/* * linux/fs/pnode.h * * (C) Copyright IBM Corporation 2005. * Released under GPL v2. * */ #ifndef _LINUX_PNODE_H #define _LINUX_PNODE_H #include #include "mount.h" #ifdef CONFIG_RKP_NS_PROT #define IS_MNT_SHARED(m) ((m)->mnt->mnt_flags & MNT_SHARED) #else #define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED) #endif #define IS_MNT_SLAVE(m) ((m)->mnt_master) #define IS_MNT_NEW(m) (!(m)->mnt_ns) #ifdef CONFIG_RKP_NS_PROT #define CLEAR_MNT_SHARED(m) rkp_reset_mnt_flags((m)->mnt,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) rkp_set_mnt_flags((m)->mnt,MNT_MARKED) #define CLEAR_MNT_MARK(m) rkp_reset_mnt_flags((m)->mnt,MNT_MARKED) #define IS_MNT_LOCKED(m) ((m)->mnt->mnt_flags & MNT_LOCKED) #else #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) #endif #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_UNPRIVILEGED 0x40 #define CL_COPY_MNT_NS_FILE 0x80 #define CL_COPY_ALL (CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE) #ifdef CONFIG_RKP_NS_PROT extern void rkp_assign_mnt_flags(struct vfsmount *,int); static inline void set_mnt_shared(struct mount *mnt) { int mnt_flags = mnt->mnt->mnt_flags; mnt_flags &= ~MNT_SHARED_MASK; mnt_flags |= MNT_SHARED; rkp_assign_mnt_flags(mnt->mnt,mnt_flags); } #else static inline void set_mnt_shared(struct mount *mnt) { mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK; mnt->mnt.mnt_flags |= MNT_SHARED; } #endif 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 propagate_remount(struct mount *); void mnt_release_group_id(struct mount *); int get_dominating_id(struct mount *mnt, const struct path *root); unsigned 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 */