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      1 /*	$NetBSD: nfsdiskless.h,v 1.1.1.1 2013/09/30 07:19:34 dholland Exp $	*/
      2 /*-
      3  * Copyright (c) 1991, 1993
      4  *	The Regents of the University of California.  All rights reserved.
      5  *
      6  * This code is derived from software contributed to Berkeley by
      7  * Rick Macklem at The University of Guelph.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	@(#)nfsdiskless.h	8.2 (Berkeley) 3/30/95
     34  * FreeBSD: head/sys/nfs/nfsdiskless.h 221032 2011-04-25 22:22:51Z rmacklem
     35  * $NetBSD: nfsdiskless.h,v 1.1.1.1 2013/09/30 07:19:34 dholland Exp $
     36  */
     37 
     38 #ifndef _NFSCLIENT_NFSDISKLESS_H_
     39 #define _NFSCLIENT_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.
     48  * Currently only works for AF_INET protocols.
     49  * NB: All fields are stored in net byte order to avoid hassles with
     50  * client/server byte ordering differences.
     51  */
     52 
     53 /*
     54  * I have defined a new structure that can handle an NFS Version 3 file handle
     55  * but the kernel still expects the old Version 2 one to be provided. The
     56  * changes required in nfs_vfsops.c for using the new are documented there in
     57  * comments. (I felt that breaking network booting code by changing this
     58  * structure would not be prudent at this time, since almost all servers are
     59  * still Version 2 anyhow.)
     60  */
     61 struct nfsv3_diskless {
     62 	struct ifaliasreq myif;			/* Default interface */
     63 	struct sockaddr_in mygateway;		/* Default gateway */
     64 	struct nfs_args	root_args;		/* Mount args for root fs */
     65 	int		root_fhsize;		/* Size of root file handle */
     66 	u_char		root_fh[NFSX_V3FHMAX];	/* File handle of root dir */
     67 	struct sockaddr_in root_saddr;		/* Address of root server */
     68 	char		root_hostnam[MNAMELEN];	/* Host name for mount pt */
     69 	long		root_time;		/* Timestamp of root fs */
     70 	char		my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
     71 };
     72 
     73 /*
     74  * Old arguments to mount NFS
     75  */
     76 struct onfs_args {
     77 	struct sockaddr	*addr;		/* file server address */
     78 	int		addrlen;	/* length of address */
     79 	int		sotype;		/* Socket type */
     80 	int		proto;		/* and Protocol */
     81 	u_char		*fh;		/* File handle to be mounted */
     82 	int		fhsize;		/* Size, in bytes, of fh */
     83 	int		flags;		/* flags */
     84 	int		wsize;		/* write size in bytes */
     85 	int		rsize;		/* read size in bytes */
     86 	int		readdirsize;	/* readdir size in bytes */
     87 	int		timeo;		/* initial timeout in .1 secs */
     88 	int		retrans;	/* times to retry send */
     89 	int		maxgrouplist;	/* Max. size of group list */
     90 	int		readahead;	/* # of blocks to readahead */
     91 	int		leaseterm;	/* Term (sec) of lease */
     92 	int		deadthresh;	/* Retrans threshold */
     93 	char		*hostname;	/* server's name */
     94 };
     95 
     96 struct nfs_diskless {
     97 	struct ifaliasreq myif;			/* Default interface */
     98 	struct sockaddr_in mygateway;		/* Default gateway */
     99 	struct onfs_args root_args;		/* Mount args for root fs */
    100 	u_char		root_fh[NFSX_V2FH];	/* File handle of root dir */
    101 	struct sockaddr_in root_saddr;		/* Address of root server */
    102 	char		root_hostnam[MNAMELEN];	/* Host name for mount pt */
    103 	long		root_time;		/* Timestamp of root fs */
    104 	char		my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
    105 };
    106 
    107 #ifdef _KERNEL
    108 extern struct nfsv3_diskless nfsv3_diskless;
    109 extern struct nfs_diskless nfs_diskless;
    110 extern int	nfs_diskless_valid;
    111 void bootpc_init(void);
    112 void nfs_setup_diskless(void);
    113 void nfs_parse_options(const char *, struct nfs_args *);
    114 #endif
    115 
    116 #endif
    117