src/lxc/namespace.h

   1 /*
   2  * lxc: linux Container library
   3  *
   4  * (C) Copyright IBM Corp. 2007, 2009
   5  *
   6  * Authors:
   7  * Daniel Lezcano <daniel.lezcano at free.fr>
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23 #ifndef __LXC_NAMESPACE_H
  24 #define __LXC_NAMESPACE_H
  25
  26 #include <sys/syscall.h>
  27 #include <sched.h>
  28
  29 #include "config.h"
  30
  31 #ifndef CLONE_FS
  32 #  define CLONE_FS                0x00000200
  33 #endif
  34 #ifndef CLONE_NEWNS
  35 #  define CLONE_NEWNS             0x00020000
  36 #endif
  37 #ifndef CLONE_NEWCGROUP
  38 #  define CLONE_NEWCGROUP         0x02000000
  39 #endif
  40 #ifndef CLONE_NEWUTS
  41 #  define CLONE_NEWUTS            0x04000000
  42 #endif
  43 #ifndef CLONE_NEWIPC
  44 #  define CLONE_NEWIPC            0x08000000
  45 #endif
  46 #ifndef CLONE_NEWUSER
  47 #  define CLONE_NEWUSER           0x10000000
  48 #endif
  49 #ifndef CLONE_NEWPID
  50 #  define CLONE_NEWPID            0x20000000
  51 #endif
  52 #ifndef CLONE_NEWNET
  53 #  define CLONE_NEWNET            0x40000000
  54 #endif
  55
  56 enum {
  57         LXC_NS_USER,
  58         LXC_NS_MNT,
  59         LXC_NS_PID,
  60         LXC_NS_UTS,
  61         LXC_NS_IPC,
  62         LXC_NS_NET,
  63         LXC_NS_CGROUP,
  64         LXC_NS_MAX
  65 };
  66
  67 extern const struct ns_info {
  68         const char *proc_name;
  69         int clone_flag;
  70         const char *flag_name;
  71 } ns_info[LXC_NS_MAX];
  72
  73 #if defined(__ia64__)
  74 int __clone2(int (*__fn) (void *__arg), void *__child_stack_base,
  75              size_t __child_stack_size, int __flags, void *__arg, ...);
  76 #else
  77 int clone(int (*fn)(void *), void *child_stack,
  78         int flags, void *arg, ...
  79         /* pid_t *ptid, struct user_desc *tls, pid_t *ctid */ );
  80 #endif
  81
  82 extern pid_t lxc_clone(int (*fn)(void *), void *arg, int flags);
  83
  84 extern int lxc_namespace_2_cloneflag(char *namespace);
  85 extern int lxc_fill_namespace_flags(char *flaglist, int *flags);
  86
  87 #endif