FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfsmount.h

     /*      $NetBSD: nfsmount.h,v 1.33.6.1 2005/09/26 20:31:03 tron 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. 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_
    
    /*
     * Arguments to mount NFS
     */
    #define NFS_ARGSVERSION 3               /* change when nfs_args changes */
    struct nfs_args {
            int             version;        /* args structure version number */
            struct sockaddr *addr;          /* file server address */
            int             addrlen;        /* length of address */
            int             sotype;         /* Socket type */
            int             proto;          /* and Protocol */
            u_char          *fh;            /* File handle to be mounted */
            int             fhsize;         /* Size, in bytes, of fh */
            int             flags;          /* flags */
            int             wsize;          /* write size in bytes */
            int             rsize;          /* read size in bytes */
            int             readdirsize;    /* readdir size in bytes */
            int             timeo;          /* initial timeout in .1 secs */
            int             retrans;        /* times to retry send */
            int             maxgrouplist;   /* Max. size of group list */
            int             readahead;      /* # of blocks to readahead */
            int             leaseterm;      /* Term (sec) of lease */
            int             deadthresh;     /* Retrans threshold */
            char            *hostname;      /* server's name */
    };
    
    /*
     * NFS mount option flags (nm_flag)
     */
    #define NFSMNT_SOFT             0x00000001  /* soft mount (hard is default) */
    #define NFSMNT_WSIZE            0x00000002  /* set write size */
    #define NFSMNT_RSIZE            0x00000004  /* set read size */
    #define NFSMNT_TIMEO            0x00000008  /* set initial timeout */
    #define NFSMNT_RETRANS          0x00000010  /* set number of request retries */
    #define NFSMNT_MAXGRPS          0x00000020  /* set maximum grouplist size */
    #define NFSMNT_INT              0x00000040  /* allow interrupts on hard mount */
    #define NFSMNT_NOCONN           0x00000080  /* Don't Connect the socket */
    #define NFSMNT_NQNFS            0x00000100  /* Use Nqnfs protocol */
    #define NFSMNT_NFSV3            0x00000200  /* Use NFS Version 3 protocol */
    #define NFSMNT_KERB             0x00000400  /* Use Kerberos authentication */
    #define NFSMNT_DUMBTIMR         0x00000800  /* Don't estimate rtt dynamically */
    #define NFSMNT_LEASETERM        0x00001000  /* set lease term (nqnfs) */
    #define NFSMNT_READAHEAD        0x00002000  /* set read ahead */
    #define NFSMNT_DEADTHRESH       0x00004000  /* set dead server retry thresh */
    #define NFSMNT_RESVPORT         0x00008000  /* Allocate a reserved port */
    #define NFSMNT_RDIRPLUS         0x00010000  /* Use Readdirplus for V3 */
    #define NFSMNT_READDIRSIZE      0x00020000  /* Set readdir size */
    #define NFSMNT_XLATECOOKIE      0x00040000  /* 32<->64 dir cookie xlation */
    #define NFSMNT_NOAC             0x00080000  /* Turn off attribute cache */
    
    #define NFSMNT_BITS     "\177\2" \
        "b\00soft\0b\01wsize\0b\02rsize\0b\03timeo\0" \
        "b\04retrans\0b\05maxgrps\0b\06intr\0b\07noconn\0" \
        "b\10nqnfs\0b\11nfsv3\0b\12kerb\0b\13dumbtimr\0" \
        "b\14leaseterm\0b\15readahead\0b\16deadthresh\0b\17resvport\0" \
        "b\20rdirplus\0b\21readdirsize\0b\22xlatecookie\0b\23noac\0"
    
    /*
     * NFS internal flags (nm_iflag) */
    
   #define NFSMNT_HASWRITEVERF     0x00000001  /* Has write verifier for V3 */
   #define NFSMNT_GOTPATHCONF      0x00000002  /* Got the V3 pathconf info */
   #define NFSMNT_GOTFSINFO        0x00000004  /* Got the V3 fsinfo */
   #define NFSMNT_MNTD             0x00000008  /* Mnt server for mnt point */
   #define NFSMNT_DISMINPROG       0x00000010  /* Dismount in progress */
   #define NFSMNT_DISMNT           0x00000020  /* Dismounted */
   #define NFSMNT_SNDLOCK          0x00000040  /* Send socket lock */
   #define NFSMNT_WANTSND          0x00000080  /* Want above */
   #define NFSMNT_RCVLOCK          0x00000100  /* Rcv socket lock */
   #define NFSMNT_WANTRCV          0x00000200  /* Want above */
   #define NFSMNT_WAITAUTH         0x00000400  /* Wait for authentication */
   #define NFSMNT_HASAUTH          0x00000800  /* Has authenticator */
   #define NFSMNT_WANTAUTH         0x00001000  /* Wants an authenticator */
   #define NFSMNT_AUTHERR          0x00002000  /* Authentication error */
   #define NFSMNT_SWAPCOOKIE       0x00004000  /* XDR encode dir cookies */
   #define NFSMNT_STALEWRITEVERF   0x00008000  /* Write verifier is changing */
   #define NFSMNT_WCCKLUDGE        0x00010000  /* see nfs_check_wccdata() */
   
   #ifdef _KERNEL
   /*
    * Mount structure.
    * One allocated on every NFS mount.
    * Holds NFS specific information for mount.
    */
   struct  nfsmount {
           struct simplelock nm_slock;     /* Lock for this structure */
           int     nm_flag;                /* Flags for soft/hard... */
           struct  mount *nm_mountp;       /* Vfs structure for this filesystem */
           int     nm_numgrps;             /* Max. size of groupslist */
           struct vnode *nm_vnode;
           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;
           struct lock nm_writeverflock;   /* lock for below */
           u_char  nm_writeverf[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 */
           int     nm_iflag;               /* internal flags */
           int     nm_waiters;             /* number of waiting listeners.. */
           long    nm_wcckludgetime;       /* see nfs_check_wccdata() */
   };
   
   /*
    * Convert mount ptr to nfsmount ptr.
    */
   #define VFSTONFS(mp)    ((struct nfsmount *)((mp)->mnt_data))
   
   /*
    * 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, struct proc *p));
   int     nfs_mountroot __P((void));
   void    nfs_decode_args __P((struct nfsmount *, struct nfs_args *,
                   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, void *arg,
                   struct proc *p));
   int     nfs_statvfs __P((struct mount *mp, struct statvfs *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 vnode **vpp));
   int     nfs_checkexp __P((struct mount *mp, struct mbuf *nam, 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));
   void    nfs_vfs_reinit __P((void));
   void    nfs_vfs_done __P((void));
   
   /*
    * Prototypes for miscellaneous exported NFS functions.
    */
   void    nfs_init __P((void));
   
   #endif /* _KERNEL */
   
   #endif

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