NetBSD/sys/nfs/nfsmount.h

/*	$NetBSD: nfsmount.h,v 1.14 1997/07/17 23:54:33 fvdl Exp $	*/

/*
 * Copyright (c) 1989, 1993
 *	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.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)nfsmount.h	8.3 (Berkeley) 3/30/95
 */


#ifndef _NFS_NFSMOUNT_H_
#define _NFS_NFSMOUNT_H_

/*
 * Mount structure.
 * One allocated on every NFS mount.
 * Holds NFS specific information for mount.
 */
struct	nfsmount {
	int	nm_flag;		/* Flags for soft/hard... */
	struct	mount *nm_mountp;	/* Vfs structure for this filesystem */
	int	nm_numgrps;		/* Max. size of groupslist */
	u_char	nm_fh[NFSX_V3FHMAX];	/* File handle of root dir */
	int	nm_fhsize;		/* Size of root file handle */
	struct	socket *nm_so;		/* Rpc socket */
	int	nm_sotype;		/* Type of socket */
	int	nm_soproto;		/* and protocol */
	int	nm_soflags;		/* pr_flags for socket protocol */
	struct	mbuf *nm_nam;		/* Addr of server */
	int	nm_timeo;		/* Init timer for NFSMNT_DUMBTIMR */
	int	nm_retry;		/* Max retries */
	int	nm_srtt[4];		/* Timers for rpcs */
	int	nm_sdrtt[4];
	int	nm_sent;		/* Request send count */
	int	nm_cwnd;		/* Request send window */
	int	nm_timeouts;		/* Request timeouts */
	int	nm_deadthresh;		/* Threshold of timeouts-->dead server*/
	int	nm_rsize;		/* Max size of read rpc */
	int	nm_wsize;		/* Max size of write rpc */
	int	nm_readdirsize;		/* Size of a readdir rpc */
	int	nm_readahead;		/* Num. of blocks to readahead */
	int	nm_leaseterm;		/* Term (sec) for NQNFS lease */
	CIRCLEQ_HEAD(, nfsnode) nm_timerhead; /* Head of lease timer queue */
	struct vnode *nm_inprog;	/* Vnode in prog by nqnfs_clientd() */
	uid_t	nm_authuid;		/* Uid for authenticator */
	int	nm_authtype;		/* Authenticator type */
	int	nm_authlen;		/* and length */
	char	*nm_authstr;		/* Authenticator string */
	char	*nm_verfstr;		/* and the verifier */
	int	nm_verflen;
	u_char	nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
	NFSKERBKEY_T nm_key;		/* and the session key */
	int	nm_numuids;		/* Number of nfsuid mappings */
	TAILQ_HEAD(, nfsuid) nm_uidlruhead; /* Lists of nfsuid mappings */
	LIST_HEAD(, nfsuid) nm_uidhashtbl[NFS_MUIDHASHSIZ];
	TAILQ_HEAD(, buf) nm_bufq;      /* async io buffer queue */
	short	nm_bufqlen;		/* number of buffers in queue */
	short	nm_bufqwant;		/* process wants to add to the queue */
	int	nm_bufqiods;		/* number of iods processing queue */
	u_int64_t nm_maxfilesize;	/* maximum file size */
};

#ifdef _KERNEL
/*
 * Convert mount ptr to nfsmount ptr.
 */
#define VFSTONFS(mp)	((struct nfsmount *)((mp)->mnt_data))
#endif /* _KERNEL */

/*
 * Prototypes for NFS mount operations
 */
int	nfs_mount __P((struct mount *mp, const char *path, void *data,
		struct nameidata *ndp, struct proc *p));
int	mountnfs __P((struct nfs_args *argp, struct mount *mp,
		struct mbuf *nam, const char *pth, const char *hst,
		struct vnode **vpp));
int	nfs_mountroot __P((void));
void	nfs_decode_args __P((struct nfsmount *, struct nfs_args *));
int	nfs_start __P((struct mount *mp, int flags, struct proc *p));
int	nfs_unmount __P((struct mount *mp, int mntflags, struct proc *p));
int	nfs_root __P((struct mount *mp, struct vnode **vpp));
int	nfs_quotactl __P((struct mount *mp, int cmds, uid_t uid, caddr_t arg,
		struct proc *p));
int	nfs_statfs __P((struct mount *mp, struct statfs *sbp, struct proc *p));
int	nfs_sync __P((struct mount *mp, int waitfor, struct ucred *cred,
		struct proc *p));
int	nfs_vget __P((struct mount *, ino_t, struct vnode **));
int	nfs_fhtovp __P((struct mount *mp, struct fid *fhp, struct mbuf *nam,
		struct vnode **vpp, int *exflagsp, struct ucred **credanonp));
int	nfs_vptofh __P((struct vnode *vp, struct fid *fhp));
int	nfs_fsinfo __P((struct nfsmount *, struct vnode *, struct ucred *,
			struct proc *));
void	nfs_vfs_init __P((void));

/*
 * Prototypes for miscellaneous exported NFS functions.
 */
void	nfs_init __P((void));

#endif