| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | #ifndef __LINUX_NSFS_H |
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| 3 | #define __LINUX_NSFS_H |
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| 4 | |
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| 5 | #include <linux/ioctl.h> |
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| 6 | #include <linux/types.h> |
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| 7 | |
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| 8 | #define NSIO 0xb7 |
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| 9 | |
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| 10 | /* Returns a file descriptor that refers to an owning user namespace */ |
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| 11 | #define NS_GET_USERNS _IO(NSIO, 0x1) |
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| 12 | /* Returns a file descriptor that refers to a parent namespace */ |
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| 13 | #define NS_GET_PARENT _IO(NSIO, 0x2) |
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| 14 | /* Returns the type of namespace (CLONE_NEW* value) referred to by |
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| 15 | file descriptor */ |
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| 16 | #define NS_GET_NSTYPE _IO(NSIO, 0x3) |
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| 17 | /* Get owner UID (in the caller's user namespace) for a user namespace */ |
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| 18 | #define NS_GET_OWNER_UID _IO(NSIO, 0x4) |
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| 19 | /* Get the id for a mount namespace */ |
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| 20 | #define NS_GET_MNTNS_ID _IOR(NSIO, 0x5, __u64) |
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| 21 | /* Translate pid from target pid namespace into the caller's pid namespace. */ |
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| 22 | #define NS_GET_PID_FROM_PIDNS _IOR(NSIO, 0x6, int) |
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| 23 | /* Return thread-group leader id of pid in the callers pid namespace. */ |
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| 24 | #define NS_GET_TGID_FROM_PIDNS _IOR(NSIO, 0x7, int) |
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| 25 | /* Translate pid from caller's pid namespace into a target pid namespace. */ |
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| 26 | #define NS_GET_PID_IN_PIDNS _IOR(NSIO, 0x8, int) |
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| 27 | /* Return thread-group leader id of pid in the target pid namespace. */ |
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| 28 | #define NS_GET_TGID_IN_PIDNS _IOR(NSIO, 0x9, int) |
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| 29 | |
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| 30 | struct mnt_ns_info { |
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| 31 | __u32 size; |
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| 32 | __u32 nr_mounts; |
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| 33 | __u64 mnt_ns_id; |
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| 34 | }; |
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| 35 | |
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| 36 | #define MNT_NS_INFO_SIZE_VER0 16 /* size of first published struct */ |
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| 37 | |
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| 38 | /* Get information about namespace. */ |
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| 39 | #define NS_MNT_GET_INFO _IOR(NSIO, 10, struct mnt_ns_info) |
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| 40 | /* Get next namespace. */ |
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| 41 | #define NS_MNT_GET_NEXT _IOR(NSIO, 11, struct mnt_ns_info) |
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| 42 | /* Get previous namespace. */ |
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| 43 | #define NS_MNT_GET_PREV _IOR(NSIO, 12, struct mnt_ns_info) |
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| 44 | |
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| 45 | #endif /* __LINUX_NSFS_H */ |
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| 46 | |
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