bsd/nfs/nfsdiskless.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1991, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Rick Macklem at The University of Guelph.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)nfsdiskless.h       8.2 (Berkeley) 3/30/95
  59  * FreeBSD-Id: nfsdiskless.h,v 1.10 1997/09/07 12:56:46 bde Exp $
  60  */
  61
  62
  63 #ifndef _NFS_NFSDISKLESS_H_
  64 #define _NFS_NFSDISKLESS_H_
  65
  66 /*
  67  * Structure that must be initialized for a diskless nfs client.
  68  * This structure is used by nfs_mountroot() to set up the root and swap
  69  * vnodes plus do a partial ifconfig(8) and route(8) so that the critical net
  70  * interface can communicate with the server.
  71  * The primary bootstrap is expected to fill in the appropriate fields before
  72  * starting the kernel. Whether or not the swap area is nfs mounted is
  73  * determined by the value in swdevt[0]. (equal to NODEV --> swap over nfs)
  74  * Currently only works for AF_INET protocols.
  75  * NB: All fields are stored in net byte order to avoid hassles with
  76  * client/server byte ordering differences.
  77  */
  78
  79 /*
  80  * I have defined a new structure that can handle an NFS Version 3 file handle
  81  * but the kernel still expects the old Version 2 one to be provided. The
  82  * changes required in nfs_vfsops.c for using the new are documented there in
  83  * comments. (I felt that breaking network booting code by changing this
  84  * structure would not be prudent at this time, since almost all servers are
  85  * still Version 2 anyhow.)
  86  */
  87 struct nfsv3_diskless {
  88         struct ifaliasreq myif;                 /* Default interface */
  89         struct sockaddr_in mygateway;           /* Default gateway */
  90         struct nfs_args swap_args;              /* Mount args for swap file */
  91         int             swap_fhsize;            /* Size of file handle */
  92         u_char          swap_fh[NFSX_V3FHMAX];  /* Swap file's file handle */
  93         struct sockaddr_in swap_saddr;          /* Address of swap server */
  94         char            swap_hostnam[MNAMELEN]; /* Host name for mount pt */
  95         int             swap_nblks;             /* Size of server swap file */
  96         struct ucred    swap_ucred;             /* Swap credentials */
  97         struct nfs_args root_args;              /* Mount args for root fs */
  98         int             root_fhsize;            /* Size of root file handle */
  99         u_char          root_fh[NFSX_V3FHMAX];  /* File handle of root dir */
 100         struct sockaddr_in root_saddr;          /* Address of root server */
 101         char            root_hostnam[MNAMELEN]; /* Host name for mount pt */
 102         long            root_time;              /* Timestamp of root fs */
 103         char            my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
 104 };
 105
 106 struct nfs_dlmount {
 107         struct sockaddr_in ndm_saddr;           /* Address of file server */
 108         char            ndm_host[MNAMELEN];     /* Host name for mount pt */
 109         u_char          ndm_fh[NFSX_V2FH];              /* The file's file handle */
 110 };
 111
 112 /*
 113  * Old arguments to mount NFS
 114  */
 115 struct onfs_args {
 116         struct sockaddr *addr;          /* file server address */
 117         int             addrlen;        /* length of address */
 118         int             sotype;         /* Socket type */
 119         int             proto;          /* and Protocol */
 120         u_char          *fh;            /* File handle to be mounted */
 121         int             fhsize;         /* Size, in bytes, of fh */
 122         int             flags;          /* flags */
 123         int             wsize;          /* write size in bytes */
 124         int             rsize;          /* read size in bytes */
 125         int             readdirsize;    /* readdir size in bytes */
 126         int             timeo;          /* initial timeout in .1 secs */
 127         int             retrans;        /* times to retry send */
 128         int             maxgrouplist;   /* Max. size of group list */
 129         int             readahead;      /* # of blocks to readahead */
 130         int             leaseterm;      /* Term (sec) of lease */
 131         int             deadthresh;     /* Retrans threshold */
 132         char            *hostname;      /* server's name */
 133 };
 134
 135 struct nfs_diskless {
 136         struct nfs_dlmount nd_root;     /* Mount info for root */
 137         struct nfs_dlmount nd_private;  /* Mount info for private */
 138 };
 139
 140 #endif