2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
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32 * @(#)nfsdiskless.h 8.2 (Berkeley) 3/30/95
33 * $FreeBSD: src/sys/nfs/nfsdiskless.h,v 1.11 1999/08/28 00:50:02 peter Exp $
34 * $DragonFly: src/sys/vfs/nfs/nfsdiskless.h,v 1.4 2007/05/08 02:31:43 dillon Exp $
38 #ifndef _NFS_NFSDISKLESS_H_
39 #define _NFS_NFSDISKLESS_H_
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. Whether or not the swap area is nfs mounted is
48 * determined by the value in swdevt[0]. (equal to NULL --> swap over nfs)
49 * Currently only works for AF_INET protocols.
50 * NB: All fields are stored in net byte order to avoid hassles with
51 * client/server byte ordering differences.
55 * I have defined a new structure that can handle an NFS Version 3 file handle
56 * but the kernel still expects the old Version 2 one to be provided. The
57 * changes required in nfs_vfsops.c for using the new are documented there in
58 * comments. (I felt that breaking network booting code by changing this
59 * structure would not be prudent at this time, since almost all servers are
60 * still Version 2 anyhow.)
62 struct nfsv3_diskless {
63 struct ifaliasreq myif; /* Default interface */
64 struct sockaddr_in mygateway; /* Default gateway */
65 struct nfs_args swap_args; /* Mount args for swap file */
66 int swap_fhsize; /* Size of file handle */
67 u_char swap_fh[NFSX_V3FHMAX]; /* Swap file's file handle */
68 struct sockaddr_in swap_saddr; /* Address of swap server */
69 char swap_hostnam[MNAMELEN]; /* Host name for mount pt */
70 int swap_nblks; /* Size of server swap file */
71 struct ucred swap_ucred; /* Swap credentials */
72 struct nfs_args root_args; /* Mount args for root fs */
73 int root_fhsize; /* Size of root file handle */
74 u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */
75 struct sockaddr_in root_saddr; /* Address of root server */
76 char root_hostnam[MNAMELEN]; /* Host name for mount pt */
77 long root_time; /* Timestamp of root fs */
78 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
82 * Old arguments to mount NFS
85 struct sockaddr *addr; /* file server address */
86 int addrlen; /* length of address */
87 int sotype; /* Socket type */
88 int proto; /* and Protocol */
89 u_char *fh; /* File handle to be mounted */
90 int fhsize; /* Size, in bytes, of fh */
91 int flags; /* flags */
92 int wsize; /* write size in bytes */
93 int rsize; /* read size in bytes */
94 int readdirsize; /* readdir size in bytes */
95 int timeo; /* initial timeout in .1 secs */
96 int retrans; /* times to retry send */
97 int maxgrouplist; /* Max. size of group list */
98 int readahead; /* # of blocks to readahead */
99 int leaseterm; /* Term (sec) of lease */
100 int deadthresh; /* Retrans threshold */
101 char *hostname; /* server's name */
104 struct nfs_diskless {
105 struct ifaliasreq myif; /* Default interface */
106 struct sockaddr_in mygateway; /* Default gateway */
107 struct onfs_args swap_args; /* Mount args for swap file */
108 u_char swap_fh[NFSX_V2FH]; /* Swap file's file handle */
109 struct sockaddr_in swap_saddr; /* Address of swap server */
110 char swap_hostnam[MNAMELEN]; /* Host name for mount pt */
111 int swap_nblks; /* Size of server swap file */
112 struct ucred swap_ucred; /* Swap credentials */
113 struct onfs_args root_args; /* Mount args for root fs */
114 u_char root_fh[NFSX_V2FH]; /* File handle of root dir */
115 struct sockaddr_in root_saddr; /* Address of root server */
116 char root_hostnam[MNAMELEN]; /* Host name for mount pt */
117 long root_time; /* Timestamp of root fs */
118 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */