linux_dsm_epyc7002/include/uapi/linux/nsfs.h
Andrey Vagin a7306ed8d9 nsfs: add ioctl to get a parent namespace
Pid and user namepaces are hierarchical. There is no way to discover
parent-child relationships.

In a future we will use this interface to dump and restore nested
namespaces.

Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2016-09-22 19:59:41 -05:00

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C

#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)
#endif /* __LINUX_NSFS_H */