1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun #ifndef __LINUX_NSFS_H 3*4882a593Smuzhiyun #define __LINUX_NSFS_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/ioctl.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define NSIO 0xb7 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun /* Returns a file descriptor that refers to an owning user namespace */ 10*4882a593Smuzhiyun #define NS_GET_USERNS _IO(NSIO, 0x1) 11*4882a593Smuzhiyun /* Returns a file descriptor that refers to a parent namespace */ 12*4882a593Smuzhiyun #define NS_GET_PARENT _IO(NSIO, 0x2) 13*4882a593Smuzhiyun /* Returns the type of namespace (CLONE_NEW* value) referred to by 14*4882a593Smuzhiyun file descriptor */ 15*4882a593Smuzhiyun #define NS_GET_NSTYPE _IO(NSIO, 0x3) 16*4882a593Smuzhiyun /* Get owner UID (in the caller's user namespace) for a user namespace */ 17*4882a593Smuzhiyun #define NS_GET_OWNER_UID _IO(NSIO, 0x4) 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #endif /* __LINUX_NSFS_H */ 20