[39e6e65a] | 1 | /* $Id$ */ |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (c) 1995 Gordon Ross, Adam Glass |
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| 5 | * Copyright (c) 1992 Regents of the University of California. |
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| 6 | * All rights reserved. |
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| 7 | * |
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| 8 | * This software was developed by the Computer Systems Engineering group |
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| 9 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
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| 10 | * contributed to Berkeley. |
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| 11 | * |
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| 12 | * Redistribution and use in source and binary forms, with or without |
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| 13 | * modification, are permitted provided that the following conditions |
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| 14 | * are met: |
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| 15 | * 1. Redistributions of source code must retain the above copyright |
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| 16 | * notice, this list of conditions and the following disclaimer. |
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| 17 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 18 | * notice, this list of conditions and the following disclaimer in the |
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| 19 | * documentation and/or other materials provided with the distribution. |
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| 20 | * 3. All advertising materials mentioning features or use of this software |
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| 21 | * must display the following acknowledgement: |
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| 22 | * This product includes software developed by the University of |
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| 23 | * California, Lawrence Berkeley Laboratory and its contributors. |
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| 24 | * 4. Neither the name of the University nor the names of its contributors |
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| 25 | * may be used to endorse or promote products derived from this software |
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| 26 | * without specific prior written permission. |
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| 27 | * |
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| 28 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 38 | * SUCH DAMAGE. |
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| 39 | * |
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| 40 | * based on: |
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| 41 | * nfs/krpc_subr.c |
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| 42 | * $NetBSD: krpc_subr.c,v 1.10 1995/08/08 20:43:43 gwr Exp $ |
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| 43 | */ |
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| 44 | |
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| 45 | #include <sys/param.h> |
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| 46 | #include <sys/systm.h> |
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| 47 | #include <sys/kernel.h> |
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| 48 | #include <sys/conf.h> |
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| 49 | #include <sys/sockio.h> |
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| 50 | #include <sys/proc.h> |
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| 51 | #include <sys/mount.h> |
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| 52 | #include <sys/mbuf.h> |
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| 53 | #include <sys/reboot.h> |
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| 54 | #include <sys/socket.h> |
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| 55 | #include <sys/socketvar.h> |
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| 56 | |
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| 57 | #include <net/if.h> |
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| 58 | #include <net/route.h> |
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| 59 | |
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| 60 | #include <netinet/in.h> |
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| 61 | #include <net/if_types.h> |
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| 62 | #include <net/if_dl.h> |
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| 63 | #include <netinet/if_ether.h> |
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| 64 | |
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| 65 | #include <nfs/rpcv2.h> |
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| 66 | #include <nfs/nfsproto.h> |
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| 67 | #include <nfs/nfs.h> |
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| 68 | #include <nfs/nfsdiskless.h> |
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| 69 | #include <nfs/krpc.h> |
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| 70 | #include <nfs/xdr_subs.h> |
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| 71 | |
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| 72 | #define BOOTP_MIN_LEN 300 /* Minimum size of bootp udp packet */ |
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| 73 | |
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| 74 | /* |
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| 75 | * What is the longest we will wait before re-sending a request? |
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| 76 | * Note this is also the frequency of "RPC timeout" messages. |
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| 77 | * The re-send loop count sup linearly to this maximum, so the |
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| 78 | * first complaint will happen after (1+2+3+4+5)=15 seconds. |
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| 79 | */ |
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| 80 | #define MAX_RESEND_DELAY 5 /* seconds */ |
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| 81 | |
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| 82 | /* Definitions from RFC951 */ |
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| 83 | struct bootp_packet { |
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| 84 | u_int8_t op; |
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| 85 | u_int8_t htype; |
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| 86 | u_int8_t hlen; |
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| 87 | u_int8_t hops; |
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| 88 | u_int32_t xid; |
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| 89 | u_int16_t secs; |
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| 90 | u_int16_t flags; |
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| 91 | struct in_addr ciaddr; |
