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  * 4. Neither the name of the University nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  *      @(#)nfsmount.h  8.3 (Berkeley) 3/30/95
   33  * $FreeBSD$
   34  */
   35 
   36 #ifndef _NFSCLIENT_NFSMOUNT_H_
   37 #define _NFSCLIENT_NFSMOUNT_H_
   38 
   39 struct nfs_tcp_mountstate {
   40         int rpcresid;
   41 #define NFS_TCP_EXPECT_RPCMARKER        0x0001 /* Expect to see a RPC/TCP marker next */
   42 #define NFS_TCP_FORCE_RECONNECT         0x0002 /* Force a TCP reconnect */
   43 #define NFS_TCP_WAIT_WRITE_DRAIN        0x0004 /* Waiting for socket writers to finish */
   44         int flags;
   45         int sock_send_inprog;
   46 };
   47 
   48 /*
   49  * Mount structure.
   50  * One allocated on every NFS mount.
   51  * Holds NFS specific information for mount.
   52  */
   53 struct  nfsmount {
   54         struct mtx      nm_mtx;
   55         int     nm_flag;                /* Flags for soft/hard... */
   56         int     nm_state;               /* Internal state flags */
   57         struct  mount *nm_mountp;       /* Vfs structure for this filesystem */
   58         int     nm_numgrps;             /* Max. size of groupslist */
   59         u_char  nm_fh[NFSX_V4FH];       /* File handle of root dir */
   60         int     nm_fhsize;              /* Size of root file handle */
   61         struct  rpcclnt nm_rpcclnt;     /* rpc state */
   62         struct  socket *nm_so;          /* Rpc socket */
   63         int     nm_sotype;              /* Type of socket */
   64         int     nm_soproto;             /* and protocol */
   65         int     nm_soflags;             /* pr_flags for socket protocol */
   66         struct  sockaddr *nm_nam;       /* Addr of server */
   67         int     nm_timeo;               /* Init timer for NFSMNT_DUMBTIMR */
   68         int     nm_retry;               /* Max retries */
   69         int     nm_srtt[NFS_MAX_TIMER], /* RTT Timers for rpcs */
   70                 nm_sdrtt[NFS_MAX_TIMER];
   71         int     nm_sent;                /* Request send count */
   72         int     nm_cwnd;                /* Request send window */
   73         int     nm_timeouts;            /* Request timeouts */
   74         int     nm_deadthresh;          /* Threshold of timeouts-->dead server*/
   75         int     nm_rsize;               /* Max size of read rpc */
   76         int     nm_wsize;               /* Max size of write rpc */
   77         int     nm_readdirsize;         /* Size of a readdir rpc */
   78         int     nm_readahead;           /* Num. of blocks to readahead */
   79         int     nm_wcommitsize;         /* Max size of commit for write */
   80         int     nm_acdirmin;            /* Directory attr cache min lifetime */
   81         int     nm_acdirmax;            /* Directory attr cache max lifetime */
   82         int     nm_acregmin;            /* Reg file attr cache min lifetime */
   83         int     nm_acregmax;            /* Reg file attr cache max lifetime */
   84         u_char  nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
   85         TAILQ_HEAD(, buf) nm_bufq;      /* async io buffer queue */
   86         short   nm_bufqlen;             /* number of buffers in queue */
   87         short   nm_bufqwant;            /* process wants to add to the queue */
   88         int     nm_bufqiods;            /* number of iods processing queue */
   89         u_int64_t nm_maxfilesize;       /* maximum file size */
   90         struct nfs_rpcops *nm_rpcops;
   91         int     nm_tprintf_initial_delay;       /* initial delay */
   92         int     nm_tprintf_delay;               /* interval for messages */
   93         struct nfs_tcp_mountstate nm_nfstcpstate;
   94         char    nm_hostname[MNAMELEN];   /* server's name */
   95 
   96         /* NFSv4 */
   97         uint64_t nm_clientid;
   98         fsid_t  nm_fsid;
   99         u_int   nm_lease_time;
  100         time_t  nm_last_renewal;
  101 };
  102 
  103 #if defined(_KERNEL)
  104 /*
  105  * Convert mount ptr to nfsmount ptr.
  106  */
  107 #define VFSTONFS(mp)    ((struct nfsmount *)((mp)->mnt_data))
  108 
  109 #ifndef NFS_TPRINTF_INITIAL_DELAY
  110 #define NFS_TPRINTF_INITIAL_DELAY       12
  111 #endif
  112 
  113 #ifndef NFS_TPRINTF_DELAY
  114 #define NFS_TPRINTF_DELAY               30
  115 #endif
  116 
  117 #endif
  118 
  119 #endif

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