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-rw-r--r--include/uapi/linux/fcntl.h1
-rw-r--r--include/uapi/linux/nsfs.h18
2 files changed, 17 insertions, 2 deletions
diff --git a/include/uapi/linux/fcntl.h b/include/uapi/linux/fcntl.h
index f291ab4f94eb..3741ea1b73d8 100644
--- a/include/uapi/linux/fcntl.h
+++ b/include/uapi/linux/fcntl.h
@@ -111,6 +111,7 @@
#define PIDFD_SELF_THREAD_GROUP -10001 /* Current thread group leader. */
#define FD_PIDFS_ROOT -10002 /* Root of the pidfs filesystem */
+#define FD_NSFS_ROOT -10003 /* Root of the nsfs filesystem */
#define FD_INVALID -10009 /* Invalid file descriptor: -10000 - EBADF = -10009 */
/* Generic flags for the *at(2) family of syscalls. */
diff --git a/include/uapi/linux/nsfs.h b/include/uapi/linux/nsfs.h
index 97d8d80d139f..e098759ec917 100644
--- a/include/uapi/linux/nsfs.h
+++ b/include/uapi/linux/nsfs.h
@@ -16,8 +16,6 @@
#define NS_GET_NSTYPE _IO(NSIO, 0x3)
/* Get owner UID (in the caller's user namespace) for a user namespace */
#define NS_GET_OWNER_UID _IO(NSIO, 0x4)
-/* Get the id for a mount namespace */
-#define NS_GET_MNTNS_ID _IOR(NSIO, 0x5, __u64)
/* Translate pid from target pid namespace into the caller's pid namespace. */
#define NS_GET_PID_FROM_PIDNS _IOR(NSIO, 0x6, int)
/* Return thread-group leader id of pid in the callers pid namespace. */
@@ -42,6 +40,10 @@ struct mnt_ns_info {
/* Get previous namespace. */
#define NS_MNT_GET_PREV _IOR(NSIO, 12, struct mnt_ns_info)
+/* Retrieve namespace identifiers. */
+#define NS_GET_MNTNS_ID _IOR(NSIO, 5, __u64)
+#define NS_GET_ID _IOR(NSIO, 13, __u64)
+
enum init_ns_ino {
IPC_NS_INIT_INO = 0xEFFFFFFFU,
UTS_NS_INIT_INO = 0xEFFFFFFEU,
@@ -51,6 +53,18 @@ enum init_ns_ino {
TIME_NS_INIT_INO = 0xEFFFFFFAU,
NET_NS_INIT_INO = 0xEFFFFFF9U,
MNT_NS_INIT_INO = 0xEFFFFFF8U,
+#ifdef __KERNEL__
+ MNT_NS_ANON_INO = 0xEFFFFFF7U,
+#endif
+};
+
+struct nsfs_file_handle {
+ __u64 ns_id;
+ __u32 ns_type;
+ __u32 ns_inum;
};
+#define NSFS_FILE_HANDLE_SIZE_VER0 16 /* sizeof first published struct */
+#define NSFS_FILE_HANDLE_SIZE_LATEST sizeof(struct nsfs_file_handle) /* sizeof latest published struct */
+
#endif /* __LINUX_NSFS_H */