nsfs: update tools header

Ensure all the new uapi bits are visible for the selftests.

Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-21-2e6f823ebdc0@kernel.org
Tested-by: syzbot@syzkaller.appspotmail.com
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/tools/include/uapi/linux/nsfs.h b/tools/include/uapi/linux/nsfs.h
index 33c9b578b3b243b3c9162c0de69fdfcebbb4f77a..a25e38d1c8747da2fa4124668e2fa0f7a4fb4022 100644 (file)
--- a/tools/include/uapi/linux/nsfs.h
+++ b/tools/include/uapi/linux/nsfs.h
@@ -53,6 +53,76 @@ 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 */
+
+enum init_ns_id {
+       IPC_NS_INIT_ID          = 1ULL,
+       UTS_NS_INIT_ID          = 2ULL,
+       USER_NS_INIT_ID         = 3ULL,
+       PID_NS_INIT_ID          = 4ULL,
+       CGROUP_NS_INIT_ID       = 5ULL,
+       TIME_NS_INIT_ID         = 6ULL,
+       NET_NS_INIT_ID          = 7ULL,
+       MNT_NS_INIT_ID          = 8ULL,
+#ifdef __KERNEL__
+       NS_LAST_INIT_ID         = MNT_NS_INIT_ID,
+#endif
+};
+
+enum ns_type {
+       TIME_NS    = (1ULL << 7),  /* CLONE_NEWTIME */
+       MNT_NS     = (1ULL << 17), /* CLONE_NEWNS */
+       CGROUP_NS  = (1ULL << 25), /* CLONE_NEWCGROUP */
+       UTS_NS     = (1ULL << 26), /* CLONE_NEWUTS */
+       IPC_NS     = (1ULL << 27), /* CLONE_NEWIPC */
+       USER_NS    = (1ULL << 28), /* CLONE_NEWUSER */
+       PID_NS     = (1ULL << 29), /* CLONE_NEWPID */
+       NET_NS     = (1ULL << 30), /* CLONE_NEWNET */
+};
+
+/**
+ * struct ns_id_req - namespace ID request structure
+ * @size: size of this structure
+ * @spare: reserved for future use
+ * @filter: filter mask
+ * @ns_id: last namespace id
+ * @user_ns_id: owning user namespace ID
+ *
+ * Structure for passing namespace ID and miscellaneous parameters to
+ * statns(2) and listns(2).
+ *
+ * For statns(2) @param represents the request mask.
+ * For listns(2) @param represents the last listed mount id (or zero).
+ */
+struct ns_id_req {
+       __u32 size;
+       __u32 spare;
+       __u64 ns_id;
+       struct /* listns */ {
+               __u32 ns_type;
+               __u32 spare2;
+               __u64 user_ns_id;
+       };
+};
+
+/*
+ * Special @user_ns_id value that can be passed to listns()
+ */
+#define LISTNS_CURRENT_USER 0xffffffffffffffff /* Caller's userns */
+
+/* List of all ns_id_req versions. */
+#define NS_ID_REQ_SIZE_VER0 32 /* sizeof first published struct */
+
 #endif /* __LINUX_NSFS_H */