sys/sys/mount.h

29  *	@(#)mount.h	8.21 (Berkeley) 5/20/95
46  * NOTE: When changing statfs structure, mount structure, MNT_* flags or
47  * MNTK_* flags also update DDB show mount command in vfs_subr.c.
73 	uint64_t f_flags;		/* copy of mount exported flags */
81 	uint64_t f_syncwrites;		/* count of sync writes since mount */
82 	uint64_t f_asyncwrites;		/* count of async writes since mount */
83 	uint64_t f_syncreads;		/* count of sync reads since mount */
84 	uint64_t f_asyncreads;		/* count of async reads since mount */
113 	int	f_flags;		/* copy of mount exported flags */
114 	long	f_syncwrites;		/* count of sync writes since mount */
115 	long	f_asyncwrites;		/* count of async writes since mount */
118 	long	f_syncreads;		/* count of sync reads since mount */
119 	long	f_asyncreads;		/* count of async reads since mount */
157 struct mount {
158 	struct mtx	mnt_mtx;		/* mount structure interlock */
159 	int		mnt_gen;		/* struct mount generation */
161 	TAILQ_ENTRY(mount) mnt_list;		/* (m) mount list */
174 	struct vfsoptlist *mnt_opt;		/* current mount options */
192 	TAILQ_ENTRY(mount) mnt_upper_link;	/* (m) we in the all uppers */
193 	TAILQ_HEAD(, mount) mnt_uppers;		/* (m) upper mounts over us*/
199 struct vnode *__mnt_vnode_next_all(struct vnode **mvp, struct mount *mp);
200 struct vnode *__mnt_vnode_first_all(struct vnode **mvp, struct mount *mp);
201 void          __mnt_vnode_markerfree_all(struct vnode **mvp, struct mount *mp);
218 struct vnode *__mnt_vnode_next_active(struct vnode **mvp, struct mount *mp);
219 struct vnode *__mnt_vnode_first_active(struct vnode **mvp, struct mount *mp);
220 void          __mnt_vnode_markerfree_active(struct vnode **mvp, struct mount *);
266  * NFS export related mount flags.
289  * but the 'mount' program may need changing to handle this.
316  *      mount(2) and MNT_BYFSID is only used for unmount(2) it's harmless.
318 #define	MNT_UPDATE	0x0000000000010000ULL /* not real mount, just update */
329  * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
330  * past the mount point.  This keeps the subtree stable during mounts
340  * the mount.
370 MNT_SHARED_WRITES(struct mount *mp)
377 MNT_EXTENDED_SHARED(struct mount *mp)
396  * mount specific header files.
416 	fsid_t	fh_fsid;	/* Filesystem id of mount point */
436  * Export arguments for local filesystem mount calls.
459 	struct mount	*np_mount;	/* Mountpoint of exported fs */
466  * mount time to identify the requested filesystem.
477 	struct	vfsoptdecl *vfc_opts;	/* mount options */
606 typedef int vfs_unmount_t(struct mount *mp, int mntflags);
607 typedef int vfs_root_t(struct mount *mp, int flags, struct vnode **vpp);
608 typedef	int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, void *arg);
609 typedef	int vfs_statfs_t(struct mount *mp, struct statfs *sbp);
610 typedef	int vfs_sync_t(struct mount *mp, int waitfor);
611 typedef	int vfs_vget_t(struct mount *mp, ino_t ino, int flags,
613 typedef	int vfs_fhtovp_t(struct mount *mp, struct fid *fhp,
615 typedef	int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
620 typedef	int vfs_extattrctl_t(struct mount *mp, int cmd,
623 typedef	int vfs_mount_t(struct mount *mp);
624 typedef int vfs_sysctl_t(struct mount *mp, fsctlop_t op,
626 typedef void vfs_susp_clean_t(struct mount *mp);
627 typedef void vfs_notify_lowervp_t(struct mount *mp, struct vnode *lowervp);
628 typedef void vfs_purge_t(struct mount *mp);
655 	struct mount *mp__;						\
833 int	dounmount(struct mount *, int, struct thread *);
844 void	vfs_mount_destroy(struct mount *);
867 	    (struct mount *, struct netexport *, struct export_args *);
868 void	vfs_msync(struct mount *, int);
869 int	vfs_busy(struct mount *, int);
870 int	vfs_export			 /* process mount export info */
871 	    (struct mount *, struct export_args *);
872 void	vfs_allocate_syncvnode(struct mount *);
873 void	vfs_deallocate_syncvnode(struct mount *);
876 void	vfs_getnewfsid(struct mount *);
877 struct cdev *vfs_getrootfsid(struct mount *);
878 struct	mount *vfs_getvfs(fsid_t *);      /* return vfs given fsid */
879 struct	mount *vfs_busyfs(fsid_t *);
881 void	vfs_mount_error(struct mount *, const char *, ...);
882 void	vfs_mountroot(void);			/* mount our root filesystem */
883 void	vfs_mountedfrom(struct mount *, const char *from);
887 void	vfs_ref(struct mount *);
888 void	vfs_rel(struct mount *);
889 struct mount *vfs_mount_alloc(struct vnode *, struct vfsconf *, const char *,
891 int	vfs_suser(struct mount *, struct thread *);
892 void	vfs_unbusy(struct mount *);
894 extern	TAILQ_HEAD(mntlist, mount) mountlist;	/* mounted filesystem list */
937 int	mount(const char *, const char *, int, void *);