sys/vfs/nfs/nfsmount.h

   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: src/sys/nfs/nfsmount.h,v 1.17 1999/12/29 04:54:54 peter Exp $
  38  * $DragonFly: src/sys/vfs/nfs/nfsmount.h,v 1.8 2006/04/07 06:38:33 dillon Exp $
  39  */
  40
  41
  42 #ifndef _NFS_NFSMOUNT_H_
  43 #define _NFS_NFSMOUNT_H_
  44
  45 /*
  46  * Mount structure.
  47  * One allocated on every NFS mount.
  48  * Holds NFS specific information for mount.
  49  */
  50 struct  nfsmount {
  51         int     nm_flag;                /* Flags for soft/hard... */
  52         int     nm_state;               /* Internal state flags */
  53         struct  mount *nm_mountp;       /* Vfs structure for this filesystem */
  54         int     nm_numgrps;             /* Max. size of groupslist */
  55         u_char  nm_fh[NFSX_V3FHMAX];    /* File handle of root dir */
  56         int     nm_fhsize;              /* Size of root file handle */
  57         struct  socket *nm_so;          /* Rpc socket */
  58         int     nm_sotype;              /* Type of socket */
  59         int     nm_soproto;             /* and protocol */
  60         int     nm_soflags;             /* pr_flags for socket protocol */
  61         struct  sockaddr *nm_nam;       /* Addr of server */
  62         int     nm_timeo;               /* Init timer for NFSMNT_DUMBTIMR */
  63         int     nm_retry;               /* Max retries */
  64         int     nm_srtt[4];             /* Timers for rpcs */
  65         int     nm_sdrtt[4];
  66         int     nm_sent;                /* Request send count */
  67         int     nm_cwnd;                /* Request send window */
  68         int     nm_timeouts;            /* Request timeouts */
  69         int     nm_deadthresh;          /* Threshold of timeouts-->dead server*/
  70         int     nm_rsize;               /* Max size of read rpc */
  71         int     nm_wsize;               /* Max size of write rpc */
  72         int     nm_readdirsize;         /* Size of a readdir rpc */
  73         int     nm_readahead;           /* Num. of blocks to readahead */
  74         int     nm_unused01;            /* Term (sec) for NQNFS lease */
  75         int     nm_acdirmin;            /* Directory attr cache min lifetime */
  76         int     nm_acdirmax;            /* Directory attr cache max lifetime */
  77         int     nm_acregmin;            /* Reg file attr cache min lifetime */
  78         int     nm_acregmax;            /* Reg file attr cache max lifetime */
  79         uid_t   nm_authuid;             /* Uid for authenticator */
  80         int     nm_authtype;            /* Authenticator type */
  81         int     nm_authlen;             /* and length */
  82         char    *nm_authstr;            /* Authenticator string */
  83         char    *nm_verfstr;            /* and the verifier */
  84         int     nm_verflen;
  85         u_char  nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
  86         NFSKERBKEY_T nm_key;            /* and the session key */
  87         int     nm_numuids;             /* Number of nfsuid mappings */
  88         TAILQ_HEAD(, nfsuid) nm_uidlruhead; /* Lists of nfsuid mappings */
  89         LIST_HEAD(, nfsuid) nm_uidhashtbl[NFS_MUIDHASHSIZ];
  90         TAILQ_HEAD(, bio) nm_bioq;      /* async io buffer queue */
  91         short   nm_bioqlen;             /* number of buffers in queue */
  92         short   nm_bioqwant;            /* process wants to add to the queue */
  93         int     nm_bioqiods;            /* number of iods processing queue */
  94         u_int64_t nm_maxfilesize;       /* maximum file size */
  95         struct ucred *nm_cred;          /* 'root' credential */
  96         struct thread *nm_rcvlock_td;   /* debugging */
  97 };
  98
  99
 100 #if defined(_KERNEL)
 101 /*
 102  * Convert mount ptr to nfsmount ptr.
 103  */
 104 #define VFSTONFS(mp)    ((struct nfsmount *)((mp)->mnt_data))
 105 extern void nfs_free_mount(struct nfsmount *nmp);
 106 extern void nfs_setvtype(struct vnode *, enum vtype);
 107
 108 #endif
 109
 110 #endif