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| 92 | struct in_addr yiaddr; |
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| 93 | struct in_addr siaddr; |
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| 94 | struct in_addr giaddr; |
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| 95 | unsigned char chaddr[16]; |
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| 96 | char sname[64]; |
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| 97 | char file[128]; |
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| 98 | unsigned char vend[256]; |
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| 99 | }; |
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| 100 | |
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| 101 | #define IPPORT_BOOTPC 68 |
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| 102 | #define IPPORT_BOOTPS 67 |
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| 103 | |
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| 104 | extern int nfs_diskless_valid; |
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| 105 | extern struct nfsv3_diskless nfsv3_diskless; |
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| 106 | |
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| 107 | /* mountd RPC */ |
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[ff0f694d] | 108 | #if !defined(__rtems__) |
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[39e6e65a] | 109 | static int md_mount __P((struct sockaddr_in *mdsin, char *path, |
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| 110 | u_char *fhp, int *fhsizep, struct nfs_args *args,struct proc *procp)); |
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| 111 | static int md_lookup_swap __P((struct sockaddr_in *mdsin,char *path, |
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| 112 | u_char *fhp, int *fhsizep, |
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| 113 | struct nfs_args *args, |
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| 114 | struct proc *procp)); |
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| 115 | static int setfs __P((struct sockaddr_in *addr, char *path, char *p)); |
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[ff0f694d] | 116 | #endif |
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[39e6e65a] | 117 | static int getdec __P((char **ptr)); |
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| 118 | static char *substr __P((char *a,char *b)); |
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[ff0f694d] | 119 | #if !defined(__rtems__) |
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[39e6e65a] | 120 | static void mountopts __P((struct nfs_args *args, char *p)); |
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| 121 | static int xdr_opaque_decode __P((struct mbuf **ptr,u_char *buf, |
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| 122 | int len)); |
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| 123 | static int xdr_int_decode __P((struct mbuf **ptr,int *iptr)); |
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[ff0f694d] | 124 | #endif |
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[39e6e65a] | 125 | static void printip __P((char *prefix,struct in_addr addr)); |
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| 126 | |
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| 127 | #ifdef BOOTP_DEBUG |
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| 128 | void bootpboot_p_sa(struct sockaddr *sa,struct sockaddr *ma); |
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| 129 | void bootpboot_p_ma(struct sockaddr *ma); |
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| 130 | void bootpboot_p_rtentry(struct rtentry *rt); |
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| 131 | void bootpboot_p_tree(struct radix_node *rn); |
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| 132 | void bootpboot_p_rtlist(void); |
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| 133 | void bootpboot_p_iflist(void); |
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| 134 | #endif |
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| 135 | |
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| 136 | int bootpc_call(struct bootp_packet *call, |
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| 137 | struct bootp_packet *reply, |
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| 138 | struct proc *procp); |
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| 139 | |
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| 140 | int bootpc_fakeup_interface(struct ifreq *ireq,struct socket *so, |
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| 141 | struct proc *procp); |
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| 142 | |
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| 143 | int |
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| 144 | bootpc_adjust_interface(struct ifreq *ireq,struct socket *so, |
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| 145 | struct sockaddr_in *myaddr, |
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| 146 | struct sockaddr_in *netmask, |
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| 147 | struct sockaddr_in *gw, |
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| 148 | struct proc *procp); |
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| 149 | |
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| 150 | void bootpc_init(void); |
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| 151 | |
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| 152 | #ifdef BOOTP_DEBUG |
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| 153 | void bootpboot_p_sa(sa,ma) |
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| 154 | struct sockaddr *sa; |
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| 155 | struct sockaddr *ma; |
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| 156 | { |
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| 157 | if (!sa) { |
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| 158 | printf("(sockaddr *) <null>"); |
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| 159 | return; |
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| 160 | } |
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| 161 | switch (sa->sa_family) { |
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| 162 | case AF_INET: |
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| 163 | { |
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| 164 | struct sockaddr_in *sin = (struct sockaddr_in *) sa; |
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| 165 | printf("inet %x",ntohl(sin->sin_addr.s_addr)); |
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| 166 | if (ma) { |
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| 167 | struct sockaddr_in *sin = (struct sockaddr_in *) ma; |
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| 168 | printf(" mask %x",ntohl(sin->sin_addr.s_addr)); |
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| 169 | } |
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| 170 | } |
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| 171 | break; |
