src/test/test-cgroup-mask.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   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 "test-helper.h"
  12 #include "tests.h"
  13 #include "unit.h"
  14
  15 #define ASSERT_CGROUP_MASK(got, expected) \
  16         log_cgroup_mask(got, expected); \
  17         assert_se(got == expected)
  18
  19 #define ASSERT_CGROUP_MASK_JOINED(got, expected) ASSERT_CGROUP_MASK(got, CGROUP_MASK_EXTEND_JOINED(expected))
  20
  21 static void log_cgroup_mask(CGroupMask got, CGroupMask expected) {
  22         _cleanup_free_ char *e_store = NULL, *g_store = NULL;
  23
  24         assert_se(cg_mask_to_string(expected, &e_store) >= 0);
  25         log_info("Expected mask: %s\n", e_store);
  26         assert_se(cg_mask_to_string(got, &g_store) >= 0);
  27         log_info("Got mask: %s\n", g_store);
  28 }
  29
  30 static int test_cgroup_mask(void) {
  31         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  32         _cleanup_(manager_freep) Manager *m = NULL;
  33         Unit *son, *daughter, *parent, *root, *grandchild, *parent_deep, *nomem_parent, *nomem_leaf;
  34         int r;
  35         CGroupMask cpu_accounting_mask = get_cpu_accounting_mask();
  36
  37         r = enter_cgroup_subroot();
  38         if (r == -ENOMEDIUM)
  39                 return log_tests_skipped("cgroupfs not available");
  40
  41         /* Prepare the manager. */
  42         assert_se(set_unit_path(get_testdata_dir()) >= 0);
  43         assert_se(runtime_dir = setup_fake_runtime_dir());
  44         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m);
  45         if (IN_SET(r, -EPERM, -EACCES)) {
  46                 log_error_errno(r, "manager_new: %m");
  47                 return log_tests_skipped("cannot create manager");
  48         }
  49
  50         assert_se(r >= 0);
  51
  52         /* Turn off all kinds of default accouning, so that we can
  53          * verify the masks resulting of our configuration and nothing
  54          * else. */
  55         m->default_cpu_accounting =
  56                 m->default_memory_accounting =
  57                 m->default_blockio_accounting =
  58                 m->default_io_accounting =
  59                 m->default_tasks_accounting = false;
  60         m->default_tasks_max = (uint64_t) -1;
  61
  62         assert_se(r >= 0);
  63         assert_se(manager_startup(m, 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_DEREF(son->slice) == parent);
  74         assert_se(UNIT_DEREF(daughter->slice) == parent);
  75         assert_se(UNIT_DEREF(parent_deep->slice) == parent);
  76         assert_se(UNIT_DEREF(grandchild->slice) == parent_deep);
  77         assert_se(UNIT_DEREF(nomem_leaf->slice) == nomem_parent);
  78         root = UNIT_DEREF(parent->slice);
  79         assert_se(UNIT_DEREF(nomem_parent->slice) == 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));
  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));
  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));
 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         return 0;
 122 }
 123
 124 static void test_cg_mask_to_string_one(CGroupMask mask, const char *t) {
 125         _cleanup_free_ char *b = NULL;
 126
 127         assert_se(cg_mask_to_string(mask, &b) >= 0);
 128         assert_se(streq_ptr(b, t));
 129 }
 130
 131 static void test_cg_mask_to_string(void) {
 132         test_cg_mask_to_string_one(0, NULL);
 133         test_cg_mask_to_string_one(_CGROUP_MASK_ALL, "cpu cpuacct io blkio memory devices pids bpf-firewall bpf-devices");
 134         test_cg_mask_to_string_one(CGROUP_MASK_CPU, "cpu");
 135         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT, "cpuacct");
 136         test_cg_mask_to_string_one(CGROUP_MASK_IO, "io");
 137         test_cg_mask_to_string_one(CGROUP_MASK_BLKIO, "blkio");
 138         test_cg_mask_to_string_one(CGROUP_MASK_MEMORY, "memory");
 139         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES, "devices");
 140         test_cg_mask_to_string_one(CGROUP_MASK_PIDS, "pids");
 141         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_CPUACCT, "cpu cpuacct");
 142         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_PIDS, "cpu pids");
 143         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT|CGROUP_MASK_PIDS, "cpuacct pids");
 144         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES|CGROUP_MASK_PIDS, "devices pids");
 145         test_cg_mask_to_string_one(CGROUP_MASK_IO|CGROUP_MASK_BLKIO, "io blkio");
 146 }
 147
 148 int main(int argc, char* argv[]) {
 149         int rc = EXIT_SUCCESS;
 150
 151         test_setup_logging(LOG_DEBUG);
 152
 153         test_cg_mask_to_string();
 154         TEST_REQ_RUNNING_SYSTEMD(rc = test_cgroup_mask());
 155
 156         return rc;
 157 }