1 /* $NetBSD: nfs_bootstatic.c,v 1.8 2009/10/23 02:32:34 snj 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 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: nfs_bootstatic.c,v 1.8 2009/10/23 02:32:34 snj Exp $");
32
33 #ifdef _KERNEL_OPT
34 #include "opt_nfs_boot.h"
35 #endif
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/ioctl.h>
41 #include <sys/proc.h>
42 #include <sys/mount.h>
43 #include <sys/mbuf.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
46
47 #include <net/if.h>
48 #include <net/if_types.h>
49 #include <net/if_media.h>
50 #include <net/route.h>
51 #include <net/if_ether.h>
52
53 #include <netinet/in.h>
54 #include <netinet/if_inarp.h>
55
56 #include <nfs/rpcv2.h>
57
58 #include <nfs/nfsproto.h>
59 #include <nfs/nfs.h>
60 #include <nfs/nfsmount.h>
61 #include <nfs/nfsdiskless.h>
62
63 int (*nfs_bootstatic_callback)(struct nfs_diskless *) = NULL;
64
65 int
nfs_bootstatic(struct nfs_diskless * nd,struct lwp * lwp,int * _flags)66 nfs_bootstatic(struct nfs_diskless *nd, struct lwp *lwp, int *_flags)
67 {
68 struct ifnet *ifp = nd->nd_ifp;
69 struct sockaddr_in *sin;
70 int error, flags;
71
72 if (nfs_bootstatic_callback)
73 flags = (*nfs_bootstatic_callback)(nd);
74 else
75 flags = 0;
76
77 if (flags & NFS_BOOT_NOSTATIC)
78 return EOPNOTSUPP;
79
80 if (flags == 0) {
81 #ifdef NFS_BOOTSTATIC_MYIP
82 if (!(*_flags & NFS_BOOT_HAS_MYIP)) {
83 nd->nd_myip.s_addr = inet_addr(NFS_BOOTSTATIC_MYIP);
84 flags |= NFS_BOOT_HAS_MYIP;
85 }
86 #endif
87 #ifdef NFS_BOOTSTATIC_GWIP
88 if (!(*_flags & NFS_BOOT_HAS_GWIP)) {
89 nd->nd_gwip.s_addr = inet_addr(NFS_BOOTSTATIC_GWIP);
90 flags |= NFS_BOOT_HAS_GWIP;
91 }
92 #endif
93 #ifdef NFS_BOOTSTATIC_MASK
94 if (!(*_flags & NFS_BOOT_HAS_MASK)) {
95 nd->nd_mask.s_addr = inet_addr(NFS_BOOTSTATIC_MASK);
96 flags |= NFS_BOOT_HAS_MASK;
97 }
98 #endif
99 #ifdef NFS_BOOTSTATIC_SERVADDR
100 if (!(*_flags & NFS_BOOT_HAS_SERVADDR)) {
101 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
102 memset((void *)sin, 0, sizeof(*sin));
103 sin->sin_len = sizeof(*sin);
104 sin->sin_family = AF_INET;
105 sin->sin_addr.s_addr = inet_addr(NFS_BOOTSTATIC_SERVADDR);
106 flags |= NFS_BOOT_HAS_SERVADDR;
107 }
108 #endif
109 #ifdef NFS_BOOTSTATIC_SERVER
110 if (!(*_flags & NFS_BOOT_HAS_SERVER)) {
111 strncpy(nd->nd_root.ndm_host, NFS_BOOTSTATIC_SERVER,
112 MNAMELEN);
113 flags |= NFS_BOOT_HAS_SERVER;
114 if (strchr(nd->nd_root.ndm_host, ':') != NULL)
115 flags |= NFS_BOOT_HAS_ROOTPATH;
116 }
117 #endif
118 }
119
120 *_flags |= flags;
121
122 if (!(*_flags & NFS_BOOT_HAS_SERVADDR) && (*_flags & NFS_BOOT_HAS_SERVER)) {
123 char rootserver[MNAMELEN];
124 char *sep;
125
126 sep = strchr(nd->nd_root.ndm_host, ':');
127 strlcpy(rootserver, nd->nd_root.ndm_host,
128 sep - nd->nd_root.ndm_host+1);
129
130 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
131 memset((void *)sin, 0, sizeof(*sin));
132 sin->sin_len = sizeof(*sin);
133 sin->sin_family = AF_INET;
134 sin->sin_addr.s_addr = inet_addr(rootserver);
135 flags |= NFS_BOOT_HAS_SERVADDR;
136 *_flags |= NFS_BOOT_HAS_SERVADDR;
137 }
138
139 if (flags & NFS_BOOT_HAS_MYIP)
140 aprint_normal("nfs_boot: client_addr=%s\n",
141 inet_ntoa(nd->nd_myip));
142
143 if (flags & NFS_BOOT_HAS_GWIP)
144 aprint_normal("nfs_boot: gateway=%s\n",
145 inet_ntoa(nd->nd_gwip));
146
147 if (flags & NFS_BOOT_HAS_MASK)
148 aprint_normal("nfs_boot: netmask=%s\n",
149 inet_ntoa(nd->nd_mask));
150
151 if (flags & NFS_BOOT_HAS_SERVADDR) {
152 sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
153 aprint_normal("nfs_boot: server=%s\n",
154 inet_ntoa(sin->sin_addr));
155 }
156
157 if (flags & NFS_BOOT_HAS_SERVER)
158 aprint_normal("nfs_boot: root=%.*s\n", MNAMELEN,
159 nd->nd_root.ndm_host);
160
161 /*
162 * Do enough of ifconfig(8) so that the chosen interface
163 * can talk to the servers.
164 */
165 error = nfs_boot_setaddress(ifp, lwp,
166 *_flags & NFS_BOOT_HAS_MYIP ? nd->nd_myip.s_addr : INADDR_ANY,
167 *_flags & NFS_BOOT_HAS_MASK ? nd->nd_mask.s_addr : INADDR_ANY,
168 INADDR_ANY);
169 if (error) {
170 aprint_error("nfs_boot: set ifaddr, error=%d\n", error);
171 goto out;
172 }
173
174 if ((*_flags & NFS_BOOT_ALLINFO) != NFS_BOOT_ALLINFO)
175 return EADDRNOTAVAIL;
176
177 error = 0;
178
179 out:
180
181 return error;
182 }
183