146986Smckusick /* 263236Sbostic * Copyright (c) 1991, 1993 363236Sbostic * The Regents of the University of California. All rights reserved. 446986Smckusick * 546986Smckusick * This code is derived from software contributed to Berkeley by 646986Smckusick * Rick Macklem at The University of Guelph. 746986Smckusick * 846986Smckusick * %sccs.include.redist.c% 946986Smckusick * 10*68653Smckusick * @(#)nfsdiskless.h 8.2 (Berkeley) 03/30/95 1146986Smckusick */ 1246986Smckusick 13*68653Smckusick 14*68653Smckusick #ifndef _NFS_NFSDISKLESS_H_ 15*68653Smckusick #define _NFS_NFSDISKLESS_H_ 16*68653Smckusick 1746986Smckusick /* 1846986Smckusick * Structure that must be initialized for a diskless nfs client. 1946986Smckusick * This structure is used by nfs_mountroot() to set up the root and swap 2046986Smckusick * vnodes plus do a partial ifconfig(8) and route(8) so that the critical net 2146986Smckusick * interface can communicate with the server. 2252196Smckusick * The primary bootstrap is expected to fill in the appropriate fields before 23*68653Smckusick * starting the kernel. Whether or not the swap area is nfs mounted is 24*68653Smckusick * determined by the value in swdevt[0]. (equal to NODEV --> swap over nfs) 2552196Smckusick * Currently only works for AF_INET protocols. 2652196Smckusick * NB: All fields are stored in net byte order to avoid hassles with 2752196Smckusick * client/server byte ordering differences. 2846986Smckusick */ 29*68653Smckusick 30*68653Smckusick /* 31*68653Smckusick * I have defined a new structure that can handle an NFS Version 3 file handle 32*68653Smckusick * but the kernel still expects the old Version 2 one to be provided. The 33*68653Smckusick * changes required in nfs_vfsops.c for using the new are documented there in 34*68653Smckusick * comments. (I felt that breaking network booting code by changing this 35*68653Smckusick * structure would not be prudent at this time, since almost all servers are 36*68653Smckusick * still Version 2 anyhow.) 37*68653Smckusick */ 38*68653Smckusick struct nfsv3_diskless { 39*68653Smckusick struct ifaliasreq myif; /* Default interface */ 40*68653Smckusick struct sockaddr_in mygateway; /* Default gateway */ 41*68653Smckusick struct nfs_args swap_args; /* Mount args for swap file */ 42*68653Smckusick int swap_fhsize; /* Size of file handle */ 43*68653Smckusick u_char swap_fh[NFSX_V3FHMAX]; /* Swap file's file handle */ 44*68653Smckusick struct sockaddr_in swap_saddr; /* Address of swap server */ 45*68653Smckusick char swap_hostnam[MNAMELEN]; /* Host name for mount pt */ 46*68653Smckusick int swap_nblks; /* Size of server swap file */ 47*68653Smckusick struct ucred swap_ucred; /* Swap credentials */ 48*68653Smckusick struct nfs_args root_args; /* Mount args for root fs */ 49*68653Smckusick int root_fhsize; /* Size of root file handle */ 50*68653Smckusick u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */ 51*68653Smckusick struct sockaddr_in root_saddr; /* Address of root server */ 52*68653Smckusick char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 53*68653Smckusick long root_time; /* Timestamp of root fs */ 54*68653Smckusick char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 55*68653Smckusick }; 56*68653Smckusick 5746986Smckusick struct nfs_diskless { 5852196Smckusick struct ifaliasreq myif; /* Default interface */ 5952196Smckusick struct sockaddr_in mygateway; /* Default gateway */ 6052196Smckusick struct nfs_args swap_args; /* Mount args for swap file */ 61*68653Smckusick u_char swap_fh[NFSX_V2FH]; /* Swap file's file handle */ 6252196Smckusick struct sockaddr_in swap_saddr; /* Address of swap server */ 6352196Smckusick char swap_hostnam[MNAMELEN]; /* Host name for mount pt */ 6452196Smckusick int swap_nblks; /* Size of server swap file */ 6555081Storek struct ucred swap_ucred; /* Swap credentials */ 6652196Smckusick struct nfs_args root_args; /* Mount args for root fs */ 67*68653Smckusick u_char root_fh[NFSX_V2FH]; /* File handle of root dir */ 6852196Smckusick struct sockaddr_in root_saddr; /* Address of root server */ 6952196Smckusick char root_hostnam[MNAMELEN]; /* Host name for mount pt */ 7057782Smckusick long root_time; /* Timestamp of root fs */ 7152444Smckusick char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */ 7246986Smckusick }; 73*68653Smckusick 74*68653Smckusick #endif 75