sys/nfs/nfs_bootstatic.c

   1 /*      $NetBSD: nfs_bootstatic.c,v 1.4 2007/03/04 06:03:36 christos Exp $      */
   2
   3 /*
   4  *
   5  * Copyright (c) 2004 Christian Limpach.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Christian Limpach.
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34
  35 #include <sys/cdefs.h>
  36 __KERNEL_RCSID(0, "$NetBSD: nfs_bootstatic.c,v 1.4 2007/03/04 06:03:36 christos Exp $");
  37
  38 #include "opt_nfs_boot.h"
  39 #include "opt_inet.h"
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/ioctl.h>
  45 #include <sys/proc.h>
  46 #include <sys/mount.h>
  47 #include <sys/mbuf.h>
  48 #include <sys/socket.h>
  49 #include <sys/socketvar.h>
  50
  51 #include <net/if.h>
  52 #include <net/if_types.h>
  53 #include <net/if_media.h>
  54 #include <net/route.h>
  55 #include <net/if_ether.h>
  56
  57 #include <netinet/in.h>
  58 #include <netinet/if_inarp.h>
  59
  60 #include <nfs/rpcv2.h>
  61
  62 #include <nfs/nfsproto.h>
  63 #include <nfs/nfs.h>
  64 #include <nfs/nfsmount.h>
  65 #include <nfs/nfsdiskless.h>
  66
  67 int (*nfs_bootstatic_callback)(struct nfs_diskless *) = NULL;
  68
  69 int
  70 nfs_bootstatic(struct nfs_diskless *nd, struct lwp *lwp)
  71 {
  72         struct ifnet *ifp = nd->nd_ifp;
  73         struct sockaddr_in *sin;
  74         int error, flags;
  75
  76         if (nfs_bootstatic_callback)
  77                 flags = (*nfs_bootstatic_callback)(nd);
  78         else
  79                 flags = 0;
  80
  81         if (flags & NFS_BOOTSTATIC_NOSTATIC)
  82                 return EOPNOTSUPP;
  83
  84         if (flags == 0) {
  85 #ifdef NFS_BOOTSTATIC_MYIP
  86                 nd->nd_myip.s_addr = inet_addr(NFS_BOOTSTATIC_MYIP);
  87                 flags |= NFS_BOOTSTATIC_HAS_MYIP;
  88 #endif
  89 #ifdef NFS_BOOTSTATIC_GWIP
  90                 nd->nd_gwip.s_addr = inet_addr(NFS_BOOTSTATIC_GWIP);
  91                 flags |= NFS_BOOTSTATIC_HAS_GWIP;
  92 #endif
  93 #ifdef NFS_BOOTSTATIC_MASK
  94                 nd->nd_mask.s_addr = inet_addr(NFS_BOOTSTATIC_MASK);
  95                 flags |= NFS_BOOTSTATIC_HAS_MASK;
  96 #endif
  97 #ifdef NFS_BOOTSTATIC_SERVADDR
  98                 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
  99                 memset((void *)sin, 0, sizeof(*sin));
 100                 sin->sin_len = sizeof(*sin);
 101                 sin->sin_family = AF_INET;
 102                 sin->sin_addr.s_addr = inet_addr(NFS_BOOTSTATIC_SERVADDR);
 103                 flags |= NFS_BOOTSTATIC_HAS_SERVADDR;
 104 #endif
 105 #ifdef NFS_BOOTSTATIC_SERVER
 106                 strncpy(nd->nd_root.ndm_host, NFS_BOOTSTATIC_SERVER, MNAMELEN);
 107                 flags |= NFS_BOOTSTATIC_HAS_SERVER;
 108 #endif
 109         }
 110
 111         if (flags & NFS_BOOTSTATIC_HAS_MYIP)
 112                 aprint_normal("nfs_boot: client_addr=%s\n",
 113                     inet_ntoa(nd->nd_myip));
 114
 115         if (flags & NFS_BOOTSTATIC_HAS_GWIP)
 116                 aprint_normal("nfs_boot: gateway=%s\n",
 117                     inet_ntoa(nd->nd_gwip));
 118
 119         if (flags & NFS_BOOTSTATIC_HAS_MASK)
 120                 aprint_normal("nfs_boot: netmask=%s\n",
 121                     inet_ntoa(nd->nd_mask));
 122
 123         if (flags & NFS_BOOTSTATIC_HAS_SERVADDR) {
 124                 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
 125                 aprint_normal("nfs_boot: server=%s\n",
 126                     inet_ntoa(sin->sin_addr));
 127         }
 128
 129         if (flags & NFS_BOOTSTATIC_HAS_SERVER)
 130                 aprint_normal("nfs_boot: root=%.*s\n", MNAMELEN,
 131                     nd->nd_root.ndm_host);
 132
 133         /*
 134          * Do enough of ifconfig(8) so that the chosen interface
 135          * can talk to the servers.
 136          */
 137         error = nfs_boot_setaddress(ifp, lwp,
 138             flags & NFS_BOOTSTATIC_HAS_MYIP ? nd->nd_myip.s_addr : INADDR_ANY,
 139             flags & NFS_BOOTSTATIC_HAS_MASK ? nd->nd_mask.s_addr : INADDR_ANY,
 140             INADDR_ANY);
 141         if (error) {
 142                 aprint_error("nfs_boot: set ifaddr, error=%d\n", error);
 143                 goto out;
 144         }
 145
 146         error = 0;
 147
 148  out:
 149
 150         return error;
 151 }