[unix-history] / usr / src / sys / nfs / nfsnode.h

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Rick Macklem at The University of Guelph.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)nfsnode.h	7.22 (Berkeley) %G%
 */

/*
 * Silly rename structure that hangs off the nfsnode until the name
 * can be removed by nfs_inactive()
 */
struct sillyrename {
	struct	ucred *s_cred;
	struct	vnode *s_dvp;
	long	s_namlen;
	char	s_name[20];
};

/*
 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity
 * is purely coincidental.
 * There is a unique nfsnode allocated for each active file,
 * each current directory, each mounted-on file, text file, and the root.
 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
 */

struct nfsnode {
	struct	nfsnode *n_chain[2];	/* must be first */
	nfsv2fh_t n_fh;			/* NFS File Handle */
	long	n_flag;			/* Flag for locking.. */
	struct	vnode *n_vnode;		/* vnode associated with this node */
	time_t	n_attrstamp;		/* Time stamp for cached attributes */
	struct	vattr n_vattr;		/* Vnode attribute cache */
	struct	sillyrename *n_sillyrename; /* Ptr to silly rename struct */
	off_t	n_size;			/* Current size of file */
	int	n_error;		/* Save write error value */
	u_long	n_direofoffset;		/* Dir. EOF offset cache */
	union {
		struct {
			time_t	un_mtime; /* Prev modify time. */
			time_t	un_ctime; /* Prev create time. */
		} un_nfs;
		struct {
			u_quad_t un_brev; /* Modify rev when cached */
			u_quad_t un_lrev; /* Modify rev for lease */
			time_t	un_expiry; /* Lease expiry time */
			struct	nfsnode *un_tnext; /* Nqnfs timer chain */
			struct	nfsnode *un_tprev;
		} un_nqnfs;
	} n_un;
	struct	sillyrename n_silly;	/* Silly rename struct */
	long	n_spare[9];		/* Up to a power of 2 */
};

#define	n_mtime		n_un.un_nfs.un_mtime
#define	n_ctime		n_un.un_nfs.un_ctime
#define	n_brev		n_un.un_nqnfs.un_brev
#define	n_lrev		n_un.un_nqnfs.un_lrev
#define	n_expiry	n_un.un_nqnfs.un_expiry
#define	n_tnext		n_un.un_nqnfs.un_tnext
#define	n_tprev		n_un.un_nqnfs.un_tprev

#define	n_forw		n_chain[0]
#define	n_back		n_chain[1]

#ifdef KERNEL
/*
 * Convert between nfsnode pointers and vnode pointers
 */
#define VTONFS(vp)	((struct nfsnode *)(vp)->v_data)
#define NFSTOV(np)	((struct vnode *)(np)->n_vnode)
#endif
/*
 * Flags for n_flag
 */
#define	NMODIFIED	0x0004	/* Might have a modified buffer in bio */
#define	NWRITEERR	0x0008	/* Flag write errors so close will know */
#define	NQNFSNONCACHE	0x0020	/* Non-cachable lease */
#define	NQNFSWRITE	0x0040	/* Write lease */
#define	NQNFSEVICTED	0x0080	/* Has been evicted */

