include/namespace.h

   1
   2 /*
   3  * No copyright is claimed.  This code is in the public domain; do with
   4  * it what you wish.
   5  *
   6  * Compat code so unshare and setns can be used with older libcs
   7  */
   8 #ifndef UTIL_LINUX_NAMESPACE_H
   9 # define UTIL_LINUX_NAMESPACE_H
  10
  11 # include <sched.h>
  12
  13 # ifndef CLONE_NEWNS
  14 #  define CLONE_NEWNS 0x00020000
  15 # endif
  16 # ifndef CLONE_NEWCGROUP
  17 #  define CLONE_NEWCGROUP 0x02000000
  18 # endif
  19 # ifndef CLONE_NEWUTS
  20 #  define CLONE_NEWUTS 0x04000000
  21 # endif
  22 # ifndef CLONE_NEWIPC
  23 #  define CLONE_NEWIPC 0x08000000
  24 # endif
  25 # ifndef CLONE_NEWNET
  26 #  define CLONE_NEWNET 0x40000000
  27 # endif
  28 # ifndef CLONE_NEWUSER
  29 #  define CLONE_NEWUSER 0x10000000
  30 # endif
  31 # ifndef CLONE_NEWPID
  32 #  define CLONE_NEWPID 0x20000000
  33 # endif
  34 # ifndef CLONE_NEWTIME
  35 #  define CLONE_NEWTIME 0x00000080
  36 # endif
  37
  38 # if !defined(HAVE_UNSHARE) || !defined(HAVE_SETNS)
  39 #  include <sys/syscall.h>
  40 # endif
  41
  42 # if !defined(HAVE_UNSHARE) && defined(SYS_unshare)
  43 static inline int unshare(int flags)
  44 {
  45         return syscall(SYS_unshare, flags);
  46 }
  47 # endif
  48
  49 # if !defined(HAVE_SETNS) && defined(SYS_setns)
  50 static inline int setns(int fd, int nstype)
  51 {
  52         return syscall(SYS_setns, fd, nstype);
  53 }
  54 # endif
  55
  56 #endif  /* UTIL_LINUX_NAMESPACE_H */