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| 172 | case AF_LINK: |
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| 173 | { |
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| 174 | struct sockaddr_dl *sli = (struct sockaddr_dl *) sa; |
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| 175 | int i; |
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| 176 | printf("link %.*s ",sli->sdl_nlen,sli->sdl_data); |
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| 177 | for (i=0;i<sli->sdl_alen;i++) { |
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| 178 | if (i>0) |
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| 179 | printf(":"); |
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| 180 | printf("%x",(unsigned char) sli->sdl_data[i+sli->sdl_nlen]); |
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| 181 | } |
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| 182 | } |
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| 183 | break; |
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| 184 | default: |
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| 185 | printf("af%d",sa->sa_family); |
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| 186 | } |
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| 187 | } |
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| 188 | |
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| 189 | void bootpboot_p_ma(ma) |
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| 190 | struct sockaddr *ma; |
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| 191 | { |
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| 192 | if (!ma) { |
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| 193 | printf("<null>"); |
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| 194 | return; |
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| 195 | } |
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| 196 | printf("%x",*(int*)ma); |
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| 197 | } |
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| 198 | |
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| 199 | void bootpboot_p_rtentry(rt) |
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| 200 | struct rtentry *rt; |
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| 201 | { |
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| 202 | bootpboot_p_sa(rt_key(rt),rt_mask(rt)); |
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| 203 | printf(" "); |
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| 204 | bootpboot_p_ma(rt->rt_genmask); |
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| 205 | printf(" "); |
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| 206 | bootpboot_p_sa(rt->rt_gateway,NULL); |
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| 207 | printf(" "); |
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| 208 | printf("flags %x",(unsigned short) rt->rt_flags); |
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| 209 | printf(" %d",rt->rt_rmx.rmx_expire); |
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| 210 | printf(" %s%d\n",rt->rt_ifp->if_name,rt->rt_ifp->if_unit); |
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| 211 | } |
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| 212 | void bootpboot_p_tree(rn) |
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| 213 | struct radix_node *rn; |
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| 214 | { |
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| 215 | while (rn) { |
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| 216 | if (rn->rn_b < 0) { |
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| 217 | if (rn->rn_flags & RNF_ROOT) { |
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| 218 | } else { |
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| 219 | bootpboot_p_rtentry((struct rtentry *) rn); |
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| 220 | } |
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| 221 | rn = rn->rn_dupedkey; |
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| 222 | } else { |
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| 223 | bootpboot_p_tree(rn->rn_l); |
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| 224 | bootpboot_p_tree(rn->rn_r); |
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| 225 | return; |
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| 226 | } |
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| 227 | |
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| 228 | } |
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| 229 | } |
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| 230 | |
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| 231 | void bootpboot_p_rtlist(void) |
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| 232 | { |
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| 233 | printf("Routing table:\n"); |
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| 234 | bootpboot_p_tree(rt_tables[AF_INET]->rnh_treetop); |
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| 235 | } |
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| 236 | |
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| 237 | void bootpboot_p_iflist(void) |
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| 238 | { |
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| 239 | struct ifnet *ifp; |
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| 240 | struct ifaddr *ifa; |
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| 241 | printf("Interface list:\n"); |
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| 242 | for (ifp = TAILQ_FIRST(&ifnet); ifp != 0; ifp = TAILQ_NEXT(ifp,if_link)) |
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| 243 | { |
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| 244 | for (ifa = TAILQ_FIRST(&ifp->if_addrhead) ;ifa; |
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| 245 | ifa=TAILQ_NEXT(ifa,ifa_link)) |
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| 246 | if (ifa->ifa_addr->sa_family == AF_INET ) { |
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| 247 | printf("%s%d flags %x, addr %x, bcast %x, net %x\n", |
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| 248 | ifp->if_name,ifp->if_unit, |
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| 249 | (unsigned short) ifp->if_flags, |
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| 250 | ntohl(((struct sockaddr_in *) ifa->ifa_addr)->sin_addr.s_addr), |
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| 251 | ntohl(((struct sockaddr_in *) ifa->ifa_dstaddr)->sin_addr.s_addr), |
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| 252 | ntohl(((struct sockaddr_in *) ifa->ifa_netmask)->sin_addr.s_addr) |
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| 253 | ); |
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| 254 | } |
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| 255 | } |
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| 256 | } |
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| 257 | #endif |