/*
 * Prototypes for NFS vnode operations
 */
int	nfs_lookup __P((struct vop_lookup_args *));
int	nfs_create __P((struct vop_create_args *));
int	nfs_mknod __P((struct vop_mknod_args *));
int	nfs_open __P((struct vop_open_args *));
int	nfs_close __P((struct vop_close_args *));
int	nfs_access __P((struct vop_access_args *));
int	nfs_getattr __P((struct vop_getattr_args *));
int	nfs_setattr __P((struct vop_setattr_args *));
int	nfs_read __P((struct vop_read_args *));
int	nfs_write __P((struct vop_write_args *));
#define nfs_ioctl ((int (*) __P((struct  vop_ioctl_args *)))enoioctl)
#define nfs_select ((int (*) __P((struct  vop_select_args *)))seltrue)
int	nfs_mmap __P((struct vop_mmap_args *));
int	nfs_fsync __P((struct vop_fsync_args *));
#define nfs_seek ((int (*) __P((struct  vop_seek_args *)))nullop)
int	nfs_remove __P((struct vop_remove_args *));
int	nfs_link __P((struct vop_link_args *));
int	nfs_rename __P((struct vop_rename_args *));
int	nfs_mkdir __P((struct vop_mkdir_args *));
int	nfs_rmdir __P((struct vop_rmdir_args *));
int	nfs_symlink __P((struct vop_symlink_args *));
int	nfs_readdir __P((struct vop_readdir_args *));
int	nfs_readlink __P((struct vop_readlink_args *));
int	nfs_abortop __P((struct vop_abortop_args *));
int	nfs_inactive __P((struct vop_inactive_args *));
int	nfs_reclaim __P((struct vop_reclaim_args *));
int	nfs_lock __P((struct vop_lock_args *));
int	nfs_unlock __P((struct vop_unlock_args *));
int	nfs_bmap __P((struct vop_bmap_args *));
int	nfs_strategy __P((struct vop_strategy_args *));
int	nfs_print __P((struct vop_print_args *));
int	nfs_islocked __P((struct vop_islocked_args *));
int	nfs_advlock __P((struct vop_advlock_args *));
int	nfs_blkatoff __P((struct vop_blkatoff_args *));
int	nfs_vget __P((struct vop_vget_args *));
int	nfs_valloc __P((struct vop_valloc_args *));
int	nfs_vfree __P((struct vop_vfree_args *));
int	nfs_truncate __P((struct vop_truncate_args *));
int	nfs_update __P((struct vop_update_args *));
int	bwrite();		/* NFS needs a bwrite routine */
Commit	Line	Data
a2907882 KM	1	/*
	2	* Copyright (c) 1989 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Rick Macklem at The University of Guelph.
	7	*
dbf0c423	8	* %sccs.include.redist.c%
a2907882	9	*
d98ec5bf	10	* @(#)nfsnode.h 7.22 (Berkeley) %G%
a2907882 KM	11	*/
a2907882 KM	12
2c5b44a2 KM	13	/*
	14	* Silly rename structure that hangs off the nfsnode until the name
	15	* can be removed by nfs_inactive()
	16	*/
	17	struct sillyrename {
	18	struct ucred *s_cred;
	19	struct vnode *s_dvp;
	20	long s_namlen;
	21	char s_name[20];
	22	};
	23
a2907882 KM	24	/*
	25	* The nfsnode is the nfs equivalent to ufs's inode. Any similarity
	26	* is purely coincidental.
	27	* There is a unique nfsnode allocated for each active file,
	28	* each current directory, each mounted-on file, text file, and the root.
	29	* An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
	30	*/
	31
	32	struct nfsnode {
	33	struct nfsnode n_chain[2]; / must be first */
	34	nfsv2fh_t n_fh; /* NFS File Handle */
	35	long n_flag; /* Flag for locking.. */
2c5b44a2 KM	36	struct vnode n_vnode; / vnode associated with this node */
	37	time_t n_attrstamp; /* Time stamp for cached attributes */
	38	struct vattr n_vattr; /* Vnode attribute cache */
	39	struct sillyrename n_sillyrename; / Ptr to silly rename struct */
3dddedcb	40	off_t n_size; /* Current size of file */
2c5b44a2 KM	41	int n_error; /* Save write error value */
	42	u_long n_direofoffset; /* Dir. EOF offset cache */
	43	union {
	44	struct {
	45	time_t un_mtime; /* Prev modify time. */
	46	time_t un_ctime; /* Prev create time. */
	47	} un_nfs;
	48	struct {
