Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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#include <linux/types.h>
7
8#define NSIO 0xb7
9
10/* Returns a file descriptor that refers to an owning user namespace */
11#define NS_GET_USERNS _IO(NSIO, 0x1)
12/* Returns a file descriptor that refers to a parent namespace */
13#define NS_GET_PARENT _IO(NSIO, 0x2)
14/* Returns the type of namespace (CLONE_NEW* value) referred to by
15 file descriptor */
16#define NS_GET_NSTYPE _IO(NSIO, 0x3)
17/* Get owner UID (in the caller's user namespace) for a user namespace */
18#define NS_GET_OWNER_UID _IO(NSIO, 0x4)
19/* Get the id for a mount namespace */
20#define NS_GET_MNTNS_ID _IOR(NSIO, 0x5, __u64)
21/* Translate pid from target pid namespace into the caller's pid namespace. */
22#define NS_GET_PID_FROM_PIDNS _IOR(NSIO, 0x6, int)
23/* Return thread-group leader id of pid in the callers pid namespace. */
24#define NS_GET_TGID_FROM_PIDNS _IOR(NSIO, 0x7, int)
25/* Translate pid from caller's pid namespace into a target pid namespace. */
26#define NS_GET_PID_IN_PIDNS _IOR(NSIO, 0x8, int)
27/* Return thread-group leader id of pid in the target pid namespace. */
28#define NS_GET_TGID_IN_PIDNS _IOR(NSIO, 0x9, int)
29
30struct mnt_ns_info {
31 __u32 size;
32 __u32 nr_mounts;
33 __u64 mnt_ns_id;
34};
35
36#define MNT_NS_INFO_SIZE_VER0 16 /* size of first published struct */
37
38/* Get information about namespace. */
39#define NS_MNT_GET_INFO _IOR(NSIO, 10, struct mnt_ns_info)
40/* Get next namespace. */
41#define NS_MNT_GET_NEXT _IOR(NSIO, 11, struct mnt_ns_info)
42/* Get previous namespace. */
43#define NS_MNT_GET_PREV _IOR(NSIO, 12, struct mnt_ns_info)
44
45#endif /* __LINUX_NSFS_H */