1 /* 2 * Copyright (c) 1991, 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. 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 * @(#)nfsdiskless.h 8.2 (Berkeley) 3/30/95 33 * $FreeBSD: src/sys/nfs/nfsdiskless.h,v 1.11 1999/08/28 00:50:02 peter Exp $ 34 * $DragonFly: src/sys/vfs/nfs/nfsdiskless.h,v 1.4 2007/05/08 02:31:43 dillon Exp $ 35 */ 36 37 38 #ifndef _NFS_NFSDISKLESS_H_ 39 #define _NFS_NFSDISKLESS_H_ 40 41 /* 42 * Structure that must be initialized for a diskless nfs client. 43 * This structure is used by nfs_mountroot() to set up the root vnode, 44 * and to do a partial ifconfig(8) and route(8) so that the critical net 45 * interface can communicate with the server. 46 * The primary bootstrap is expected to fill in the appropriate fields before 47 * starting the kernel. Whether or not the swap area is nfs mounted is 48 * determined by the value in swdevt[0]. (equal to NULL --> swap over nfs) 49 * Currently only works for AF_INET protocols. 50 * NB: All fields are stored in net byte order to avoid hassles with 51 * client/server byte ordering differences. 52 */ 53 54 /* 55 * I have defined a new structure that can handle an NFS Version 3 file handle 56 * but the kernel still expects the old Version 2 one to be provided. The 57 * changes required in nfs_vfsops.c for using the new are documented there in 58 * comments. (I felt that breaking network booting code by changing this 59 * structure would not be prudent at this time, since almost all servers are 60 * still Version 2 anyhow.) 61 */ 62 struct nfsv3_diskless { 63 struct ifaliasreq myif; /* Default interface */ 64 struct sockaddr_in mygateway; /* Default gateway */ 65 struct nfs_args swap_args; /* Mount args for swap file */ 66 int swap_fhsize; /* Size of file handle */ 67 u_char swap_fh[NFSX_V3FHMAX]; /* Swap file's file handle */ 68 struct sockaddr_in swap_saddr; /* Address of swap server */ 69 char swap_hostnam[MNAMELEN]; /* Host name for mount pt */ 70 int swap_nblks; /* Size of server swap file */ 71 struct ucred swap_ucred; /* Swap credentials */ 72 struct nfs_args root_args; /* Mount args for root fs */ 73 int root_fhsize; /* Size of root file handle */ 74 u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */ 75 struct sockaddr_in root_saddr; /* Address of root server */ 76 char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 77 long root_time; /* Timestamp of root fs */ 78 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 79 }; 80 81 /* 82 * Old arguments to mount NFS 83 */ 84 struct onfs_args { 85 struct sockaddr *addr; /* file server address */ 86 int addrlen; /* length of address */ 87 int sotype; /* Socket type */ 88 int proto; /* and Protocol */ 89 u_char *fh; /* File handle to be mounted */ 90 int fhsize; /* Size, in bytes, of fh */ 91 int flags; /* flags */ 92 int wsize; /* write size in bytes */ 93 int rsize; /* read size in bytes */ 94 int readdirsize; /* readdir size in bytes */ 95 int timeo; /* initial timeout in .1 secs */ 96 int retrans; /* times to retry send */ 97 int maxgrouplist; /* Max. size of group list */ 98 int readahead; /* # of blocks to readahead */ 99 int leaseterm; /* Term (sec) of lease */ 100 int deadthresh; /* Retrans threshold */ 101 char *hostname; /* server's name */ 102 }; 103 104 struct nfs_diskless { 105 struct ifaliasreq myif; /* Default interface */ 106 struct sockaddr_in mygateway; /* Default gateway */ 107 struct onfs_args swap_args; /* Mount args for swap file */ 108 u_char swap_fh[NFSX_V2FH]; /* Swap file's file handle */ 109 struct sockaddr_in swap_saddr; /* Address of swap server */ 110 char swap_hostnam[MNAMELEN]; /* Host name for mount pt */ 111 int swap_nblks; /* Size of server swap file */ 112 struct ucred swap_ucred; /* Swap credentials */ 113 struct onfs_args root_args; /* Mount args for root fs */ 114 u_char root_fh[NFSX_V2FH]; /* File handle of root dir */ 115 struct sockaddr_in root_saddr; /* Address of root server */ 116 char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 117 long root_time; /* Timestamp of root fs */ 118 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 119 }; 120 121 #endif 122