The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*
    2  * Copyright (c) 1989, 1993
    3  *      The Regents of the University of California.  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  8.3 (Berkeley) 3/30/95
   37  * $FreeBSD: releng/5.2/sys/nfsclient/nfsmount.h 122953 2003-11-22 02:21:49Z alfred $
   38  */
   39 
   40 #ifndef _NFSCLIENT_NFSMOUNT_H_
   41 #define _NFSCLIENT_NFSMOUNT_H_
   42 
   43 /*
   44  * Mount structure.
   45  * One allocated on every NFS mount.
   46  * Holds NFS specific information for mount.
   47  */
   48 struct  nfsmount {
   49         int     nm_flag;                /* Flags for soft/hard... */
   50         int     nm_state;               /* Internal state flags */
   51         struct  mount *nm_mountp;       /* Vfs structure for this filesystem */
   52         int     nm_numgrps;             /* Max. size of groupslist */
   53         u_char  nm_fh[NFSX_V4FH];       /* File handle of root dir */
   54         int     nm_fhsize;              /* Size of root file handle */
   55         struct  rpcclnt nm_rpcclnt;     /* rpc state */
   56         struct  socket *nm_so;          /* Rpc socket */
   57         int     nm_sotype;              /* Type of socket */
   58         int     nm_soproto;             /* and protocol */
   59         int     nm_soflags;             /* pr_flags for socket protocol */
   60         struct  sockaddr *nm_nam;       /* Addr of server */
   61         int     nm_timeo;               /* Init timer for NFSMNT_DUMBTIMR */
   62         int     nm_retry;               /* Max retries */
   63         int     nm_srtt[4];             /* Timers for rpcs */
   64         int     nm_sdrtt[4];
   65         int     nm_sent;                /* Request send count */
   66         int     nm_cwnd;                /* Request send window */
   67         int     nm_timeouts;            /* Request timeouts */
   68         int     nm_deadthresh;          /* Threshold of timeouts-->dead server*/
   69         int     nm_rsize;               /* Max size of read rpc */
   70         int     nm_wsize;               /* Max size of write rpc */
   71         int     nm_readdirsize;         /* Size of a readdir rpc */
   72         int     nm_readahead;           /* Num. of blocks to readahead */
   73         int     nm_acdirmin;            /* Directory attr cache min lifetime */
   74         int     nm_acdirmax;            /* Directory attr cache max lifetime */
   75         int     nm_acregmin;            /* Reg file attr cache min lifetime */
   76         int     nm_acregmax;            /* Reg file attr cache max lifetime */
   77         u_char  nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
   78         TAILQ_HEAD(, buf) nm_bufq;      /* async io buffer queue */
   79         short   nm_bufqlen;             /* number of buffers in queue */
   80         short   nm_bufqwant;            /* process wants to add to the queue */
   81         int     nm_bufqiods;            /* number of iods processing queue */
   82         u_int64_t nm_maxfilesize;       /* maximum file size */
   83         struct nfs_rpcops *nm_rpcops;
   84 
   85         /* NFSv4 */
   86         uint64_t nm_clientid;
   87         fsid_t  nm_fsid;
   88         u_int   nm_lease_time;
   89         time_t  nm_last_renewal;
   90 };
   91 
   92 #if defined(_KERNEL)
   93 /*
   94  * Convert mount ptr to nfsmount ptr.
   95  */
   96 #define VFSTONFS(mp)    ((struct nfsmount *)((mp)->mnt_data))
   97 
   98 #endif
   99 
  100 #endif

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