[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	7.12 (Berkeley) %G%
 */

/*
 * 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 nfsnode */
	time_t	n_attrstamp;	/* Time stamp (sec) for attributes */
	struct	vattr n_vattr;	/* Vnode attribute cache */
	struct	sillyrename *n_sillyrename;	/* Ptr to silly rename struct */
	u_long	n_size;		/* Current size of file */
	time_t	n_mtime;	/* Prev modify time to maintain data cache consistency*/
	time_t	n_ctime;	/* Prev create time for name cache consistency*/
	int	n_error;	/* Save write error value */
	pid_t	n_lockholder;	/* holder of nfsnode lock */
	pid_t	n_lockwaiter;	/* most recent waiter for nfsnode lock */
	u_long	n_direofoffset;	/* Dir. EOF offset cache */
};

#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	NLOCKED		0x1	/* Lock the node for other local accesses */
#define	NWANT		0x2	/* Want above lock */
#define	NMODIFIED	0x4	/* Might have a modified buffer in bio */
#define	NWRITEERR	0x8	/* Flag write errors so close will know */

/*
 * Prototypes for NFS vnode operations
 */
int	nfs_lookup __P((
		struct vnode *vp,
		struct nameidata *ndp,
		struct proc *p));
int	nfs_create __P((
		struct nameidata *ndp,
		struct vattr *vap,
		struct proc *p));
int	nfs_mknod __P((
		struct nameidata *ndp,
		struct vattr *vap,
		struct ucred *cred,
		struct proc *p));
int	nfs_open __P((
		struct vnode *vp,
		int mode,
		struct ucred *cred,
		struct proc *p));
int	nfs_close __P((
		struct vnode *vp,
		int fflag,
		struct ucred *cred,
		struct proc *p));
int	nfs_access __P((
		struct vnode *vp,
		int mode,
		struct ucred *cred,
		struct proc *p));
int	nfs_getattr __P((
		struct vnode *vp,
		struct vattr *vap,
		struct ucred *cred,
		struct proc *p));
int	nfs_setattr __P((
		struct vnode *vp,
		struct vattr *vap,
		struct ucred *cred,
		struct proc *p));
int	nfs_read __P((
		struct vnode *vp,
		struct uio *uio,
		int ioflag,
		struct ucred *cred));
int	nfs_write __P((
		struct vnode *vp,
		struct uio *uio,
		int ioflag,
		struct ucred *cred));
#define nfs_ioctl ((int (*) __P(( \
		struct vnode *vp, \
		int command, \
		caddr_t data, \
		int fflag, \
		struct ucred *cred, \
		struct proc *p))) enoioctl)
#define nfs_select ((int (*) __P(( \
		struct vnode *vp, \
		int which, \
		int fflags, \
		struct ucred *cred, \
		struct proc *p))) seltrue)
int	nfs_mmap __P((
		struct vnode *vp,
		int fflags,
		struct ucred *cred,
		struct proc *p));
int	nfs_fsync __P((
		struct vnode *vp,
		int fflags,
		struct ucred *cred,
		int waitfor,
		struct proc *p));
#define nfs_seek ((int (*) __P(( \
		struct vnode *vp, \
		off_t oldoff, \
		off_t newoff, \
		struct ucred *cred))) nullop)
int	nfs_remove __P((
		struct nameidata *ndp,
		struct proc *p));
int	nfs_link __P((
		struct vnode *vp,
		struct nameidata *ndp,
		struct proc *p));
int	nfs_rename __P((
		struct nameidata *fndp,
		struct nameidata *tdnp,
		struct proc *p));
int	nfs_mkdir __P((
		struct nameidata *ndp,
		struct vattr *vap,
		struct proc *p));
int	nfs_rmdir __P((
		struct nameidata *ndp,
		struct proc *p));
int	nfs_symlink __P((
