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