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+/*
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)nfsdiskless.h 8.1 (Berkeley) 6/10/93
+ * $Id$
+ */
+
+#ifndef _NFS_NFSDISKLESS_H_
+#define _NFS_NFSDISKLESS_H_
+
+/*
+ * Structure that must be initialized for a diskless nfs client.
+ * This structure is used by nfs_mountroot() to set up the root and swap
+ * vnodes plus do a partial ifconfig(8) and route(8) so that the critical net
+ * interface can communicate with the server.
+ * The primary bootstrap is expected to fill in the appropriate fields before
+ * starting the kernel. Whether or not the swap area is nfs mounted is determined
+ * by the value in swdevt[0]. (equal to NODEV --> swap over nfs)
+ * Currently only works for AF_INET protocols.
+ * NB: All fields are stored in net byte order to avoid hassles with
+ * client/server byte ordering differences.
+ */
+
+/*
+ * I have defined a new structure that can handle an NFS Version 3 file handle
+ * but the kernel still expects the old Version 2 one to be provided. The
+ * changes required in nfs_vfsops.c for using the new are documented there in
+ * comments. (I felt that breaking network booting code by changing this
+ * structure would not be prudent at this time, since almost all servers are
+ * still Version 2 anyhow.)
+ */
+struct nfsv3_diskless {
+ struct ifaliasreq myif; /* Default interface */
+ struct sockaddr_in mygateway; /* Default gateway */
+ struct nfs_args swap_args; /* Mount args for swap file */
+ int swap_fhsize; /* Size of file handle */
+ u_char swap_fh[NFSX_V3FHMAX]; /* Swap file's file handle */
+ struct sockaddr_in swap_saddr; /* Address of swap server */
+ char swap_hostnam[MNAMELEN]; /* Host name for mount pt */
+ int swap_nblks; /* Size of server swap file */
+ struct ucred swap_ucred; /* Swap credentials */
+ struct nfs_args root_args; /* Mount args for root fs */
+ int root_fhsize; /* Size of root file handle */
+ u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */
+ struct sockaddr_in root_saddr; /* Address of root server */
+ char root_hostnam[MNAMELEN]; /* Host name for mount pt */
+ long root_time; /* Timestamp of root fs */
+ char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
+};
+
+struct nfs_diskless {
+ struct ifaliasreq myif; /* Default interface */
+ struct sockaddr_in mygateway; /* Default gateway */
+ struct nfs_args swap_args; /* Mount args for swap file */
+ u_char swap_fh[NFSX_V2FH]; /* Swap file's file handle */
+ struct sockaddr_in swap_saddr; /* Address of swap server */
+ char swap_hostnam[MNAMELEN]; /* Host name for mount pt */
+ int swap_nblks; /* Size of server swap file */
+ struct ucred swap_ucred; /* Swap credentials */
+ struct nfs_args root_args; /* Mount args for root fs */
+ u_char root_fh[NFSX_V2FH]; /* File handle of root dir */
+ struct sockaddr_in root_saddr; /* Address of root server */
+ char root_hostnam[MNAMELEN]; /* Host name for mount pt */
+ long root_time; /* Timestamp of root fs */
+ char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
+};
+
+#endif