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/****************************************************************************
* fs/nfs/nfs_mount.h
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Copyright (C) 2012 Jose Pablo Rojas Vargas. All rights reserved.
* Author: Jose Pablo Rojas Vargas <jrojas@nx-engineering.com>
*
* Leveraged from OpenBSD:
*
* 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.
* 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.
*
****************************************************************************/
#ifndef __FS_NFS_NFS_MOUNT_H
#define __FS_NFS_NFS_MOUNT_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define NFSOP(nmp, op) (*nmp->nm_nfsops->nn_##op)
#define NFSHASOP(nmp, op) (nmp->nm_nfsops->nn_##op != NULL)
#define NFSDAT(nmp, nam) (nmp->nm_nfsops->nn_##nam)
/* Convert mount ptr to nfsmount ptr. */
#define VFSTONFS(mp) ((struct nfsmount *)((mp)->i_private))
/****************************************************************************
* Public Types
****************************************************************************/
/* Mount structure.
* One allocated on every NFS mount.
* Holds NFS specific information for mount.
*/
struct nfsmount
{
int nm_flag; /* Flags for soft/hard... */
int nm_state; /* Internal state flags */
struct inode *nm_mountp; /* Vfs structure for this filesystem */
struct nfsnode *nfs_head; /* A list to all files opened on this mountpoint */
bool nfs_mounted; /* true: The file system is ready */
int nm_numgrps; /* Max. size of groupslist */
nfsfh_t nm_fh; /* File handle of root dir */
int nm_fhsize; /* Size of root file handle */
struct rpcclnt nm_rpcclnt; /* rpc state */
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 sockaddr *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_acdirmin; /* Directory attr cache min lifetime */
int nm_acdirmax; /* Directory attr cache max lifetime */
int nm_acregmin; /* Reg file attr cache min lifetime */
int nm_acregmax; /* Reg file attr cache max lifetime */
unsigned char nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* Prototypes for NFS mount operations: */
int nfs_mount(struct mount *, const char *, void *, struct nameidata *,
struct proc *);
int mountnfs(struct nfs_args *, struct mount *, struct mbuf *, char *, char *);
void nfs_decode_args(struct nfsmount *, struct nfs_args *, struct nfs_args *);
int nfs_start(struct mount *, int, struct proc *);
int nfs_unmount(struct mount *, int, struct proc *);
int nfs_root(struct mount *, struct vnode **);
int nfs_statfs(struct mount *, struct statfs *, struct proc *);
int nfs_sync(struct mount *, int, struct ucred *, struct proc *);
int nfs_vget(struct mount *, ino_t, struct vnode **);
int nfs_fhtovp(struct mount *, struct fid *, struct vnode **);
int nfs_vptofh(struct vnode *, struct fid *);
int nfs_fsinfo(struct nfsmount *, struct vnode *, struct ucred *,
struct proc *);
void nfs_init(void);
#endif
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