usr/src/sys/nfs/nfsmount.h

/*
 * 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.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)nfsmount.h  8.1 (Berkeley) %G%
 */

/*
 * 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 */
        nfsv2fh_t nm_fh;                /* File handle of root dir */
        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_readahead;           /* Num. of blocks to readahead */
        int     nm_leaseterm;           /* Term (sec) for NQNFS lease */
        struct nfsnode *nm_tnext;       /* Head of lease timer queue */
        struct nfsnode *nm_tprev;
        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 */
};

#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,
                char *path,
                caddr_t data,
                struct nameidata *ndp,
                struct proc *p));
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_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_init __P(());