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 */
 60struct 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 */
 75struct 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
 95struct 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
107extern struct nfsv3_diskless nfsv3_diskless;
108extern struct nfs_diskless nfs_diskless;
109extern int	nfs_diskless_valid;
110void bootpc_init(void);
111void nfs_setup_diskless(void);
112void nfs_parse_options(const char *, struct nfs_args *);
113#endif
114
115#endif