root/include/uapi/linux/nsfs.h

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INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef __LINUX_NSFS_H
   3 #define __LINUX_NSFS_H
   4 
   5 #include <linux/ioctl.h>
   6 
   7 #define NSIO    0xb7
   8 
   9 /* Returns a file descriptor that refers to an owning user namespace */
  10 #define NS_GET_USERNS           _IO(NSIO, 0x1)
  11 /* Returns a file descriptor that refers to a parent namespace */
  12 #define NS_GET_PARENT           _IO(NSIO, 0x2)
  13 /* Returns the type of namespace (CLONE_NEW* value) referred to by
  14    file descriptor */
  15 #define NS_GET_NSTYPE           _IO(NSIO, 0x3)
  16 /* Get owner UID (in the caller's user namespace) for a user namespace */
  17 #define NS_GET_OWNER_UID        _IO(NSIO, 0x4)
  18 
  19 #endif /* __LINUX_NSFS_H */
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