	49	u_quad_t un_brev; /* Modify rev when cached */
	50	u_quad_t un_lrev; /* Modify rev for lease */
	51	time_t un_expiry; /* Lease expiry time */
	52	struct nfsnode un_tnext; / Nqnfs timer chain */
	53	struct nfsnode *un_tprev;
	54	} un_nqnfs;
	55	} n_un;
	56	struct sillyrename n_silly; /* Silly rename struct */
3dddedcb	57	long n_spare[9]; /* Up to a power of 2 */
a2907882 KM	58	};
a2907882 KM	59
2c5b44a2 KM	60	#define n_mtime n_un.un_nfs.un_mtime
	61	#define n_ctime n_un.un_nfs.un_ctime
	62	#define n_brev n_un.un_nqnfs.un_brev
	63	#define n_lrev n_un.un_nqnfs.un_lrev
	64	#define n_expiry n_un.un_nqnfs.un_expiry
	65	#define n_tnext n_un.un_nqnfs.un_tnext
	66	#define n_tprev n_un.un_nqnfs.un_tprev
	67
a2907882 KM	68	#define n_forw n_chain[0]
	69	#define n_back n_chain[1]
	70
	71	#ifdef KERNEL
a2907882 KM	72	/*
	73	* Convert between nfsnode pointers and vnode pointers
	74	*/
	75	#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
3c5a3f37	76	#define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
a2907882 KM	77	#endif
	78	/*
	79	* Flags for n_flag
	80	*/
2c5b44a2 KM	81	#define NMODIFIED 0x0004 /* Might have a modified buffer in bio */
	82	#define NWRITEERR 0x0008 /* Flag write errors so close will know */
	83	#define NQNFSNONCACHE 0x0020 /* Non-cachable lease */
	84	#define NQNFSWRITE 0x0040 /* Write lease */
	85	#define NQNFSEVICTED 0x0080 /* Has been evicted */
4476f4b6 KM	86
	87	/*
	88	* Prototypes for NFS vnode operations
	89	*/
9342689a JH	90	int nfs_lookup __P((struct vop_lookup_args *));
	91	int nfs_create __P((struct vop_create_args *));
	92	int nfs_mknod __P((struct vop_mknod_args *));
	93	int nfs_open __P((struct vop_open_args *));
	94	int nfs_close __P((struct vop_close_args *));
	95	int nfs_access __P((struct vop_access_args *));
	96	int nfs_getattr __P((struct vop_getattr_args *));
	97	int nfs_setattr __P((struct vop_setattr_args *));
	98	int nfs_read __P((struct vop_read_args *));
	99	int nfs_write __P((struct vop_write_args *));
	100	#define nfs_ioctl ((int () __P((struct vop_ioctl_args )))enoioctl)
	101	#define nfs_select ((int () __P((struct vop_select_args )))seltrue)
	102	int nfs_mmap __P((struct vop_mmap_args *));
	103	int nfs_fsync __P((struct vop_fsync_args *));
	104	#define nfs_seek ((int () __P((struct vop_seek_args )))nullop)
	105	int nfs_remove __P((struct vop_remove_args *));
	106	int nfs_link __P((struct vop_link_args *));
	107	int nfs_rename __P((struct vop_rename_args *));
	108	int nfs_mkdir __P((struct vop_mkdir_args *));
	109	int nfs_rmdir __P((struct vop_rmdir_args *));
	110	int nfs_symlink __P((struct vop_symlink_args *));
	111	int nfs_readdir __P((struct vop_readdir_args *));
	112	int nfs_readlink __P((struct vop_readlink_args *));
	113	int nfs_abortop __P((struct vop_abortop_args *));
	114	int nfs_inactive __P((struct vop_inactive_args *));
	115	int nfs_reclaim __P((struct vop_reclaim_args *));
	116	int nfs_lock __P((struct vop_lock_args *));
	117	int nfs_unlock __P((struct vop_unlock_args *));
	118	int nfs_bmap __P((struct vop_bmap_args *));
	119	int nfs_strategy __P((struct vop_strategy_args *));
	120	int nfs_print __P((struct vop_print_args *));
	121	int nfs_islocked __P((struct vop_islocked_args *));
	122	int nfs_advlock __P((struct vop_advlock_args *));
	123	int nfs_blkatoff __P((struct vop_blkatoff_args *));
	124	int nfs_vget __P((struct vop_vget_args *));
	125	int nfs_valloc __P((struct vop_valloc_args *));
d98ec5bf	126	int nfs_vfree __P((struct vop_vfree_args *));
9342689a JH	127	int nfs_truncate __P((struct vop_truncate_args *));
9342689a JH	128	int nfs_update __P((struct vop_update_args *));
9cde1597	129	int bwrite(); /* NFS needs a bwrite routine */