src/tests/criu_check_feature.c

   1 /* liblxcapi
   2  *
   3  * Copyright © 2017 Adrian Reber <areber@redhat.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20
  21 #include <string.h>
  22 #include <limits.h>
  23
  24 #include "lxc/lxccontainer.h"
  25 #include "lxctest.h"
  26
  27 int main(int argc, char *argv[])
  28 {
  29         struct lxc_container *c;
  30         struct migrate_opts m_opts;
  31         int ret = EXIT_FAILURE;
  32
  33         /* Test the feature check interface,
  34          * we actually do not need a container. */
  35         c = lxc_container_new("check_feature", NULL);
  36         if (!c) {
  37                 lxc_error("%s", "Failed to create container \"check_feature\"");
  38                 exit(ret);
  39         }
  40
  41         if (c->is_defined(c)) {
  42                 lxc_error("%s\n", "Container \"check_feature\" is defined");
  43                 goto on_error_put;
  44         }
  45
  46         /* check the migrate API call with wrong 'cmd' */
  47         if (!c->migrate(c, UINT_MAX, &m_opts, sizeof(struct migrate_opts))) {
  48                 /* This should failed */
  49                 lxc_error("%s\n", "Migrate API calls with command UINT_MAX did not fail");
  50                 goto on_error_put;
  51         }
  52
  53         /* do the actual feature check for memory tracking */
  54         m_opts.features_to_check = FEATURE_MEM_TRACK;
  55         if (c->migrate(c, MIGRATE_FEATURE_CHECK, &m_opts, sizeof(struct migrate_opts))) {
  56                 lxc_debug("%s\n", "System does not support \"FEATURE_MEM_TRACK\".");
  57         }
  58
  59         /* check for lazy pages */
  60         m_opts.features_to_check = FEATURE_LAZY_PAGES;
  61         if (c->migrate(c, MIGRATE_FEATURE_CHECK, &m_opts, sizeof(struct migrate_opts))) {
  62                 lxc_debug("%s\n", "System does not support \"FEATURE_LAZY_PAGES\".");
  63         }
  64
  65         /* check for lazy pages and memory tracking */
  66         m_opts.features_to_check = FEATURE_LAZY_PAGES | FEATURE_MEM_TRACK;
  67         if (c->migrate(c, MIGRATE_FEATURE_CHECK, &m_opts, sizeof(struct migrate_opts))) {
  68                 if (m_opts.features_to_check == FEATURE_LAZY_PAGES)
  69                         lxc_debug("%s\n", "System does not support \"FEATURE_MEM_TRACK\"");
  70                 else if (m_opts.features_to_check == FEATURE_MEM_TRACK)
  71                         lxc_debug("%s\n", "System does not support \"FEATURE_LAZY_PAGES\"");
  72                 else
  73                         lxc_debug("%s\n", "System does not support \"FEATURE_MEM_TRACK\" "
  74                                         "and \"FEATURE_LAZY_PAGES\"");
  75         }
  76
  77         /* test for unknown feature; once there are 64 features to test
  78          * this will be valid... */
  79         m_opts.features_to_check = -1ULL;
  80         if (!c->migrate(c, MIGRATE_FEATURE_CHECK, &m_opts, sizeof(struct migrate_opts))) {
  81                 lxc_error("%s\n", "Unsupported feature supported, which is strange.");
  82                 goto on_error_put;
  83         }
  84
  85         ret = EXIT_SUCCESS;
  86
  87 on_error_put:
  88         lxc_container_put(c);
  89         if (ret == EXIT_SUCCESS)
  90                 lxc_debug("%s\n", "All criu feature check tests passed");
  91
  92         exit(ret);
  93 }