src/test/test-cgroup-mask.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2013 David Strauss
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <stdio.h>
  23
  24 #include "macro.h"
  25 #include "manager.h"
  26 #include "test-helper.h"
  27 #include "unit.h"
  28
  29 static int test_cgroup_mask(void) {
  30         Manager *m = NULL;
  31         Unit *son, *daughter, *parent, *root, *grandchild, *parent_deep;
  32         FILE *serial = NULL;
  33         FDSet *fdset = NULL;
  34         int r;
  35
  36         /* Prepare the manager. */
  37         assert_se(set_unit_path(TEST_DIR) >= 0);
  38         r = manager_new(MANAGER_USER, true, &m);
  39         if (r == -EPERM || r == -EACCES) {
  40                 puts("manager_new: Permission denied. Skipping test.");
  41                 return EXIT_TEST_SKIP;
  42         }
  43
  44         /* Turn off all kinds of default accouning, so that we can
  45          * verify the masks resulting of our configuration and nothing
  46          * else. */
  47         m->default_cpu_accounting =
  48                 m->default_memory_accounting =
  49                 m->default_blockio_accounting =
  50                 m->default_tasks_accounting = false;
  51         m->default_tasks_max = (uint64_t) -1;
  52
  53         assert_se(r >= 0);
  54         assert_se(manager_startup(m, serial, fdset) >= 0);
  55
  56         /* Load units and verify hierarchy. */
  57         assert_se(manager_load_unit(m, "parent.slice", NULL, NULL, &parent) >= 0);
  58         assert_se(manager_load_unit(m, "son.service", NULL, NULL, &son) >= 0);
  59         assert_se(manager_load_unit(m, "daughter.service", NULL, NULL, &daughter) >= 0);
  60         assert_se(manager_load_unit(m, "grandchild.service", NULL, NULL, &grandchild) >= 0);
  61         assert_se(manager_load_unit(m, "parent-deep.slice", NULL, NULL, &parent_deep) >= 0);
  62         assert_se(parent->load_state == UNIT_LOADED);
  63         assert_se(son->load_state == UNIT_LOADED);
  64         assert_se(daughter->load_state == UNIT_LOADED);
  65         assert_se(grandchild->load_state == UNIT_LOADED);
  66         assert_se(parent_deep->load_state == UNIT_LOADED);
  67         assert_se(UNIT_DEREF(son->slice) == parent);
  68         assert_se(UNIT_DEREF(daughter->slice) == parent);
  69         assert_se(UNIT_DEREF(parent_deep->slice) == parent);
  70         assert_se(UNIT_DEREF(grandchild->slice) == parent_deep);
  71         root = UNIT_DEREF(parent->slice);
  72
  73         /* Verify per-unit cgroups settings. */
  74         assert_se(unit_get_own_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT));
  75         assert_se(unit_get_own_mask(daughter) == 0);
  76         assert_se(unit_get_own_mask(grandchild) == 0);
  77         assert_se(unit_get_own_mask(parent_deep) == CGROUP_MASK_MEMORY);
  78         assert_se(unit_get_own_mask(parent) == CGROUP_MASK_BLKIO);
  79         assert_se(unit_get_own_mask(root) == 0);
  80
  81         /* Verify aggregation of member masks */
  82         assert_se(unit_get_members_mask(son) == 0);
  83         assert_se(unit_get_members_mask(daughter) == 0);
  84         assert_se(unit_get_members_mask(grandchild) == 0);
  85         assert_se(unit_get_members_mask(parent_deep) == 0);
  86         assert_se(unit_get_members_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  87         assert_se(unit_get_members_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  88
  89         /* Verify aggregation of sibling masks. */
  90         assert_se(unit_get_siblings_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  91         assert_se(unit_get_siblings_mask(daughter) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  92         assert_se(unit_get_siblings_mask(grandchild) == 0);
  93         assert_se(unit_get_siblings_mask(parent_deep) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  94         assert_se(unit_get_siblings_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  95         assert_se(unit_get_siblings_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  96
  97         /* Verify aggregation of target masks. */
  98         assert_se(unit_get_target_mask(son) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  99         assert_se(unit_get_target_mask(daughter) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 100         assert_se(unit_get_target_mask(grandchild) == 0);
 101         assert_se(unit_get_target_mask(parent_deep) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 102         assert_se(unit_get_target_mask(parent) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 103         assert_se(unit_get_target_mask(root) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
 104
 105         manager_free(m);
 106
 107         return 0;
 108 }
 109
 110 int main(int argc, char* argv[]) {
 111         int rc = 0;
 112         TEST_REQ_RUNNING_SYSTEMD(rc = test_cgroup_mask());
 113         return rc;
 114 }