1 files changed, 56 insertions, 0 deletions
diff --git a/fs/pnode.h b/fs/pnode.h
new file mode 100644
index 000000000..988f1aa9b
--- /dev/null
+++ b/fs/pnode.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  linux/fs/pnode.h
+ *
+ * (C) Copyright IBM Corporation 2005.
+ */
+#ifndef _LINUX_PNODE_H
+#define _LINUX_PNODE_H
+
+#include <linux/list.h>
+#include "mount.h"
+
+#define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
+#define IS_MNT_SLAVE(m) ((m)->mnt_master)
+#define IS_MNT_NEW(m)  (!(m)->mnt_ns || is_anon_ns((m)->mnt_ns))
+#define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
+#define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)
+#define IS_MNT_MARKED(m) ((m)->mnt.mnt_flags & MNT_MARKED)
+#define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
+#define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
+#define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
+
+#define CL_EXPIRE    		0x01
+#define CL_SLAVE     		0x02
+#define CL_COPY_UNBINDABLE	0x04
+#define CL_MAKE_SHARED 		0x08
+#define CL_PRIVATE 		0x10
+#define CL_SHARED_TO_SLAVE	0x20
+#define CL_COPY_MNT_NS_FILE	0x40
+
+#define CL_COPY_ALL		(CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
+
+static inline void set_mnt_shared(struct mount *mnt)
+{
+	mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
+	mnt->mnt.mnt_flags |= MNT_SHARED;
+}
+
+void change_mnt_propagation(struct mount *, int);
+int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
+		struct hlist_head *);
+int propagate_umount(struct list_head *);
+int propagate_mount_busy(struct mount *, int);
+void propagate_mount_unlock(struct mount *);
+void mnt_release_group_id(struct mount *);
+int get_dominating_id(struct mount *mnt, const struct path *root);
+int mnt_get_count(struct mount *mnt);
+void mnt_set_mountpoint(struct mount *, struct mountpoint *,
+			struct mount *);
+void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
+			   struct mount *mnt);
+struct mount *copy_tree(struct mount *, struct dentry *, int);
+bool is_path_reachable(struct mount *, struct dentry *,
+			 const struct path *root);
+int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
+#endif /* _LINUX_PNODE_H */