18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * linux/fs/pnode.h 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * (C) Copyright IBM Corporation 2005. 68c2ecf20Sopenharmony_ci */ 78c2ecf20Sopenharmony_ci#ifndef _LINUX_PNODE_H 88c2ecf20Sopenharmony_ci#define _LINUX_PNODE_H 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci#include <linux/list.h> 118c2ecf20Sopenharmony_ci#include "mount.h" 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ci#define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED) 148c2ecf20Sopenharmony_ci#define IS_MNT_SLAVE(m) ((m)->mnt_master) 158c2ecf20Sopenharmony_ci#define IS_MNT_NEW(m) (!(m)->mnt_ns || is_anon_ns((m)->mnt_ns)) 168c2ecf20Sopenharmony_ci#define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED) 178c2ecf20Sopenharmony_ci#define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE) 188c2ecf20Sopenharmony_ci#define IS_MNT_MARKED(m) ((m)->mnt.mnt_flags & MNT_MARKED) 198c2ecf20Sopenharmony_ci#define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED) 208c2ecf20Sopenharmony_ci#define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED) 218c2ecf20Sopenharmony_ci#define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED) 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci#define CL_EXPIRE 0x01 248c2ecf20Sopenharmony_ci#define CL_SLAVE 0x02 258c2ecf20Sopenharmony_ci#define CL_COPY_UNBINDABLE 0x04 268c2ecf20Sopenharmony_ci#define CL_MAKE_SHARED 0x08 278c2ecf20Sopenharmony_ci#define CL_PRIVATE 0x10 288c2ecf20Sopenharmony_ci#define CL_SHARED_TO_SLAVE 0x20 298c2ecf20Sopenharmony_ci#define CL_COPY_MNT_NS_FILE 0x40 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci#define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE) 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_cistatic inline void set_mnt_shared(struct mount *mnt) 348c2ecf20Sopenharmony_ci{ 358c2ecf20Sopenharmony_ci mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK; 368c2ecf20Sopenharmony_ci mnt->mnt.mnt_flags |= MNT_SHARED; 378c2ecf20Sopenharmony_ci} 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_civoid change_mnt_propagation(struct mount *, int); 408c2ecf20Sopenharmony_ciint propagate_mnt(struct mount *, struct mountpoint *, struct mount *, 418c2ecf20Sopenharmony_ci struct hlist_head *); 428c2ecf20Sopenharmony_ciint propagate_umount(struct list_head *); 438c2ecf20Sopenharmony_ciint propagate_mount_busy(struct mount *, int); 448c2ecf20Sopenharmony_civoid propagate_mount_unlock(struct mount *); 458c2ecf20Sopenharmony_civoid mnt_release_group_id(struct mount *); 468c2ecf20Sopenharmony_ciint get_dominating_id(struct mount *mnt, const struct path *root); 478c2ecf20Sopenharmony_ciint mnt_get_count(struct mount *mnt); 488c2ecf20Sopenharmony_civoid mnt_set_mountpoint(struct mount *, struct mountpoint *, 498c2ecf20Sopenharmony_ci struct mount *); 508c2ecf20Sopenharmony_civoid mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, 518c2ecf20Sopenharmony_ci struct mount *mnt); 528c2ecf20Sopenharmony_cistruct mount *copy_tree(struct mount *, struct dentry *, int); 538c2ecf20Sopenharmony_cibool is_path_reachable(struct mount *, struct dentry *, 548c2ecf20Sopenharmony_ci const struct path *root); 558c2ecf20Sopenharmony_ciint count_mounts(struct mnt_namespace *ns, struct mount *mnt); 568c2ecf20Sopenharmony_ci#endif /* _LINUX_PNODE_H */ 57