src/lxc/lxc_conf.h

   1 /*
   2  * lxc: linux Container library
   3  *
   4  * (C) Copyright IBM Corp. 2007, 2008
   5  *
   6  * Authors:
   7  * Daniel Lezcano <dlezcano at fr.ibm.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  */
  23 #ifndef _conf_h
  24 #define _conf_h
  25
  26 #include <netinet/in.h>
  27
  28 enum {
  29         EMPTY,
  30         VETH,
  31         MACVLAN,
  32         PHYS,
  33         MAXCONFTYPE,
  34 };
  35
  36 /*
  37  * Defines the structure to configure an ipv4 address
  38  * @address   : ipv4 address
  39  * @broadcast : ipv4 broadcast address
  40  * @mask      : network mask
  41  */
  42 struct lxc_inetdev {
  43         struct in_addr addr;
  44         struct in_addr bcast;
  45         int prefix;
  46 };
  47
  48 struct lxc_route {
  49         struct in_addr addr;
  50 };
  51
  52 /*
  53  * Defines the structure to configure an ipv6 address
  54  * @flags     : set the address up
  55  * @address   : ipv6 address
  56  * @broadcast : ipv6 broadcast address
  57  * @mask      : network mask
  58  */
  59 struct lxc_inet6dev {
  60         struct in6_addr addr;
  61         struct in6_addr bcast;
  62         struct in6_addr acast;
  63         int prefix;
  64 };
  65
  66 struct lxc_route6 {
  67         struct in6_addr addr;
  68 };
  69 /*
  70  * Defines a structure to configure a network device
  71  * @ifname : network device name
  72  * @flags  : flag of the network device (IFF_UP, ... )
  73  * @ipv4   : a list of ipv4 addresses to be set on the network device
  74  * @ipv6   : a list of ipv6 addresses to be set on the network device
  75  */
  76 struct lxc_netdev {
  77         int flags;
  78         char *ifname;
  79         char *newname;
  80         char *hwaddr;
  81         struct lxc_list ipv4;
  82         struct lxc_list ipv6;
  83         struct lxc_list route4;
  84         struct lxc_list route6;
  85 };
  86
  87 /*
  88  * Defines the kind of the network to use
  89  * @type : the type of the network virtualization
  90  * @phys : phys configuration type
  91  * @veth : veth configuration type
  92  * @macvlan : macvlan configuration type
  93  */
  94 struct lxc_network {
  95         int type;
  96         struct lxc_list netdev;
  97 };
  98
  99 /*
 100  * Defines a generic struct to configure the control group.
 101  * It is up to the programmer to specify the right subsystem.
 102  * @subsystem : the targetted subsystem
 103  * @value     : the value to set
 104  */
 105 struct lxc_cgroup {
 106         char *subsystem;
 107         char *value;
 108 };
 109
 110 /*
 111  * Defines the global container configuration
 112  * @rootfs  : the root directory to run the container
 113  * @mount   : the list of mount points
 114  * @network : the network configuration
 115  * @utsname : the container utsname
 116  */
 117 struct lxc_conf {
 118         char *rootfs;
 119         char *fstab;
 120         struct utsname *utsname;
 121         struct lxc_list cgroup;
 122         struct lxc_list networks;
 123 };
 124
 125 /*
 126  * Configure the external resources for the container
 127  */
 128 extern int lxc_configure(const char *name, struct lxc_conf *conf);
 129
 130 /*
 131  * Remove the resources created by the configuration
 132  */
 133 extern int lxc_unconfigure(const char *name);
 134
 135 extern int conf_create_network(const char *name, pid_t pid);
 136
 137 extern int conf_destroy_network(const char *name);
 138
 139 /*
 140  * Configure the container from inside
 141  */
 142 extern int lxc_setup(const char *name);
 143
 144 extern int conf_has(const char *name, const char *info);
 145
 146 #define conf_has_fstab(__name)   conf_has(__name, "fstab")
 147 #define conf_has_rootfs(__name)  conf_has(__name, "rootfs")
 148 #define conf_has_utsname(__name) conf_has(__name, "utsname")
 149 #define conf_has_network(__name) conf_has(__name, "network")
 150 #define conf_has_cgroup(__name) conf_has(__name, "cgroup")
 151
 152 #endif