src/test/test-cgroup-mask.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2013 David Strauss
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <stdio.h>
  21
  22 #include "macro.h"
  23 #include "manager.h"
  24 #include "rm-rf.h"
  25 #include "test-helper.h"
  26 #include "tests.h"
  27 #include "unit.h"
  28
  29 static int test_cgroup_mask(void) {
  30         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  31         Manager *m = NULL;
  32         Unit *son, *daughter, *parent, *root, *grandchild, *parent_deep;
  33         FILE *serial = NULL;
  34         FDSet *fdset = NULL;
  35         int r;
  36
  37         r = enter_cgroup_subroot();
  38         if (r == -ENOMEDIUM) {
  39                 puts("Skipping test: cgroupfs not available");
  40                 return EXIT_TEST_SKIP;
  41         }
  42
  43         /* Prepare the manager. */
  44         assert_se(set_unit_path(get_testdata_dir("")) >= 0);
  45         assert_se(runtime_dir = setup_fake_runtime_dir());
  46         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_MINIMAL, &m);
  47         if (IN_SET(r, -EPERM, -EACCES)) {
  48                 puts("manager_new: Permission denied. Skipping test.");
  49                 return EXIT_TEST_SKIP;
  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 = (uint64_t) -1;
  62
  63         assert_se(r >= 0);
  64         assert_se(manager_startup(m, serial, fdset) >= 0);
  65
  66         /* Load units and verify hierarchy. */
  67         assert_se(manager_load_unit(m, "parent.slice", NULL, NULL, &parent) >= 0);
  68         assert_se(manager_load_unit(m, "son.service", NULL, NULL, &son) >= 0);
  69         assert_se(manager_load_unit(m, "daughter.service", NULL, NULL, &daughter) >= 0);
  70         assert_se(manager_load_unit(m, "grandchild.service", NULL, NULL, &grandchild) >= 0);
  71         assert_se(manager_load_unit(m, "parent-deep.slice", NULL, NULL, &parent_deep) >= 0);
  72         assert_se(parent->load_state == UNIT_LOADED);
  73         assert_se(son->load_state == UNIT_LOADED);
  74         assert_se(daughter->load_state == UNIT_LOADED);
  75         assert_se(grandchild->load_state == UNIT_LOADED);
  76         assert_se(parent_deep->load_state == UNIT_LOADED);
  77         assert_se(UNIT_DEREF(son->slice) == parent);
  78         assert_se(UNIT_DEREF(daughter->slice) == parent);
  79         assert_se(UNIT_DEREF(parent_deep->slice) == parent);
  80         assert_se(UNIT_DEREF(grandchild->slice) == parent_deep);
  81         root = UNIT_DEREF(parent->slice);
  82
  83         /* Verify per-unit cgroups settings. */
  84         assert_se(unit_get_own_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT));
  85         assert_se(unit_get_own_mask(daughter) == 0);
  86         assert_se(unit_get_own_mask(grandchild) == 0);
  87         assert_se(unit_get_own_mask(parent_deep) == CGROUP_MASK_MEMORY);
  88         assert_se(unit_get_own_mask(parent) == (CGROUP_MASK_IO | CGROUP_MASK_BLKIO));
  89         assert_se(unit_get_own_mask(root) == 0);
  90
  91         /* Verify aggregation of member masks */
  92         assert_se(unit_get_members_mask(son) == 0);
  93         assert_se(unit_get_members_mask(daughter) == 0);
  94         assert_se(unit_get_members_mask(grandchild) == 0);
  95         assert_se(unit_get_members_mask(parent_deep) == 0);
  96         assert_se(unit_get_members_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  97         assert_se(unit_get_members_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  98
  99         /* Verify aggregation of sibling masks. */
 100         assert_se(unit_get_siblings_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
 101         assert_se(unit_get_siblings_mask(daughter) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
 102         assert_se(unit_get_siblings_mask(grandchild) == 0);
 103         assert_se(unit_get_siblings_mask(parent_deep) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
 104         assert_se(unit_get_siblings_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 105         assert_se(unit_get_siblings_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_IO | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
 106
 107         /* Verify aggregation of target masks. */
 108         assert_se(unit_get_target_mask(son) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 109         assert_se(unit_get_target_mask(daughter) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 110         assert_se(unit_get_target_mask(grandchild) == 0);
 111         assert_se(unit_get_target_mask(parent_deep) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 112         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));
 113         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));
 114
 115         manager_free(m);
 116
 117         return 0;
 118 }
 119
 120 int main(int argc, char* argv[]) {
 121         int rc = 0;
 122
 123         TEST_REQ_RUNNING_SYSTEMD(rc = test_cgroup_mask());
 124
 125         return rc;
 126 }