src/test/test-cgroup-mask.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2013 David Strauss
   6
   7   systemd is free software; you can redistribute it and/or modify it
   8   under the terms of the GNU Lesser General Public License as published by
   9   the Free Software Foundation; either version 2.1 of the License, or
  10   (at your option) any later version.
  11
  12   systemd is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   Lesser General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  19 ***/
  20
  21 #include <stdio.h>
  22
  23 #include "macro.h"
  24 #include "manager.h"
  25 #include "rm-rf.h"
  26 #include "string-util.h"
  27 #include "test-helper.h"
  28 #include "tests.h"
  29 #include "unit.h"
  30
  31 static int test_cgroup_mask(void) {
  32         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  33         Manager *m = NULL;
  34         Unit *son, *daughter, *parent, *root, *grandchild, *parent_deep;
  35         FILE *serial = NULL;
  36         FDSet *fdset = NULL;
  37         int r;
  38
  39         r = enter_cgroup_subroot();
  40         if (r == -ENOMEDIUM) {
  41                 puts("Skipping test: cgroupfs not available");
  42                 return EXIT_TEST_SKIP;
  43         }
  44
  45         /* Prepare the manager. */
  46         assert_se(set_unit_path(get_testdata_dir("")) >= 0);
  47         assert_se(runtime_dir = setup_fake_runtime_dir());
  48         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_MINIMAL, &m);
  49         if (IN_SET(r, -EPERM, -EACCES)) {
  50                 puts("manager_new: Permission denied. Skipping test.");
  51                 return EXIT_TEST_SKIP;
  52         }
  53         assert_se(r >= 0);
  54
  55         /* Turn off all kinds of default accouning, so that we can
  56          * verify the masks resulting of our configuration and nothing
  57          * else. */
  58         m->default_cpu_accounting =
  59                 m->default_memory_accounting =
  60                 m->default_blockio_accounting =
  61                 m->default_io_accounting =
  62                 m->default_tasks_accounting = false;
  63         m->default_tasks_max = (uint64_t) -1;
  64
  65         assert_se(r >= 0);
  66         assert_se(manager_startup(m, serial, fdset) >= 0);
  67
  68         /* Load units and verify hierarchy. */
  69         assert_se(manager_load_unit(m, "parent.slice", NULL, NULL, &parent) >= 0);
  70         assert_se(manager_load_unit(m, "son.service", NULL, NULL, &son) >= 0);
  71         assert_se(manager_load_unit(m, "daughter.service", NULL, NULL, &daughter) >= 0);
  72         assert_se(manager_load_unit(m, "grandchild.service", NULL, NULL, &grandchild) >= 0);
  73         assert_se(manager_load_unit(m, "parent-deep.slice", NULL, NULL, &parent_deep) >= 0);
  74         assert_se(parent->load_state == UNIT_LOADED);
  75         assert_se(son->load_state == UNIT_LOADED);
  76         assert_se(daughter->load_state == UNIT_LOADED);
  77         assert_se(grandchild->load_state == UNIT_LOADED);
  78         assert_se(parent_deep->load_state == UNIT_LOADED);
  79         assert_se(UNIT_DEREF(son->slice) == parent);
  80         assert_se(UNIT_DEREF(daughter->slice) == parent);
  81         assert_se(UNIT_DEREF(parent_deep->slice) == parent);
  82         assert_se(UNIT_DEREF(grandchild->slice) == parent_deep);
  83         root = UNIT_DEREF(parent->slice);
  84
  85         /* Verify per-unit cgroups settings. */
  86         assert_se(unit_get_own_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT));
  87         assert_se(unit_get_own_mask(daughter) == 0);
  88         assert_se(unit_get_own_mask(grandchild) == 0);
  89         assert_se(unit_get_own_mask(parent_deep) == CGROUP_MASK_MEMORY);
  90         assert_se(unit_get_own_mask(parent) == (CGROUP_MASK_IO | CGROUP_MASK_BLKIO));
  91         assert_se(unit_get_own_mask(root) == 0);
  92
  93         /* Verify aggregation of member masks */
  94         assert_se(unit_get_members_mask(son) == 0);
  95         assert_se(unit_get_members_mask(daughter) == 0);
  96         assert_se(unit_get_members_mask(grandchild) == 0);
  97         assert_se(unit_get_members_mask(parent_deep) == 0);
  98         assert_se(unit_get_members_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  99         assert_se(unit_get_members_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 100
 101         /* Verify aggregation of sibling masks. */
 102         assert_se(unit_get_siblings_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
 103         assert_se(unit_get_siblings_mask(daughter) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
 104         assert_se(unit_get_siblings_mask(grandchild) == 0);
 105         assert_se(unit_get_siblings_mask(parent_deep) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
 106         assert_se(unit_get_siblings_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 107         assert_se(unit_get_siblings_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 108
 109         /* Verify aggregation of target masks. */
 110         assert_se(unit_get_target_mask(son) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 111         assert_se(unit_get_target_mask(daughter) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 112         assert_se(unit_get_target_mask(grandchild) == 0);
 113         assert_se(unit_get_target_mask(parent_deep) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 114         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));
 115         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));
 116
 117         manager_free(m);
 118
 119         return 0;
 120 }
 121
 122 static void test_cg_mask_to_string_one(CGroupMask mask, const char *t) {
 123         _cleanup_free_ char *b = NULL;
 124
 125         assert_se(cg_mask_to_string(mask, &b) >= 0);
 126         assert_se(streq_ptr(b, t));
 127 }
 128
 129 static void test_cg_mask_to_string(void) {
 130         test_cg_mask_to_string_one(0, NULL);
 131         test_cg_mask_to_string_one(_CGROUP_MASK_ALL, "cpu cpuacct io blkio memory devices pids");
 132         test_cg_mask_to_string_one(CGROUP_MASK_CPU, "cpu");
 133         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT, "cpuacct");
 134         test_cg_mask_to_string_one(CGROUP_MASK_IO, "io");
 135         test_cg_mask_to_string_one(CGROUP_MASK_BLKIO, "blkio");
 136         test_cg_mask_to_string_one(CGROUP_MASK_MEMORY, "memory");
 137         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES, "devices");
 138         test_cg_mask_to_string_one(CGROUP_MASK_PIDS, "pids");
 139         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_CPUACCT, "cpu cpuacct");
 140         test_cg_mask_to_string_one(CGROUP_MASK_CPU|CGROUP_MASK_PIDS, "cpu pids");
 141         test_cg_mask_to_string_one(CGROUP_MASK_CPUACCT|CGROUP_MASK_PIDS, "cpuacct pids");
 142         test_cg_mask_to_string_one(CGROUP_MASK_DEVICES|CGROUP_MASK_PIDS, "devices pids");
 143         test_cg_mask_to_string_one(CGROUP_MASK_IO|CGROUP_MASK_BLKIO, "io blkio");
 144 }
 145
 146 int main(int argc, char* argv[]) {
 147         int rc = 0;
 148
 149         log_parse_environment();
 150         log_open();
 151
 152         TEST_REQ_RUNNING_SYSTEMD(rc = test_cgroup_mask());
 153         test_cg_mask_to_string();
 154
 155         return rc;
 156 }