacct pids");
 155         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES|CGROUP_MASK_PIDS, "devices pids");
 156         test_cg_mask_to_string_one(CGROUP_MASK_IO|CGROUP_MASK_BLKIO, "io blkio");
 157 }
 158
 159 DEFINE_TEST_MAIN(LOG_DEBUG);