		struct nameidata *ndp,
		struct vattr *vap,
		char *target,
		struct proc *p));
int	nfs_readdir __P((
		struct vnode *vp,
		struct uio *uio,
		struct ucred *cred,
		int *eofflagp));
int	nfs_readlink __P((
		struct vnode *vp,
		struct uio *uio,
		struct ucred *cred));
int	nfs_abortop __P((
		struct nameidata *ndp));
int	nfs_inactive __P((
		struct vnode *vp,
		struct proc *p));
int	nfs_reclaim __P((
		struct vnode *vp));
int	nfs_lock __P((
		struct vnode *vp));
int	nfs_unlock __P((
		struct vnode *vp));
int	nfs_bmap __P((
		struct vnode *vp,
		daddr_t bn,
		struct vnode **vpp,
		daddr_t *bnp));
int	nfs_strategy __P((
		struct buf *bp));
int	nfs_print __P((
		struct vnode *vp));
int	nfs_islocked __P((
		struct vnode *vp));
int	nfs_advlock __P((
		struct vnode *vp,
		caddr_t id,
		int op,
		struct flock *fl,
		int flags));
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	*
4476f4b6	10	* @(#)nfsnode.h 7.12 (Berkeley) %G%
a2907882 KM	11	*/
	12
	13	/*
	14	* The nfsnode is the nfs equivalent to ufs's inode. Any similarity
	15	* is purely coincidental.
	16	* There is a unique nfsnode allocated for each active file,
	17	* each current directory, each mounted-on file, text file, and the root.
	18	* An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
	19	*/
	20
	21	struct nfsnode {
	22	struct nfsnode n_chain[2]; / must be first */
	23	nfsv2fh_t n_fh; /* NFS File Handle */
	24	long n_flag; /* Flag for locking.. */
3c5a3f37	25	struct vnode n_vnode; / vnode associated with this nfsnode */
e49b1a6c	26	time_t n_attrstamp; /* Time stamp (sec) for attributes */
a2907882 KM	27	struct vattr n_vattr; /* Vnode attribute cache */
a2907882 KM	28	struct sillyrename n_sillyrename; / Ptr to silly rename struct */
9238aa59 RM	29	u_long n_size; /* Current size of file */
9238aa59 RM	30	time_t n_mtime; /* Prev modify time to maintain data cache consistency*/
c7dd831e	31	time_t n_ctime; /* Prev create time for name cache consistency*/
ffe6f482	32	int n_error; /* Save write error value */
4dae2a39 KM	33	pid_t n_lockholder; /* holder of nfsnode lock */
4dae2a39 KM	34	pid_t n_lockwaiter; /* most recent waiter for nfsnode lock */
e49b1a6c	35	u_long n_direofoffset; /* Dir. EOF offset cache */
a2907882 KM	36	};
	37
	38	#define n_forw n_chain[0]
	39	#define n_back n_chain[1]
	40
	41	#ifdef KERNEL
a2907882 KM	42	/*
	43	* Convert between nfsnode pointers and vnode pointers
	44	*/
	45	#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
3c5a3f37	46	#define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
a2907882 KM	47	#endif
	48	/*
	49	* Flags for n_flag
	50	*/
ffe6f482 KM	51	#define NLOCKED 0x1 /* Lock the node for other local accesses */
	52	#define NWANT 0x2 /* Want above lock */
	53	#define NMODIFIED 0x4 /* Might have a modified buffer in bio */
f0f1cbaa	54	#define NWRITEERR 0x8 /* Flag write errors so close will know */
4476f4b6 KM	55
	56	/*
	57	* Prototypes for NFS vnode operations
	58	*/
	59	int nfs_lookup __P((
	60	struct vnode *vp,
	61	struct nameidata *ndp,
	62	struct proc *p));
	63	int nfs_create __P((
	64	struct nameidata *ndp,