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| 258 | |
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| 259 | int |
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| 260 | bootpc_call(call,reply,procp) |
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| 261 | struct bootp_packet *call; |
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| 262 | struct bootp_packet *reply; /* output */ |
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| 263 | struct proc *procp; |
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| 264 | { |
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| 265 | struct socket *so; |
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[ff0f694d] | 266 | struct sockaddr_in *sin; |
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[39e6e65a] | 267 | struct mbuf *m, *nam; |
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| 268 | struct uio auio; |
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| 269 | struct iovec aio; |
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| 270 | int error, rcvflg, timo, secs, len; |
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| 271 | |
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| 272 | /* Free at end if not null. */ |
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| 273 | nam = NULL; |
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| 274 | |
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| 275 | /* |
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| 276 | * Create socket and set its recieve timeout. |
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| 277 | */ |
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| 278 | if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0,procp))) |
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| 279 | goto out; |
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| 280 | |
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| 281 | m = m_get(M_WAIT, MT_SOOPTS); |
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| 282 | if (m == NULL) { |
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| 283 | error = ENOBUFS; |
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| 284 | goto out; |
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| 285 | } else { |
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| 286 | struct timeval *tv; |
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| 287 | tv = mtod(m, struct timeval *); |
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| 288 | m->m_len = sizeof(*tv); |
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| 289 | tv->tv_sec = 1; |
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| 290 | tv->tv_usec = 0; |
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| 291 | if ((error = sosetopt(so, SOL_SOCKET, SO_RCVTIMEO, m))) |
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| 292 | goto out; |
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| 293 | } |
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| 294 | |
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| 295 | /* |
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| 296 | * Enable broadcast. |
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| 297 | */ |
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| 298 | { |
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| 299 | int *on; |
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| 300 | m = m_get(M_WAIT, MT_SOOPTS); |
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| 301 | if (m == NULL) { |
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| 302 | error = ENOBUFS; |
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| 303 | goto out; |
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| 304 | } |
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| 305 | on = mtod(m, int *); |
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| 306 | m->m_len = sizeof(*on); |
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| 307 | *on = 1; |
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| 308 | if ((error = sosetopt(so, SOL_SOCKET, SO_BROADCAST, m))) |
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| 309 | goto out; |
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| 310 | } |
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| 311 | |
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| 312 | /* |
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| 313 | * Bind the local endpoint to a bootp client port. |
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| 314 | */ |
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| 315 | m = m_getclr(M_WAIT, MT_SONAME); |
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| 316 | sin = mtod(m, struct sockaddr_in *); |
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| 317 | sin->sin_len = m->m_len = sizeof(*sin); |
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| 318 | sin->sin_family = AF_INET; |
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| 319 | sin->sin_addr.s_addr = INADDR_ANY; |
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| 320 | sin->sin_port = htons(IPPORT_BOOTPC); |
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| 321 | error = sobind(so, m); |
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| 322 | m_freem(m); |
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| 323 | if (error) { |
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| 324 | printf("bind failed\n"); |
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| 325 | goto out; |
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| 326 | } |
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| 327 | |
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| 328 | /* |
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| 329 | * Setup socket address for the server. |
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| 330 | */ |
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| 331 | nam = m_get(M_WAIT, MT_SONAME); |
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| 332 | if (nam == NULL) { |
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| 333 | error = ENOBUFS; |
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| 334 | goto out; |
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| 335 | } |
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| 336 | sin = mtod(nam, struct sockaddr_in *); |
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| 337 | sin-> sin_len = sizeof(*sin); |
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| 338 | sin-> sin_family = AF_INET; |
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| 339 | sin->sin_addr.s_addr = INADDR_BROADCAST; |
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| 340 | sin->sin_port = htons(IPPORT_BOOTPS); |
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| 341 | |
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| 342 | nam->m_len = sizeof(*sin); |
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| 343 | |
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| 344 | /* |
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| 345 | * Send it, repeatedly, until a reply is received, |
