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