tools/virt-host-validate-lxc.c

   1 /*
   2  * virt-host-validate-lxc.c: Sanity check a LXC hypervisor host
   3  *
   4  * Copyright (C) 2012 Red Hat, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but 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
  17  * License along with this library.  If not, see
  18  * <http://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 #include <config.h>
  23
  24 #include "virt-host-validate-lxc.h"
  25 #include "virt-host-validate-common.h"
  26 #include "vircgroup.h"
  27
  28 int virHostValidateLXC(void)
  29 {
  30     int ret = 0;
  31
  32     if (virHostValidateLinuxKernel("LXC", (2 << 16) | (6 << 8) | 26,
  33                                    VIR_HOST_VALIDATE_FAIL,
  34                                    _("Upgrade to a kernel supporting namespaces")) < 0)
  35         ret = -1;
  36
  37     if (virHostValidateNamespace("LXC", "ipc",
  38                                  VIR_HOST_VALIDATE_FAIL,
  39                                  _("IPC namespace support is required")) < 0)
  40         ret = -1;
  41
  42     if (virHostValidateNamespace("LXC", "mnt",
  43                                  VIR_HOST_VALIDATE_FAIL,
  44                                  _("Mount namespace support is required")) < 0)
  45         ret = -1;
  46
  47     if (virHostValidateNamespace("LXC", "pid",
  48                                  VIR_HOST_VALIDATE_FAIL,
  49                                  _("PID namespace support is required")) < 0)
  50         ret = -1;
  51
  52     if (virHostValidateNamespace("LXC", "uts",
  53                                  VIR_HOST_VALIDATE_FAIL,
  54                                  _("UTS namespace support is required")) < 0)
  55         ret = -1;
  56
  57     if (virHostValidateNamespace("LXC", "net",
  58                                  VIR_HOST_VALIDATE_WARN,
  59                                  _("Network namespace support is recommended")) < 0)
  60         ret = -1;
  61
  62     if (virHostValidateNamespace("LXC", "user",
  63                                  VIR_HOST_VALIDATE_WARN,
  64                                  _("User namespace support is recommended")) < 0)
  65         ret = -1;
  66
  67     if (virHostValidateCGroupControllers("LXC",
  68                                          (1 << VIR_CGROUP_CONTROLLER_MEMORY) |
  69                                          (1 << VIR_CGROUP_CONTROLLER_CPU) |
  70                                          (1 << VIR_CGROUP_CONTROLLER_CPUACCT) |
  71                                          (1 << VIR_CGROUP_CONTROLLER_CPUSET) |
  72                                          (1 << VIR_CGROUP_CONTROLLER_DEVICES) |
  73                                          (1 << VIR_CGROUP_CONTROLLER_FREEZER) |
  74                                          (1 << VIR_CGROUP_CONTROLLER_BLKIO),
  75                                          VIR_HOST_VALIDATE_FAIL) < 0) {
  76         ret = -1;
  77     }
  78
  79 #if WITH_FUSE
  80     if (virHostValidateDeviceExists("LXC", "/sys/fs/fuse/connections",
  81                                     VIR_HOST_VALIDATE_FAIL,
  82                                     _("Load the 'fuse' module to enable /proc/ overrides")) < 0)
  83         ret = -1;
  84 #endif
  85
  86     return ret;
  87 }