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| 346 | * but delay each re-send by an increasing amount. |
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| 347 | * If the delay hits the maximum, start complaining. |
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| 348 | */ |
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| 349 | timo = 0; |
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| 350 | for (;;) { |
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| 351 | /* Send BOOTP request (or re-send). */ |
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| 352 | |
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| 353 | aio.iov_base = (caddr_t) call; |
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| 354 | aio.iov_len = sizeof(*call); |
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| 355 | |
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| 356 | auio.uio_iov = &aio; |
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| 357 | auio.uio_iovcnt = 1; |
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| 358 | auio.uio_segflg = UIO_SYSSPACE; |
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| 359 | auio.uio_rw = UIO_WRITE; |
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| 360 | auio.uio_offset = 0; |
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| 361 | auio.uio_resid = sizeof(*call); |
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| 362 | auio.uio_procp = procp; |
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| 363 | |
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| 364 | error = sosend(so, nam, &auio, NULL, NULL, 0); |
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| 365 | if (error) { |
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| 366 | printf("bootpc_call: sosend: %d\n", error); |
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| 367 | goto out; |
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| 368 | } |
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| 369 | |
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| 370 | /* Determine new timeout. */ |
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| 371 | if (timo < MAX_RESEND_DELAY) |
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| 372 | timo++; |
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| 373 | else |
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| 374 | printf("BOOTP timeout for server 0x%x\n", |
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| 375 | (int)ntohl(sin->sin_addr.s_addr)); |
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| 376 | |
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| 377 | /* |
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| 378 | * Wait for up to timo seconds for a reply. |
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| 379 | * The socket receive timeout was set to 1 second. |
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| 380 | */ |
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| 381 | secs = timo; |
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| 382 | while (secs > 0) { |
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| 383 | aio.iov_base = (caddr_t) reply; |
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| 384 | aio.iov_len = sizeof(*reply); |
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| 385 | |
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| 386 | auio.uio_iov = &aio; |
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| 387 | auio.uio_iovcnt = 1; |
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| 388 | auio.uio_segflg = UIO_SYSSPACE; |
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| 389 | auio.uio_rw = UIO_READ; |
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| 390 | auio.uio_offset = 0; |
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| 391 | auio.uio_resid = sizeof(*reply); |
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| 392 | auio.uio_procp = procp; |
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| 393 | |
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| 394 | rcvflg = 0; |
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| 395 | error = soreceive(so, NULL, &auio, NULL, NULL, &rcvflg); |
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| 396 | if (error == EWOULDBLOCK) { |
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| 397 | secs--; |
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| 398 | call->secs=htons(ntohs(call->secs)+1); |
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| 399 | continue; |
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| 400 | } |
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| 401 | if (error) |
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| 402 | goto out; |
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| 403 | len = sizeof(*reply) - auio.uio_resid; |
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| 404 | |
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| 405 | /* Do we have the required number of bytes ? */ |
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| 406 | if (len < BOOTP_MIN_LEN) |
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| 407 | continue; |
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| 408 | |
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| 409 | /* Is it the right reply? */ |
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| 410 | if (reply->op != 2) |
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| 411 | continue; |
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| 412 | |
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| 413 | if (reply->xid != call->xid) |
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| 414 | continue; |
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| 415 | |
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| 416 | if (reply->hlen != call->hlen) |
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| 417 | continue; |
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| 418 | |
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| 419 | if (bcmp(reply->chaddr,call->chaddr,call->hlen)) |
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| 420 | continue; |
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| 421 | |
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| 422 | goto gotreply; /* break two levels */ |
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| 423 | |
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| 424 | } /* while secs */ |
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| 425 | } /* forever send/receive */ |
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| 426 | |
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| 427 | error = ETIMEDOUT; |
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| 428 | goto out; |
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| 429 | |
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| 430 | gotreply: |
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| 431 | out: |
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| 432 | if (nam) m_freem(nam); |
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| 433 | soclose(so); |
