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 #include <sys/mutex.h>
  46
  47 enum nfssvc_state {
  48         NFSSVC_INIT,
  49         NFSSVC_WAITING,
  50         NFSSVC_PENDING,
  51         NFSSVC_STOPPING,
  52         NFSSVC_DONE
  53 };
  54
  55 /*
  56  * Mount structure.
  57  * One allocated on every NFS mount.
  58  * Holds NFS specific information for mount.
  59  */
  60 struct  nfsmount {
  61         int     nm_flag;                /* Flags for soft/hard... */
  62         int     nm_state;               /* Internal state flags */
  63         TAILQ_ENTRY(nfsmount) nm_entry; /* entry in nfsmountq */
  64         struct mtx    nm_rxlock;        /* receive socket lock */
  65         struct mtx    nm_txlock;        /* send socket lock */
  66         thread_t nm_rxthread;
  67         thread_t nm_txthread;
  68         enum nfssvc_state nm_rxstate;
  69         enum nfssvc_state nm_txstate;
  70         struct  mount *nm_mountp;       /* Vfs structure for this filesystem */
  71         int     nm_numgrps;             /* Max. size of groupslist */
  72         u_char  nm_fh[NFSX_V3FHMAX];    /* File handle of root dir */
  73         int     nm_fhsize;              /* Size of root file handle */
  74         struct  socket *nm_so;          /* Rpc socket */
  75         int     nm_sotype;              /* Type of socket */
  76         int     nm_soproto;             /* and protocol */
  77         int     nm_soflags;             /* pr_flags for socket protocol */
  78         struct  sockaddr *nm_nam;       /* Addr of server */
  79         int     nm_timeo;               /* Init timer for NFSMNT_DUMBTIMR */
  80         int     nm_retry;               /* Max retries */
  81         int     nm_srtt[6];             /* Timers for rpcs (see proct[]) */
  82         int     nm_sdrtt[6];
  83         int     nm_maxasync_scaled;     /* Used to control congestion */
  84         int     nm_timeouts;            /* Request timeouts */
  85         int     nm_deadthresh;          /* Threshold of timeouts-->dead server*/
  86         u_int32_t nm_lastreprocnum;     /* Last resent procnum for dup detect */
  87         int     nm_rsize;               /* Max size of read rpc */
  88         int     nm_wsize;               /* Max size of write rpc */
  89         int     nm_readdirsize;         /* Size of a readdir rpc */
  90         int     nm_readahead;           /* Num. of blocks to readahead */
  91         int     nm_unused01;            /* Term (sec) for NQNFS lease */
  92         int     nm_acdirmin;            /* Directory attr cache min lifetime */
  93         int     nm_acdirmax;            /* Directory attr cache max lifetime */
  94         int     nm_acregmin;            /* Reg file attr cache min lifetime */
  95         int     nm_acregmax;            /* Reg file attr cache max lifetime */
  96         uid_t   nm_authuid;             /* Uid for authenticator */
  97         int     nm_authtype;            /* Authenticator type */
  98         int     nm_authlen;             /* and length */
  99         char    *nm_authstr;            /* Authenticator string */
 100         char    *nm_verfstr;            /* and the verifier */
 101         int     nm_verflen;
 102         u_char  nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
 103         NFSKERBKEY_T nm_key;            /* and the session key */
 104         int     nm_numuids;             /* Number of nfsuid mappings */
 105         TAILQ_HEAD(, nfsuid) nm_uidlruhead; /* Lists of nfsuid mappings */
 106         LIST_HEAD(, nfsuid) nm_uidhashtbl[NFS_MUIDHASHSIZ];
 107         TAILQ_HEAD(, bio) nm_bioq;      /* async io buffer queue */
 108         TAILQ_HEAD(, nfsreq) nm_reqtxq; /* nfsreq queue - tx processing */
 109         TAILQ_HEAD(, nfsreq) nm_reqrxq; /* nfsreq queue - rx processing */
 110         TAILQ_HEAD(, nfsreq) nm_reqq;   /* nfsreq queue - pending */
 111         int     nm_bioqlen;             /* number of buffers in queue */
 112         int     nm_reqqlen;             /* number of nfsreqs in queue */
 113         u_int64_t nm_maxfilesize;       /* maximum file size */
 114         struct ucred *nm_cred;          /* 'root' credential */
 115 };
 116
 117
 118 #if defined(_KERNEL)
 119 /*
 120  * Convert mount ptr to nfsmount ptr.
 121  */
 122 #define VFSTONFS(mp)    ((struct nfsmount *)((mp)->mnt_data))
 123 extern void nfs_free_mount(struct nfsmount *nmp);
 124 extern void nfs_setvtype(struct vnode *, enum vtype);
 125
 126 #endif
 127
 128 #endif