include/namespace.h

   1 #ifndef __NAMESPACE_H__
   2 #define __NAMESPACE_H__ 1
   3
   4 #include <sched.h>
   5 #include <sys/mount.h>
   6 #include <unistd.h>
   7 #include <sys/syscall.h>
   8 #include <errno.h>
   9
  10 #define NETNS_RUN_DIR "/var/run/netns"
  11 #define NETNS_ETC_DIR "/etc/netns"
  12
  13 #ifndef CLONE_NEWNET
  14 #define CLONE_NEWNET 0x40000000 /* New network namespace (lo, device, names sockets, etc) */
  15 #endif
  16
  17 #ifndef MNT_DETACH
  18 #define MNT_DETACH      0x00000002      /* Just detach from the tree */
  19 #endif /* MNT_DETACH */
  20
  21 /* sys/mount.h may be out too old to have these */
  22 #ifndef MS_REC
  23 #define MS_REC          16384
  24 #endif
  25
  26 #ifndef MS_SLAVE
  27 #define MS_SLAVE        (1 << 19)
  28 #endif
  29
  30 #ifndef MS_SHARED
  31 #define MS_SHARED       (1 << 20)
  32 #endif
  33
  34 #ifndef HAVE_SETNS
  35 static inline int setns(int fd, int nstype)
  36 {
  37 #ifdef __NR_setns
  38         return syscall(__NR_setns, fd, nstype);
  39 #else
  40         errno = ENOSYS;
  41         return -1;
  42 #endif
  43 }
  44 #endif /* HAVE_SETNS */
  45
  46 int netns_switch(char *netns);
  47 int netns_get_fd(const char *netns);
  48 int netns_foreach(int (*func)(char *nsname, void *arg), void *arg);
  49
  50 struct netns_func {
  51         int (*func)(char *nsname, void *arg);
  52         void *arg;
  53 };
  54
  55 #endif /* __NAMESPACE_H__ */