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| 434 | return error; |
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| 435 | } |
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| 436 | |
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| 437 | int |
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| 438 | bootpc_fakeup_interface(struct ifreq *ireq,struct socket *so, |
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| 439 | struct proc *procp) |
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| 440 | { |
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| 441 | struct sockaddr_in *sin; |
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| 442 | int error; |
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| 443 | struct sockaddr_in dst; |
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| 444 | struct sockaddr_in gw; |
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| 445 | struct sockaddr_in mask; |
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| 446 | |
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| 447 | /* |
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| 448 | * Bring up the interface. |
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| 449 | * |
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| 450 | * Get the old interface flags and or IFF_UP into them; if |
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| 451 | * IFF_UP set blindly, interface selection can be clobbered. |
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| 452 | */ |
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| 453 | error = ifioctl(so, SIOCGIFFLAGS, (caddr_t)ireq, procp); |
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| 454 | if (error) |
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| 455 | panic("bootpc_fakeup_interface: GIFFLAGS, error=%d", error); |
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| 456 | ireq->ifr_flags |= IFF_UP; |
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| 457 | error = ifioctl(so, SIOCSIFFLAGS, (caddr_t)ireq, procp); |
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| 458 | if (error) |
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| 459 | panic("bootpc_fakeup_interface: SIFFLAGS, error=%d", error); |
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| 460 | |
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| 461 | /* |
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| 462 | * Do enough of ifconfig(8) so that the chosen interface |
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| 463 | * can talk to the servers. (just set the address) |
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| 464 | */ |
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| 465 | |
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| 466 | /* addr is 0.0.0.0 */ |
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| 467 | |
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| 468 | sin = (struct sockaddr_in *)&ireq->ifr_addr; |
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| 469 | bzero((caddr_t)sin, sizeof(*sin)); |
---|
| 470 | sin->sin_len = sizeof(*sin); |
---|
| 471 | sin->sin_family = AF_INET; |
---|
| 472 | sin->sin_addr.s_addr = INADDR_ANY; |
---|
| 473 | error = ifioctl(so, SIOCSIFADDR, (caddr_t)ireq, procp); |
---|
| 474 | if (error) |
---|
| 475 | panic("bootpc_fakeup_interface: set if addr, error=%d", error); |
---|
| 476 | |
---|
| 477 | /* netmask is 0.0.0.0 */ |
---|
| 478 | |
---|
| 479 | sin = (struct sockaddr_in *)&ireq->ifr_addr; |
---|
| 480 | bzero((caddr_t)sin, sizeof(*sin)); |
---|
| 481 | sin->sin_len = sizeof(*sin); |
---|
| 482 | sin->sin_family = AF_INET; |
---|
| 483 | sin->sin_addr.s_addr = INADDR_ANY; |
---|
| 484 | error = ifioctl(so, SIOCSIFNETMASK, (caddr_t)ireq, procp); |
---|
| 485 | if (error) |
---|
| 486 | panic("bootpc_fakeup_interface: set if net addr, error=%d", error); |
---|
| 487 | |
---|
| 488 | /* Broadcast is 255.255.255.255 */ |
---|
| 489 | |
---|
| 490 | sin = (struct sockaddr_in *)&ireq->ifr_addr; |
---|
| 491 | bzero((caddr_t)sin, sizeof(*sin)); |
---|
| 492 | sin->sin_len = sizeof(*sin); |
---|
| 493 | sin->sin_family = AF_INET; |
---|
| 494 | sin->sin_addr.s_addr = INADDR_BROADCAST; |
---|
| 495 | error = ifioctl(so, SIOCSIFBRDADDR, (caddr_t)ireq, procp); |
---|
| 496 | if (error) |
---|
| 497 | panic("bootpc_fakeup_interface: set if broadcast addr, error=%d", error); |
---|
| 498 | |
---|
| 499 | /* Add default route to 0.0.0.0 so we can send data */ |
---|
| 500 | |
---|
| 501 | bzero((caddr_t) &dst, sizeof(dst)); |
---|
| 502 | dst.sin_len=sizeof(dst); |
---|
| 503 | dst.sin_family=AF_INET; |
---|
| 504 | dst.sin_addr.s_addr = htonl(0); |
---|
| 505 | |
---|
| 506 | bzero((caddr_t) &gw, sizeof(gw)); |
---|
| 507 | gw.sin_len=sizeof(gw); |
---|
| 508 | gw.sin_family=AF_INET; |
---|
| 509 | gw.sin_addr.s_addr = htonl(0x0); |
---|
| 510 | |
---|
| 511 | bzero((caddr_t) &mask, sizeof(mask)); |
---|
| 512 | mask.sin_len=sizeof(mask); |
---|
| 513 | mask.sin_family=AF_INET; |
---|
| 514 | mask.sin_addr.s_addr = htonl(0); |
---|
| 515 | |
---|
| 516 | error = rtrequest(RTM_ADD, |
---|
| 517 | (struct sockaddr *) &dst, |
---|
| 518 | (struct sockaddr *) &gw, |
---|
| 519 | (struct sockaddr *) &mask, |
---|
| 520 | RTF_UP | RTF_STATIC |
---|
| 521 | , NULL); |
---|
| 522 | if (error) |
---|
| 523 | printf("bootpc_fakeup_interface: add default route, error=%d\n", error); |
---|
| 524 | return error; |
---|
| 525 | } |
---|
| 526 | |
---|
| 527 | int |
---|
| 528 | bootpc_adjust_interface(struct ifreq *ireq,struct socket *so, |
---|
| 529 | struct sockaddr_in *myaddr, |
---|
| 530 | struct sockaddr_in *netmask, |
---|
| 531 | struct sockaddr_in *gw, |
---|
| 532 | struct proc *procp) |
---|
| 533 | { |
---|
| 534 | int error; |
---|
| 535 | struct sockaddr_in oldgw; |
---|
| 536 | struct sockaddr_in olddst; |
---|
| 537 | struct sockaddr_in oldmask; |
---|
| 538 | struct sockaddr_in *sin; |
---|
| 539 | |
---|
| 540 | /* Remove old default route to 0.0.0.0 */ |
---|
| 541 | |
---|
| 542 | bzero((caddr_t) &olddst, sizeof(olddst)); |
---|
| 543 | olddst.sin_len=sizeof(olddst); |
---|
| 544 | olddst.sin_family=AF_INET; |
---|
| 545 | olddst.sin_addr.s_addr = INADDR_ANY; |
---|
| 546 | |
---|
| 547 | bzero((caddr_t) &oldgw, sizeof(oldgw)); |
---|
| 548 | oldgw.sin_len=sizeof(oldgw); |
---|
| 549 | oldgw.sin_family=AF_INET; |
---|
| 550 | oldgw.sin_addr.s_addr = INADDR_ANY; |
---|
| 551 | |
---|
| 552 | bzero((caddr_t) &oldmask, sizeof(oldmask)); |
---|
| 553 | oldmask.sin_len=sizeof(oldmask); |
---|
| 554 | oldmask.sin_family=AF_INET; |
---|
| 555 | oldmask.sin_addr.s_addr = INADDR_ANY; |
---|
| 556 | |
---|
| 557 | error = rtrequest(RTM_DELETE, |
---|
| 558 | (struct sockaddr *) &olddst, |
---|
| 559 | (struct sockaddr *) &oldgw, |
---|
| 560 | (struct sockaddr *) &oldmask, |
---|
| 561 | (RTF_UP | RTF_STATIC), NULL); |
---|
| 562 | if (error) { |
---|
| 563 | printf("nfs_boot: del default route, error=%d\n", error); |
---|
| 564 | return error; |
---|
| 565 | } |
---|
| 566 | |
---|
| 567 | /* |
---|
| 568 | * Do enough of ifconfig(8) so that the chosen interface |
---|
