The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfsdiskless.h

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    1 /*      $OpenBSD: nfsdiskless.h,v 1.10 2013/09/20 23:51:44 fgsch Exp $  */
    2 /*      $NetBSD: nfsdiskless.h,v 1.9 1996/02/18 11:54:00 fvdl Exp $     */
    3 
    4 /*
    5  * Copyright (c) 1991, 1993
    6  *      The Regents of the University of California.  All rights reserved.
    7  *
    8  * This code is derived from software contributed to Berkeley by
    9  * Rick Macklem at The University of Guelph.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. Neither the name of the University nor the names of its contributors
   20  *    may be used to endorse or promote products derived from this software
   21  *    without specific prior written permission.
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   33  * SUCH DAMAGE.
   34  *
   35  *      @(#)nfsdiskless.h       8.2 (Berkeley) 3/30/95
   36  */
   37 
   38 #ifndef _NFS_DISKLESS_H_
   39 #define _NFS_DISKLESS_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 and swap
   44  * vnodes plus do a partial ifconfig(8) and route(8) so that the critical
   45  * net interface can communicate with the server.
   46  * Whether or not the swap area is nfs mounted is determined
   47  * by the value in swdevt[0]. (equal to NODEV --> swap over nfs)
   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 struct nfs_dlmount {
   53         struct nfs_args ndm_args;
   54         struct sockaddr_in ndm_saddr;           /* Address of file server */
   55         char            ndm_host[MNAMELEN];     /* Host name for mount pt */
   56         u_char          ndm_fh[NFSX_V3FHMAX];   /* The file's file handle */
   57 };
   58 struct nfs_diskless {
   59         struct sockaddr_in nd_boot;     /* Address of boot server */
   60         struct nfs_dlmount nd_root;     /* Mount info for root */
   61         struct nfs_dlmount nd_swap;     /* Mount info for swap */
   62         struct vnode       *sw_vp;
   63 };
   64 
   65 int nfs_boot_init(struct nfs_diskless *nd, struct proc *procp);
   66 int nfs_boot_getfh(struct sockaddr_in *bpsin, char *key,
   67                 struct nfs_dlmount *ndmntp, int retries);
   68 #endif  /* _NFS_DISKLESS_H_ */
   69 

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