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 * %sccs.include.redist.c% 9 * 10 * @(#)nfsdiskless.h 8.1 (Berkeley) 06/10/93 11 */ 12 13 /* 14 * Structure that must be initialized for a diskless nfs client. 15 * This structure is used by nfs_mountroot() to set up the root and swap 16 * vnodes plus do a partial ifconfig(8) and route(8) so that the critical net 17 * interface can communicate with the server. 18 * The primary bootstrap is expected to fill in the appropriate fields before 19 * starting vmunix. Whether or not the swap area is nfs mounted is determined 20 * by the value in swdevt[0]. (equal to NODEV --> swap over nfs) 21 * Currently only works for AF_INET protocols. 22 * NB: All fields are stored in net byte order to avoid hassles with 23 * client/server byte ordering differences. 24 */ 25 struct nfs_diskless { 26 struct ifaliasreq myif; /* Default interface */ 27 struct sockaddr_in mygateway; /* Default gateway */ 28 struct nfs_args swap_args; /* Mount args for swap file */ 29 u_char swap_fh[NFS_FHSIZE]; /* Swap file's file handle */ 30 struct sockaddr_in swap_saddr; /* Address of swap server */ 31 char swap_hostnam[MNAMELEN]; /* Host name for mount pt */ 32 int swap_nblks; /* Size of server swap file */ 33 struct ucred swap_ucred; /* Swap credentials */ 34 struct nfs_args root_args; /* Mount args for root fs */ 35 u_char root_fh[NFS_FHSIZE]; /* File handle of root dir */ 36 struct sockaddr_in root_saddr; /* Address of root server */ 37 char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 38 long root_time; /* Timestamp of root fs */ 39 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 40 }; 41