	65	struct vattr *vap,
	66	struct proc *p));
	67	int nfs_mknod __P((
	68	struct nameidata *ndp,
	69	struct vattr *vap,
	70	struct ucred *cred,
	71	struct proc *p));
	72	int nfs_open __P((
	73	struct vnode *vp,
	74	int mode,
	75	struct ucred *cred,
	76	struct proc *p));
	77	int nfs_close __P((
	78	struct vnode *vp,
	79	int fflag,
	80	struct ucred *cred,
	81	struct proc *p));
	82	int nfs_access __P((
	83	struct vnode *vp,
	84	int mode,
	85	struct ucred *cred,
	86	struct proc *p));
	87	int nfs_getattr __P((
	88	struct vnode *vp,
	89	struct vattr *vap,
	90	struct ucred *cred,
	91	struct proc *p));
	92	int nfs_setattr __P((
	93	struct vnode *vp,
	94	struct vattr *vap,
	95	struct ucred *cred,
	96	struct proc *p));
	97	int nfs_read __P((
	98	struct vnode *vp,
	99	struct uio *uio,
	100	int ioflag,
	101	struct ucred *cred));
	102	int nfs_write __P((
	103	struct vnode *vp,
	104	struct uio *uio,
	105	int ioflag,
	106	struct ucred *cred));
	107	#define nfs_ioctl ((int (*) __P(( \
	108	struct vnode *vp, \
	109	int command, \
	110	caddr_t data, \
	111	int fflag, \
	112	struct ucred *cred, \
	113	struct proc *p))) enoioctl)
	114	#define nfs_select ((int (*) __P(( \
	115	struct vnode *vp, \
	116	int which, \
	117	int fflags, \
	118	struct ucred *cred, \
119	struct proc *p))) seltrue)
120	int nfs_mmap __P((
121	struct vnode *vp,
122	int fflags,
123	struct ucred *cred,
124	struct proc *p));
125	int nfs_fsync __P((
126	struct vnode *vp,
127	int fflags,
128	struct ucred *cred,
129	int waitfor,
130	struct proc *p));
131	#define nfs_seek ((int (*) __P(( \
132	struct vnode *vp, \
133	off_t oldoff, \
134	off_t newoff, \
135	struct ucred *cred))) nullop)
136	int nfs_remove __P((
137	struct nameidata *ndp,
138	struct proc *p));
139	int nfs_link __P((
140	struct vnode *vp,
141	struct nameidata *ndp,
142	struct proc *p));
143	int nfs_rename __P((
144	struct nameidata *fndp,
145	struct nameidata *tdnp,
146	struct proc *p));
147	int nfs_mkdir __P((
148	struct nameidata *ndp,
149	struct vattr *vap,
150	struct proc *p));
151	int nfs_rmdir __P((
152	struct nameidata *ndp,
153	struct proc *p));
154	int nfs_symlink __P((
155	struct nameidata *ndp,
156	struct vattr *vap,
157	char *target,
158	struct proc *p));
159	int nfs_readdir __P((
160	struct vnode *vp,
161	struct uio *uio,
162	struct ucred *cred,
163	int *eofflagp));
164	int nfs_readlink __P((
165	struct vnode *vp,
166	struct uio *uio,
167	struct ucred *cred));
168	int nfs_abortop __P((
169	struct nameidata *ndp));
170	int nfs_inactive __P((
171	struct vnode *vp,
172	struct proc *p));
173	int nfs_reclaim __P((
174	struct vnode *vp));
175	int nfs_lock __P((
176	struct vnode *vp));
177	int nfs_unlock __P((
178	struct vnode *vp));
179	int nfs_bmap __P((
180	struct vnode *vp,
181	daddr_t bn,
182	struct vnode **vpp,
183	daddr_t *bnp));
184	int nfs_strategy __P((
185	struct buf *bp));
186	int nfs_print __P((
187	struct vnode *vp));
188	int nfs_islocked __P((
189	struct vnode *vp));
190	int nfs_advlock __P((
191	struct vnode *vp,
192	caddr_t id,
193	int op,
194	struct flock *fl,
195	int flags));