src/test/test-cgroup-mask.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright © 2013 David Strauss
   4 ***/
   5
   6 #include <stdio.h>
   7
   8 #include "macro.h"
   9 #include "manager.h"
  10 #include "rm-rf.h"
  11 #include "string-util.h"
  12 #include "test-helper.h"
  13 #include "tests.h"
  14 #include "unit.h"
  15
  16 static int test_cgroup_mask(void) {
  17         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  18         _cleanup_(manager_freep) Manager *m = NULL;
  19         Unit *son, *daughter, *parent, *root, *grandchild, *parent_deep;
  20         FILE *serial = NULL;
  21         FDSet *fdset = NULL;
  22         int r;
  23
  24         r = enter_cgroup_subroot();
  25         if (r == -ENOMEDIUM) {
  26                 puts("Skipping test: cgroupfs not available");
  27                 return EXIT_TEST_SKIP;
  28         }
  29
  30         /* Prepare the manager. */
  31         assert_se(set_unit_path(get_testdata_dir("")) >= 0);
  32         assert_se(runtime_dir = setup_fake_runtime_dir());
  33         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m);
  34         if (IN_SET(r, -EPERM, -EACCES)) {
  35                 puts("manager_new: Permission denied. Skipping test.");
  36                 return EXIT_TEST_SKIP;
  37         }
  38         assert_se(r >= 0);
  39
  40         /* Turn off all kinds of default accouning, so that we can
  41          * verify the masks resulting of our configuration and nothing
  42          * else. */
  43         m->default_cpu_accounting =
  44                 m->default_memory_accounting =
  45                 m->default_blockio_accounting =
  46                 m->default_io_accounting =
  47                 m->default_tasks_accounting = false;
  48         m->default_tasks_max = (uint64_t) -1;
  49
  50         assert_se(r >= 0);
  51         assert_se(manager_startup(m, serial, fdset) >= 0);
  52
  53         /* Load units and verify hierarchy. */
  54         assert_se(manager_load_startable_unit_or_warn(m, "parent.slice", NULL, &parent) >= 0);
  55         assert_se(manager_load_startable_unit_or_warn(m, "son.service", NULL, &son) >= 0);
  56         assert_se(manager_load_startable_unit_or_warn(m, "daughter.service", NULL, &daughter) >= 0);
  57         assert_se(manager_load_startable_unit_or_warn(m, "grandchild.service", NULL, &grandchild) >= 0);
  58         assert_se(manager_load_startable_unit_or_warn(m, "parent-deep.slice", NULL, &parent_deep) >= 0);
  59         assert_se(UNIT_DEREF(son->slice) == parent);
  60         assert_se(UNIT_DEREF(daughter->slice) == parent);
  61         assert_se(UNIT_DEREF(parent_deep->slice) == parent);
  62         assert_se(UNIT_DEREF(grandchild->slice) == parent_deep);
  63         root = UNIT_DEREF(parent->slice);
  64
  65         /* Verify per-unit cgroups settings. */
  66         assert_se(unit_get_own_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT));
  67         assert_se(unit_get_own_mask(daughter) == 0);
  68         assert_se(unit_get_own_mask(grandchild) == 0);
  69         assert_se(unit_get_own_mask(parent_deep) == CGROUP_MASK_MEMORY);
  70         assert_se(unit_get_own_mask(parent) == (CGROUP_MASK_IO | CGROUP_MASK_BLKIO));
  71         assert_se(unit_get_own_mask(root) == 0);
  72
  73         /* Verify aggregation of member masks */
  74         assert_se(unit_get_members_mask(son) == 0);
  75         assert_se(unit_get_members_mask(daughter) == 0);
  76         assert_se(unit_get_members_mask(grandchild) == 0);
  77         assert_se(unit_get_members_mask(parent_deep) == 0);
  78         assert_se(unit_get_members_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  79         assert_se(unit_get_members_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  80
  81         /* Verify aggregation of sibling masks. */
  82         assert_se(unit_get_siblings_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  83         assert_se(unit_get_siblings_mask(daughter) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  84         assert_se(unit_get_siblings_mask(grandchild) == 0);
  85         assert_se(unit_get_siblings_mask(parent_deep) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  86         assert_se(unit_get_siblings_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  87         assert_se(unit_get_siblings_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  88
  89         /* Verify aggregation of target masks. */
  90         assert_se(unit_get_target_mask(son) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  91         assert_se(unit_get_target_mask(daughter) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  92         assert_se(unit_get_target_mask(grandchild) == 0);
  93         assert_se(unit_get_target_mask(parent_deep) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  94         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));
  95         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));
  96
  97         return 0;
  98 }
  99
 100 static void test_cg_mask_to_string_one(CGroupMask mask, const char *t) {
 101         _cleanup_free_ char *b = NULL;
 102
 103         assert_se(cg_mask_to_string(mask, &b) >= 0);
 104         assert_se(streq_ptr(b, t));
 105 }
 106
 107 static void test_cg_mask_to_string(void) {
 108         test_cg_mask_to_string_one(0, NULL);
 109         test_cg_mask_to_string_one(_CGROUP_MASK_ALL, "cpu cpuacct io blkio memory devices pids");
 110         test_cg_mask_to_string_one(CGROUP_MASK_CPU, "cpu");
 111         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT, "cpuacct");
 112         test_cg_mask_to_string_one(CGROUP_MASK_IO, "io");
 113         test_cg_mask_to_string_one(CGROUP_MASK_BLKIO, "blkio");
 114         test_cg_mask_to_string_one(CGROUP_MASK_MEMORY, "memory");
 115         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES, "devices");
 116         test_cg_mask_to_string_one(CGROUP_MASK_PIDS, "pids");
 117         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_CPUACCT, "cpu cpuacct");
 118         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_PIDS, "cpu pids");
 119         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT|CGROUP_MASK_PIDS, "cpuacct pids");
 120         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES|CGROUP_MASK_PIDS, "devices pids");
 121         test_cg_mask_to_string_one(CGROUP_MASK_IO|CGROUP_MASK_BLKIO, "io blkio");
 122 }
 123
 124 int main(int argc, char* argv[]) {
 125         int rc = 0;
 126
 127         log_parse_environment();
 128         log_open();
 129
 130         TEST_REQ_RUNNING_SYSTEMD(rc = test_cgroup_mask());
 131         test_cg_mask_to_string();
 132
 133         return rc;
 134 }