| 569 | * can talk to the servers. (just set the address) |
---|
| 570 | */ |
---|
| 571 | bcopy(netmask,&ireq->ifr_addr,sizeof(*netmask)); |
---|
| 572 | error = ifioctl(so, SIOCSIFNETMASK, (caddr_t)ireq, procp); |
---|
| 573 | if (error) |
---|
| 574 | panic("nfs_boot: set if netmask, error=%d", error); |
---|
| 575 | |
---|
| 576 | /* Broadcast is with host part of IP address all 1's */ |
---|
| 577 | |
---|
| 578 | sin = (struct sockaddr_in *)&ireq->ifr_addr; |
---|
| 579 | bzero((caddr_t)sin, sizeof(*sin)); |
---|
| 580 | sin->sin_len = sizeof(*sin); |
---|
| 581 | sin->sin_family = AF_INET; |
---|
| 582 | sin->sin_addr.s_addr = myaddr->sin_addr.s_addr | ~ netmask->sin_addr.s_addr; |
---|
| 583 | error = ifioctl(so, SIOCSIFBRDADDR, (caddr_t)ireq, procp); |
---|
| 584 | if (error) |
---|
| 585 | panic("bootpc_call: set if broadcast addr, error=%d", error); |
---|
| 586 | |
---|
| 587 | bcopy(myaddr,&ireq->ifr_addr,sizeof(*myaddr)); |
---|
| 588 | error = ifioctl(so, SIOCSIFADDR, (caddr_t)ireq, procp); |
---|
| 589 | if (error) |
---|
| 590 | panic("nfs_boot: set if addr, error=%d", error); |
---|
| 591 | |
---|
| 592 | /* Add new default route */ |
---|
| 593 | |
---|
| 594 | error = rtrequest(RTM_ADD, |
---|
| 595 | (struct sockaddr *) &olddst, |
---|
| 596 | (struct sockaddr *) gw, |
---|
| 597 | (struct sockaddr *) &oldmask, |
---|
| 598 | (RTF_UP | RTF_GATEWAY | RTF_STATIC), NULL); |
---|
| 599 | if (error) { |
---|
| 600 | printf("nfs_boot: add net route, error=%d\n", error); |
---|
| 601 | return error; |
---|
| 602 | } |
---|
| 603 | |
---|
| 604 | return 0; |
---|
| 605 | } |
---|
| 606 | |
---|
[ff0f694d] | 607 | #if !defined(__rtems__) |
---|
[39e6e65a] | 608 | static int setfs(addr, path, p) |
---|
| 609 | struct sockaddr_in *addr; |
---|
| 610 | char *path; |
---|
| 611 | char *p; |
---|
| 612 | { |
---|
| 613 | unsigned ip = 0; |
---|
| 614 | int val; |
---|
| 615 | |
---|
| 616 | if (((val = getdec(&p)) < 0) || (val > 255)) return(0); |
---|
| 617 | ip = val << 24; |
---|
| 618 | if (*p != '.') return(0); |
---|
| 619 | p++; |
---|
| 620 | if (((val = getdec(&p)) < 0) || (val > 255)) return(0); |
---|
| 621 | ip |= (val << 16); |
---|
| 622 | if (*p != '.') return(0); |
---|
| 623 | p++; |
---|
| 624 | if (((val = getdec(&p)) < 0) || (val > 255)) return(0); |
---|
| 625 | ip |= (val << 8); |
---|
| 626 | if (*p != '.') return(0); |
---|
| 627 | p++; |
---|
| 628 | if (((val = getdec(&p)) < 0) || (val > 255)) return(0); |
---|
| 629 | ip |= val; |
---|
| 630 | if (*p != ':') return(0); |
---|
| 631 | p++; |
---|
| 632 | |
---|
| 633 | addr->sin_addr.s_addr = htonl(ip); |
---|
| 634 | addr->sin_len = sizeof(struct sockaddr_in); |
---|
| 635 | addr->sin_family = AF_INET; |
---|
| 636 | |
---|
| 637 | strncpy(path,p,MNAMELEN-1); |
---|
| 638 | return(1); |
---|
| 639 | } |
---|
[ff0f694d] | 640 | #endif |
---|
[39e6e65a] | 641 | |
---|
| 642 | static int getdec(ptr) |
---|
| 643 | char **ptr; |
---|
| 644 | { |
---|
| 645 | char *p = *ptr; |
---|
| 646 | int ret=0; |
---|
| 647 | if ((*p < '0') || (*p > '9')) return(-1); |
---|
| 648 | while ((*p >= '0') && (*p <= '9')) { |
---|
| 649 | ret = ret*10 + (*p - '0'); |
---|
| 650 | p++; |
---|
| 651 | } |
---|
| 652 | *ptr = p; |
---|
| 653 | return(ret); |
---|
| 654 | } |
---|
| 655 | |
---|
| 656 | static char *substr(a,b) |
---|
| 657 | char *a,*b; |
---|
| 658 | { |
---|
| 659 | char *loc1; |
---|
| 660 | char *loc2; |
---|
| 661 | |
---|
| 662 | while (*a != '\0') { |
---|
| 663 | loc1 = a; |
---|
| 664 | loc2 = b; |
---|
| 665 | while (*loc1 == *loc2++) { |
---|
| 666 | if (*loc1 == '\0') return (0); |
---|
| 667 | loc1++; |
---|
| 668 | if (*loc2 == '\0') return (loc1); |
---|
| 669 | } |
---|
| 670 | a++; |
---|
| 671 | } |
---|
| 672 | return (0); |
---|
| 673 | } |
---|
| 674 | |
---|
| 675 | static void printip(char *prefix,struct in_addr addr) |
---|
| 676 | { |
---|
| 677 | unsigned int ip; |
---|
| 678 | |
---|
| 679 | ip = ntohl(addr.s_addr); |
---|
| 680 | |
---|
| 681 | printf("%s is %d.%d.%d.%d\n",prefix, |
---|
| 682 | ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 ); |
---|
| 683 | } |
---|
| 684 | |
---|
| 685 | void |
---|
| 686 | bootpc_init(void) |
---|
| 687 | { |
---|
| 688 | struct bootp_packet call; |
---|
| 689 | struct bootp_packet reply; |
---|
| 690 | static u_int32_t xid = ~0xFF; |
---|
| 691 | |
---|
| 692 | struct ifreq ireq; |
---|
| 693 | struct ifnet *ifp; |
---|
| 694 | struct socket *so; |
---|
| 695 | int error; |
---|
| 696 | int code,ncode,len; |
---|
[ff0f694d] | 697 | int j; |
---|
[39e6e65a] | 698 | char *p; |
---|
| 699 | unsigned int ip; |
---|
| 700 | |
---|
| 701 | struct sockaddr_in myaddr; |
---|
| 702 | struct sockaddr_in netmask; |
---|
| 703 | struct sockaddr_in gw; |
---|
| 704 | int gotgw=0; |
---|
| 705 | int gotnetmask=0; |
---|
[ff0f694d] | 706 | #if !defined(__rtems__) |
---|
[39e6e65a] | 707 | int gotrootpath=0; |
---|
| 708 | int gotswappath=0; |
---|
[ff0f694d] | 709 | #endif |
---|
[39e6e65a] | 710 | char lookup_path[24]; |
---|
| 711 | |
---|
| 712 | #define EALEN 6 |
---|
[ff0f694d] | 713 | #if !defined(__rtems__) |
---|
[39e6e65a] | 714 | unsigned char ea[EALEN]; |
---|
[ff0f694d] | 715 | #endif |
---|
[39e6e65a] | 716 | struct ifaddr *ifa; |
---|
| 717 | struct sockaddr_dl *sdl = NULL; |
---|
| 718 | char *delim; |
---|
| 719 | struct proc *procp = NULL; |
---|
| 720 | |
---|
| 721 | /* |
---|
| 722 | * If already filled in, don't touch it here |
---|
| 723 | */ |
---|
| 724 | if (nfs_diskless_valid) |
---|
| 725 | return; |
---|
| 726 | |
---|
| 727 | /* |
---|
| 728 | * Bump time if 0. |
---|
| 729 | if (!time.tv_sec) |
---|
| 730 | time.tv_sec++; |
---|
| 731 | */ |
---|
| 732 | |
---|
| 733 | /* |
---|
| 734 | * Find a network interface. |
---|
| 735 | */ |
---|
| 736 | for (ifp = ifnet; ifp != 0; ifp = ifp->if_next) |
---|
| 737 | if ((ifp->if_flags & |
---|
| 738 | (IFF_LOOPBACK|IFF_POINTOPOINT)) == 0) |
---|
| 739 | break; |
---|
| 740 | if (ifp == NULL) |
---|
| 741 | panic("bootpc_init: no suitable interface"); |
---|
| 742 | bzero(&ireq,sizeof(ireq)); |
---|
| 743 | sprintf(ireq.ifr_name, "%s%d", ifp->if_name,ifp->if_unit); |
---|
| 744 | printf("bootpc_init: using network interface '%s'\n", |
---|
| 745 | ireq.ifr_name); |
---|
| 746 | |
---|
| 747 | if ((error = socreate(AF_INET, &so, SOCK_DGRAM, 0,procp)) != 0) |
---|
| 748 | panic("nfs_boot: socreate, error=%d", error); |
---|
| 749 | |
---|
| 750 | bootpc_fakeup_interface(&ireq,so,procp); |
---|
| 751 | |
---|
| 752 | printf("Bootpc testing starting\n"); |
---|
| 753 | |
---|
| 754 | /* Get HW address */ |
---|
| 755 | |
---|
| 756 | for (ifa = ifp->if_addrlist;ifa; ifa = ifa->ifa_next) |
---|
| 757 | if (ifa->ifa_addr->sa_family == AF_LINK && |
---|
| 758 | (sdl = ((struct sockaddr_dl *) ifa->ifa_addr)) && |
---|
| 759 | sdl->sdl_type == IFT_ETHER) |
---|
| 760 | break; |
---|
| 761 | |
---|
| 762 | if (!sdl) |
---|
| 763 | panic("bootpc: Unable to find HW address"); |
---|
| 764 | if (sdl->sdl_alen != EALEN ) |
---|
| 765 | panic("bootpc: HW address len is %d, expected value is %d", |
---|
| 766 | sdl->sdl_alen,EALEN); |
---|
| 767 | |
---|
| 768 | printf("bootpc hw address is "); |
---|
| 769 | delim=""; |
---|
