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 "manager.h"
  25 #include "unit.h"
  26 #include "macro.h"
  27 #include "test-helper.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         assert_se(r >= 0);
  44         assert_se(manager_startup(m, serial, fdset) >= 0);
  45
  46         /* Load units and verify hierarchy. */
  47         assert_se(manager_load_unit(m, "parent.slice", NULL, NULL, &parent) >= 0);
  48         assert_se(manager_load_unit(m, "son.service", NULL, NULL, &son) >= 0);
  49         assert_se(manager_load_unit(m, "daughter.service", NULL, NULL, &daughter) >= 0);
  50         assert_se(manager_load_unit(m, "grandchild.service", NULL, NULL, &grandchild) >= 0);
  51         assert_se(manager_load_unit(m, "parent-deep.slice", NULL, NULL, &parent_deep) >= 0);
  52         assert_se(parent->load_state == UNIT_LOADED);
  53         assert_se(son->load_state == UNIT_LOADED);
  54         assert_se(daughter->load_state == UNIT_LOADED);
  55         assert_se(grandchild->load_state == UNIT_LOADED);
  56         assert_se(parent_deep->load_state == UNIT_LOADED);
  57         assert_se(UNIT_DEREF(son->slice) == parent);
  58         assert_se(UNIT_DEREF(daughter->slice) == parent);
  59         assert_se(UNIT_DEREF(parent_deep->slice) == parent);
  60         assert_se(UNIT_DEREF(grandchild->slice) == parent_deep);
  61         root = UNIT_DEREF(parent->slice);
  62
  63         /* Verify per-unit cgroups settings. */
  64         assert_se(unit_get_own_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT));
  65         assert_se(unit_get_own_mask(daughter) == 0);
  66         assert_se(unit_get_own_mask(grandchild) == 0);
  67         assert_se(unit_get_own_mask(parent_deep) == CGROUP_MASK_MEMORY);
  68         assert_se(unit_get_own_mask(parent) == CGROUP_MASK_BLKIO);
  69         assert_se(unit_get_own_mask(root) == 0);
  70
  71         /* Verify aggregation of member masks */
  72         assert_se(unit_get_members_mask(son) == 0);
  73         assert_se(unit_get_members_mask(daughter) == 0);
  74         assert_se(unit_get_members_mask(grandchild) == 0);
  75         assert_se(unit_get_members_mask(parent_deep) == 0);
  76         assert_se(unit_get_members_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  77         assert_se(unit_get_members_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  78
  79         /* Verify aggregation of sibling masks. */
  80         assert_se(unit_get_siblings_mask(son) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  81         assert_se(unit_get_siblings_mask(daughter) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  82         assert_se(unit_get_siblings_mask(grandchild) == 0);
  83         assert_se(unit_get_siblings_mask(parent_deep) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY));
  84         assert_se(unit_get_siblings_mask(parent) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  85         assert_se(unit_get_siblings_mask(root) == (CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY));
  86
  87         /* Verify aggregation of target masks. */
  88         assert_se(unit_get_target_mask(son) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  89         assert_se(unit_get_target_mask(daughter) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  90         assert_se(unit_get_target_mask(grandchild) == 0);
  91         assert_se(unit_get_target_mask(parent_deep) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  92         assert_se(unit_get_target_mask(parent) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  93         assert_se(unit_get_target_mask(root) == ((CGROUP_MASK_CPU | CGROUP_MASK_CPUACCT | CGROUP_MASK_BLKIO | CGROUP_MASK_MEMORY) & m->cgroup_supported));
  94
  95         manager_free(m);
  96
  97         return 0;
  98 }
  99
 100 int main(int argc, char* argv[]) {
 101         int rc = 0;
 102         TEST_REQ_RUNNING_SYSTEMD(rc = test_cgroup_mask());
 103         return rc;
 104 }