1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)nfsdiskless.h 8.2 (Berkeley) 3/30/95 35 */ 36 37 #ifndef _NFSCLIENT_NFSDISKLESS_H_ 38 #define _NFSCLIENT_NFSDISKLESS_H_ 39 40 /* 41 * Structure that must be initialized for a diskless nfs client. 42 * This structure is used by nfs_mountroot() to set up the root vnode, 43 * and to do a partial ifconfig(8) and route(8) so that the critical net 44 * interface can communicate with the server. 45 * The primary bootstrap is expected to fill in the appropriate fields before 46 * starting the kernel. 47 * Currently only works for AF_INET protocols. 48 * NB: All fields are stored in net byte order to avoid hassles with 49 * client/server byte ordering differences. 50 */ 51 52 /* 53 * I have defined a new structure that can handle an NFS Version 3 file handle 54 * but the kernel still expects the old Version 2 one to be provided. The 55 * changes required in nfs_vfsops.c for using the new are documented there in 56 * comments. (I felt that breaking network booting code by changing this 57 * structure would not be prudent at this time, since almost all servers are 58 * still Version 2 anyhow.) 59 */ 60 struct nfsv3_diskless { 61 struct ifaliasreq myif; /* Default interface */ 62 struct sockaddr_in mygateway; /* Default gateway */ 63 struct nfs_args root_args; /* Mount args for root fs */ 64 int root_fhsize; /* Size of root file handle */ 65 u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */ 66 struct sockaddr_in root_saddr; /* Address of root server */ 67 char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 68 long root_time; /* Timestamp of root fs */ 69 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 70 }; 71 72 /* 73 * Old arguments to mount NFS 74 */ 75 struct onfs_args { 76 struct sockaddr *addr; /* file server address */ 77 int addrlen; /* length of address */ 78 int sotype; /* Socket type */ 79 int proto; /* and Protocol */ 80 u_char *fh; /* File handle to be mounted */ 81 int fhsize; /* Size, in bytes, of fh */ 82 int flags; /* flags */ 83 int wsize; /* write size in bytes */ 84 int rsize; /* read size in bytes */ 85 int readdirsize; /* readdir size in bytes */ 86 int timeo; /* initial timeout in .1 secs */ 87 int retrans; /* times to retry send */ 88 int maxgrouplist; /* Max. size of group list */ 89 int readahead; /* # of blocks to readahead */ 90 int leaseterm; /* Term (sec) of lease */ 91 int deadthresh; /* Retrans threshold */ 92 char *hostname; /* server's name */ 93 }; 94 95 struct nfs_diskless { 96 struct ifaliasreq myif; /* Default interface */ 97 struct sockaddr_in mygateway; /* Default gateway */ 98 struct onfs_args root_args; /* Mount args for root fs */ 99 u_char root_fh[NFSX_V2FH]; /* 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 #ifdef _KERNEL 107 extern struct nfsv3_diskless nfsv3_diskless; 108 extern struct nfs_diskless nfs_diskless; 109 extern int nfs_diskless_valid; 110 void bootpc_init(void); 111 void nfs_setup_diskless(void); 112 void nfs_parse_options(const char *, struct nfs_args *); 113 #endif 114 115 #endif 116