| 770 | for (j=0;j<sdl->sdl_alen;j++) { |
---|
| 771 | printf("%s%x",delim,((unsigned char *)LLADDR(sdl))[j]); |
---|
| 772 | delim=":"; |
---|
| 773 | } |
---|
| 774 | printf("\n"); |
---|
| 775 | |
---|
| 776 | #if 0 |
---|
| 777 | bootpboot_p_iflist(); |
---|
| 778 | bootpboot_p_rtlist(); |
---|
| 779 | #endif |
---|
| 780 | |
---|
| 781 | bzero((caddr_t) &call, sizeof(call)); |
---|
| 782 | |
---|
| 783 | /* bootpc part */ |
---|
| 784 | call.op = 1; /* BOOTREQUEST */ |
---|
| 785 | call.htype= 1; /* 10mb ethernet */ |
---|
| 786 | call.hlen=sdl->sdl_alen; /* Hardware address length */ |
---|
| 787 | call.hops=0; |
---|
| 788 | xid++; |
---|
| 789 | call.xid = txdr_unsigned(xid); |
---|
| 790 | bcopy(LLADDR(sdl),&call.chaddr,sdl->sdl_alen); |
---|
| 791 | |
---|
| 792 | call.vend[0]=99; |
---|
| 793 | call.vend[1]=130; |
---|
| 794 | call.vend[2]=83; |
---|
| 795 | call.vend[3]=99; |
---|
| 796 | call.vend[4]=255; |
---|
| 797 | |
---|
| 798 | call.secs = 0; |
---|
| 799 | call.flags = htons(0x8000); /* We need an broadcast answer */ |
---|
| 800 | |
---|
| 801 | error = bootpc_call(&call,&reply,procp); |
---|
| 802 | |
---|
| 803 | if (error) |
---|
| 804 | panic("BOOTP call failed -- error %d", error); |
---|
| 805 | |
---|
| 806 | bzero(&myaddr,sizeof(myaddr)); |
---|
| 807 | bzero(&netmask,sizeof(netmask)); |
---|
| 808 | bzero(&gw,sizeof(gw)); |
---|
| 809 | |
---|
| 810 | myaddr.sin_len = sizeof(myaddr); |
---|
| 811 | myaddr.sin_family = AF_INET; |
---|
| 812 | |
---|
| 813 | netmask.sin_len = sizeof(netmask); |
---|
| 814 | netmask.sin_family = AF_INET; |
---|
| 815 | |
---|
| 816 | gw.sin_len = sizeof(gw); |
---|
| 817 | gw.sin_family= AF_INET; |
---|
| 818 | |
---|
| 819 | rtems_bsdnet_bootp_server_address = reply.siaddr; |
---|
| 820 | rtems_bsdnet_log_host_address = reply.siaddr; |
---|
| 821 | |
---|
| 822 | myaddr.sin_addr = reply.yiaddr; |
---|
| 823 | |
---|
| 824 | ip = ntohl(myaddr.sin_addr.s_addr); |
---|
| 825 | sprintf(lookup_path,"swap.%d.%d.%d.%d", |
---|
| 826 | ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 ); |
---|
| 827 | |
---|
| 828 | printip("My ip address",myaddr.sin_addr); |
---|
| 829 | |
---|
| 830 | printip("Server ip address",reply.siaddr); |
---|
| 831 | |
---|
| 832 | gw.sin_addr = reply.giaddr; |
---|
| 833 | printip("Gateway ip address",reply.giaddr); |
---|
| 834 | |
---|
| 835 | if (reply.sname[0]) |
---|
| 836 | printf("Server name is %s\n",reply.sname); |
---|
| 837 | if (reply.file[0]) |
---|
| 838 | printf("boot file is %s\n",reply.file); |
---|
| 839 | rtems_bsdnet_bootp_boot_file_name = strdup (reply.file); |
---|
| 840 | if (reply.vend[0]==99 && reply.vend[1]==130 && |
---|
| 841 | reply.vend[2]==83 && reply.vend[3]==99) { |
---|
| 842 | j=4; |
---|
| 843 | ncode = reply.vend[j]; |
---|
| 844 | while (j<sizeof(reply.vend)) { |
---|
| 845 | code = reply.vend[j] = ncode; |
---|
| 846 | if (code==255) |
---|
| 847 | break; |
---|
| 848 | if (code==0) { |
---|
| 849 | j++; |
---|
| 850 | continue; |
---|
| 851 | } |
---|
| 852 | len = reply.vend[j+1]; |
---|
| 853 | j+=2; |
---|
| 854 | if (len+j>=sizeof(reply.vend)) { |
---|
| 855 | printf("Truncated field"); |
---|
| 856 | break; |
---|
| 857 | } |
---|
| 858 | ncode = reply.vend[j+len]; |
---|
| 859 | reply.vend[j+len]='\0'; |
---|
| 860 | p = &reply.vend[j]; |
---|
| 861 | switch (code) { |
---|
| 862 | case 1: |
---|
| 863 | if (len!=4) |
---|
| 864 | panic("bootpc: subnet mask len is %d",len); |
---|
| 865 | bcopy(&reply.vend[j],&netmask.sin_addr,4); |
---|
| 866 | gotnetmask=1; |
---|
| 867 | printip("Subnet mask",netmask.sin_addr); |
---|
| 868 | break; |
---|
| 869 | case 6: |
---|
| 870 | /* Domain Name servers */ |
---|
| 871 | if (len % 4) |
---|
| 872 | panic("bootpc: DNS Len is %d",len); |
---|
| 873 | { |
---|
| 874 | int dlen = 0; |
---|
| 875 | while ((dlen < len) && |
---|
| 876 | (rtems_bsdnet_nameserver_count < sizeof rtems_bsdnet_config.name_server / |
---|
| 877 | sizeof rtems_bsdnet_config.name_server[0])) { |
---|
| 878 | bcopy(&reply.vend[j+dlen], |
---|
| 879 | &rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count], |
---|
| 880 | 4); |
---|
| 881 | printip("Domain Name Server", |
---|
| 882 | rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count]); |
---|
| 883 | rtems_bsdnet_nameserver_count++; |
---|
| 884 | dlen += 4; |
---|
| 885 | } |
---|
| 886 | } |
---|
| 887 | break; |
---|
| 888 | case 16: /* Swap server IP address. unused */ |
---|
| 889 | case 2: |
---|
| 890 | /* Time offset */ |
---|
| 891 | break; |
---|
| 892 | case 3: |
---|
| 893 | /* Routers */ |
---|
| 894 | if (len % 4) |
---|
| 895 | panic("bootpc: Router Len is %d",len); |
---|
| 896 | if (len > 0) { |
---|
| 897 | bcopy(&reply.vend[j],&gw.sin_addr,4); |
---|
| 898 | printip("Router",gw.sin_addr); |
---|
| 899 | gotgw=1; |
---|
| 900 | } |
---|
| 901 | break; |
---|
| 902 | case 7: |
---|
| 903 | /* Log servers */ |
---|
| 904 | if (len % 4) |
---|
| 905 | panic("bootpc: Log server len is %d",len); |
---|
| 906 | if (len > 0) { |
---|
| 907 | bcopy(&reply.vend[j],&rtems_bsdnet_log_host_address,4); |
---|
| 908 | printip("Log server",rtems_bsdnet_log_host_address); |
---|
| 909 | } |
---|
| 910 | break; |
---|
| 911 | case 12: |
---|
| 912 | if (len>=MAXHOSTNAMELEN) |
---|
| 913 | panic("bootpc: hostname >=%d bytes",MAXHOSTNAMELEN); |
---|
| 914 | if (sethostname (&reply.vend[j], len) < 0) |
---|
| 915 | panic("Can't set host name"); |
---|
| 916 | printf("Hostname is %.*s\n",len,&reply.vend[j]); |
---|
| 917 | break; |
---|
| 918 | case 15: |
---|
| 919 | /* Domain name */ |
---|
| 920 | rtems_bsdnet_domain_name = strdup (&reply.vend[j]); |
---|
| 921 | if (rtems_bsdnet_domain_name) |
---|
| 922 | printf("Domain name is %s\n", rtems_bsdnet_domain_name); |
---|
| 923 | break; |
---|
| 924 | default: |
---|
| 925 | printf("Ignoring field type %d\n",code); |
---|
| 926 | } |
---|
| 927 | j+=len; |
---|
| 928 | } |
---|
| 929 | } |
---|
| 930 | |
---|
| 931 | if (!gotnetmask) { |
---|
| 932 | if (IN_CLASSA(ntohl(myaddr.sin_addr.s_addr))) |
---|
| 933 | netmask.sin_addr.s_addr = htonl(IN_CLASSA_NET); |
---|
| 934 | else if (IN_CLASSB(ntohl(myaddr.sin_addr.s_addr))) |
---|
| 935 | netmask.sin_addr.s_addr = htonl(IN_CLASSB_NET); |
---|
| 936 | else |
---|
| 937 | netmask.sin_addr.s_addr = htonl(IN_CLASSC_NET); |
---|
| 938 | } |
---|
| 939 | if (!gotgw) { |
---|
| 940 | /* Use proxyarp */ |
---|
| 941 | gw.sin_addr.s_addr = myaddr.sin_addr.s_addr; |
---|
| 942 | } |
---|
| 943 | |
---|
| 944 | #if 0 |
---|
| 945 | bootpboot_p_iflist(); |
---|
| 946 | bootpboot_p_rtlist(); |
---|
| 947 | #endif |
---|
| 948 | error = bootpc_adjust_interface(&ireq,so, |
---|
| 949 | &myaddr,&netmask,&gw,procp); |
---|
| 950 | |
---|
| 951 | soclose(so); |
---|
| 952 | |
---|
| 953 | #if 0 |
---|
| 954 | bootpboot_p_iflist(); |
---|
| 955 | bootpboot_p_rtlist(); |
---|
| 956 | #endif |
---|
| 957 | |
---|
| 958 | |
---|
| 959 | #if 0 |
---|
| 960 | myaddr.sin_addr.s_addr | ~ netmask.sin_addr.s_addr; |
---|
| 961 | #endif |
---|
| 962 | |
---|
| 963 | #if 0 |
---|
| 964 | bootpboot_p_iflist(); |
---|
| 965 | bootpboot_p_rtlist(); |
---|
| 966 | #endif |
---|
| 967 | return; |
---|
| 968 | } |
---|