Home | History | Annotate | Line # | Download | only in nfs
nfsmount.h revision 1.1 
      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  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	@(#)nfsmount.h	7.7 (Berkeley) 4/16/91
     37  */
     38 
     39 #ifndef _NFS_NFSMOUNT_H_
     40 #define _NFS_NFSMOUNT_H_
     41 
     42 /*
     43  * Mount structure.
     44  * One allocated on every NFS mount.
     45  * Holds NFS specific information for mount.
     46  */
     47 struct	nfsmount {
     48 	int	nm_flag;		/* Flags for soft/hard... */
     49 	struct	mount *nm_mountp;	/* Vfs structure for this filesystem */
     50 	nfsv2fh_t nm_fh;		/* File handle of root dir */
     51 	struct	socket *nm_so;		/* Rpc socket */
     52 	int	nm_sotype;		/* Type of socket */
     53 	int	nm_soproto;		/* and protocol */
     54 	int	nm_soflags;		/* pr_flags for socket protocol */
     55 	struct	mbuf *nm_nam;		/* Addr of server */
     56 	short	nm_retry;		/* Max retry count */
     57 	short	nm_rexmit;		/* Rexmit on previous request */
     58 	short	nm_rtt;			/* Round trip timer ticks @ NFS_HZ */
     59 	short	nm_rto;			/* Current timeout */
     60 	short	nm_srtt;		/* Smoothed round trip time */
     61 	short	nm_rttvar;		/* RTT variance */
     62 	short	nm_currto;		/* Current rto of any nfsmount */
     63 	short	nm_currexmit;		/* Max rexmit count of nfsmounts */
     64 	short	nm_sent;		/* Request send count */
     65 	short	nm_window;		/* Request send window (max) */
     66 	short	nm_winext;		/* Window incremental value */
     67 	short	nm_ssthresh;		/* Slowstart threshold */
     68 	short	nm_salen;		/* Actual length of nm_sockaddr */
     69 	int	nm_rsize;		/* Max size of read rpc */
     70 	int	nm_wsize;		/* Max size of write rpc */
     71 };
     72 
     73 #ifdef KERNEL
     74 /*
     75  * Convert mount ptr to nfsmount ptr.
     76  */
     77 #define VFSTONFS(mp)	((struct nfsmount *)((mp)->mnt_data))
     78 #endif /* KERNEL */
     79 
     80 /*
     81  * Prototypes for NFS mount operations
     82  */
     83 int	nfs_mount __P((
     84 		struct mount *mp,
     85 		char *path,
     86 		caddr_t data,
     87 		struct nameidata *ndp,
     88 		struct proc *p));
     89 int	nfs_start __P((
     90 		struct mount *mp,
     91 		int flags,
     92 		struct proc *p));
     93 int	nfs_unmount __P((
     94 		struct mount *mp,
     95 		int mntflags,
     96 		struct proc *p));
     97 int	nfs_root __P((
     98 		struct mount *mp,
     99 		struct vnode **vpp));
    100 int	nfs_quotactl __P((
    101 		struct mount *mp,
    102 		int cmds,
    103 		int uid,	/* should be uid_t */
    104 		caddr_t arg,
    105 		struct proc *p));
    106 int	nfs_statfs __P((
    107 		struct mount *mp,
    108 		struct statfs *sbp,
    109 		struct proc *p));
    110 int	nfs_sync __P((
    111 		struct mount *mp,
    112 		int waitfor));
    113 int	nfs_fhtovp __P((
    114 		struct mount *mp,
    115 		struct fid *fhp,
    116 		struct vnode **vpp));
    117 int	nfs_vptofh __P((
    118 		struct vnode *vp,
    119 		struct fid *fhp));
    120 int	nfs_init __P(());
    121 
    122 #endif /* !_NFS_NFSMOUNT_H_ */
    123