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	: Linux in-mum-web1954.main-hosting.eu 5.14.0-570.26.1.el9_6.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Jul 16 09:12:04 EDT 2025 x86_64

: /usr/include/linux/

files >> //usr/include/linux/nsfs.h

 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __LINUX_NSFS_H
#define __LINUX_NSFS_H

#include <linux/ioctl.h>

#define NSIO	0xb7

/* Returns a file descriptor that refers to an owning user namespace */
#define NS_GET_USERNS		_IO(NSIO, 0x1)
/* Returns a file descriptor that refers to a parent namespace */
#define NS_GET_PARENT		_IO(NSIO, 0x2)
/* Returns the type of namespace (CLONE_NEW* value) referred to by
   file descriptor */
#define NS_GET_NSTYPE		_IO(NSIO, 0x3)
/* Get owner UID (in the caller's user namespace) for a user namespace */
#define NS_GET_OWNER_UID	_IO(NSIO, 0x4)

#endif /* __LINUX_NSFS_H */