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. 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 * @(#)nfsdiskless.h 8.2 (Berkeley) 3/30/95 37 * $FreeBSD: src/sys/nfs/nfsdiskless.h,v 1.11 1999/08/28 00:50:02 peter Exp $ 38 * $DragonFly: src/sys/vfs/nfs/nfsdiskless.h,v 1.3 2006/09/09 19:34:46 dillon Exp $ 39 */ 40 41 42 #ifndef _NFS_NFSDISKLESS_H_ 43 #define _NFS_NFSDISKLESS_H_ 44 45 /* 46 * Structure that must be initialized for a diskless nfs client. 47 * This structure is used by nfs_mountroot() to set up the root vnode, 48 * and to do a partial ifconfig(8) and route(8) so that the critical net 49 * interface can communicate with the server. 50 * The primary bootstrap is expected to fill in the appropriate fields before 51 * starting the kernel. Whether or not the swap area is nfs mounted is 52 * determined by the value in swdevt[0]. (equal to NOCDEV --> swap over nfs) 53 * Currently only works for AF_INET protocols. 54 * NB: All fields are stored in net byte order to avoid hassles with 55 * client/server byte ordering differences. 56 */ 57 58 /* 59 * I have defined a new structure that can handle an NFS Version 3 file handle 60 * but the kernel still expects the old Version 2 one to be provided. The 61 * changes required in nfs_vfsops.c for using the new are documented there in 62 * comments. (I felt that breaking network booting code by changing this 63 * structure would not be prudent at this time, since almost all servers are 64 * still Version 2 anyhow.) 65 */ 66 struct nfsv3_diskless { 67 struct ifaliasreq myif; /* Default interface */ 68 struct sockaddr_in mygateway; /* Default gateway */ 69 struct nfs_args swap_args; /* Mount args for swap file */ 70 int swap_fhsize; /* Size of file handle */ 71 u_char swap_fh[NFSX_V3FHMAX]; /* Swap file's file handle */ 72 struct sockaddr_in swap_saddr; /* Address of swap server */ 73 char swap_hostnam[MNAMELEN]; /* Host name for mount pt */ 74 int swap_nblks; /* Size of server swap file */ 75 struct ucred swap_ucred; /* Swap credentials */ 76 struct nfs_args root_args; /* Mount args for root fs */ 77 int root_fhsize; /* Size of root file handle */ 78 u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */ 79 struct sockaddr_in root_saddr; /* Address of root server */ 80 char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 81 long root_time; /* Timestamp of root fs */ 82 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 83 }; 84 85 /* 86 * Old arguments to mount NFS 87 */ 88 struct onfs_args { 89 struct sockaddr *addr; /* file server address */ 90 int addrlen; /* length of address */ 91 int sotype; /* Socket type */ 92 int proto; /* and Protocol */ 93 u_char *fh; /* File handle to be mounted */ 94 int fhsize; /* Size, in bytes, of fh */ 95 int flags; /* flags */ 96 int wsize; /* write size in bytes */ 97 int rsize; /* read size in bytes */ 98 int readdirsize; /* readdir size in bytes */ 99 int timeo; /* initial timeout in .1 secs */ 100 int retrans; /* times to retry send */ 101 int maxgrouplist; /* Max. size of group list */ 102 int readahead; /* # of blocks to readahead */ 103 int leaseterm; /* Term (sec) of lease */ 104 int deadthresh; /* Retrans threshold */ 105 char *hostname; /* server's name */ 106 }; 107 108 struct nfs_diskless { 109 struct ifaliasreq myif; /* Default interface */ 110 struct sockaddr_in mygateway; /* Default gateway */ 111 struct onfs_args swap_args; /* Mount args for swap file */ 112 u_char swap_fh[NFSX_V2FH]; /* Swap file's file handle */ 113 struct sockaddr_in swap_saddr; /* Address of swap server */ 114 char swap_hostnam[MNAMELEN]; /* Host name for mount pt */ 115 int swap_nblks; /* Size of server swap file */ 116 struct ucred swap_ucred; /* Swap credentials */ 117 struct onfs_args root_args; /* Mount args for root fs */ 118 u_char root_fh[NFSX_V2FH]; /* File handle of root dir */ 119 struct sockaddr_in root_saddr; /* Address of root server */ 120 char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 121 long root_time; /* Timestamp of root fs */ 122 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 123 }; 124 125 #endif 126