1 /* 2 * Copyright (c) 1988, 1992 The University of Utah and the Center 3 * for Software Science (CSS). 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Center for Software Science of the University of Utah Computer 9 * Science Department. CSS requests users of this software to return 10 * to css-dist@cs.utah.edu any improvements that they make and grant 11 * CSS redistribution rights. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)defs.h 8.1 (Berkeley) 6/4/93 42 * 43 * Utah $Hdr: defs.h 3.1 92/07/06$ 44 * Author: Jeff Forys, University of Utah CSS 45 */ 46 47 #include "rmp.h" 48 #include "rmp_var.h" 49 50 /* 51 ** Common #define's and external variables. All other files should 52 ** include this. 53 */ 54 55 /* 56 * This may be defined in <sys/param.h>, if not, it's defined here. 57 */ 58 #ifndef MAXHOSTNAMELEN 59 #define MAXHOSTNAMELEN 64 60 #endif 61 62 /* 63 * SIGUSR1 and SIGUSR2 are defined in <signal.h> for 4.3BSD systems. 64 */ 65 #ifndef SIGUSR1 66 #define SIGUSR1 SIGEMT 67 #endif 68 #ifndef SIGUSR2 69 #define SIGUSR2 SIGFPE 70 #endif 71 72 /* 73 * These can be faster & more efficient than strcmp()/strncmp()... 74 */ 75 #define STREQN(s1,s2) ((*s1 == *s2) && (strcmp(s1,s2) == 0)) 76 #define STRNEQN(s1,s2,n) ((*s1 == *s2) && (strncmp(s1,s2,n) == 0)) 77 78 /* 79 * Configuration file limitations. 80 */ 81 #define C_MAXFILE 10 /* max number of boot-able files */ 82 #define C_LINELEN 1024 /* max length of line */ 83 84 /* 85 * Direction of packet (used as argument to DispPkt). 86 */ 87 #define DIR_RCVD 0 88 #define DIR_SENT 1 89 #define DIR_NONE 2 90 91 /* 92 * These need not be functions, so... 93 */ 94 #define FreeStr(str) free(str) 95 #define FreeClient(cli) free(cli) 96 #define GenSessID() (++SessionID ? SessionID: ++SessionID) 97 98 /* 99 * Converting an Ethernet address to a string is done in many routines. 100 * Using `rmp.hp_hdr.saddr' works because this field is *never* changed; 101 * it will *always* contain the source address of the packet. 102 */ 103 #define EnetStr(rptr) GetEtherAddr(&(rptr)->rmp.hp_hdr.saddr[0]) 104 105 /* 106 * Every machine we can boot will have one of these allocated for it 107 * (unless there are no restrictions on who we can boot). 108 */ 109 typedef struct client_s { 110 u_char addr[RMP_ADDRLEN]; /* addr of machine */ 111 char *files[C_MAXFILE]; /* boot-able files */ 112 struct client_s *next; /* ptr to next */ 113 } CLIENT; 114 115 /* 116 * Every active connection has one of these allocated for it. 117 */ 118 typedef struct rmpconn_s { 119 struct rmp_packet rmp; /* RMP packet */ 120 int rmplen; /* length of packet */ 121 struct timeval tstamp; /* last time active */ 122 int bootfd; /* open boot file */ 123 struct rmpconn_s *next; /* ptr to next */ 124 } RMPCONN; 125 126 /* 127 * All these variables are defined in "conf.c". 128 */ 129 extern char *ProgName; /* path-stripped argv[0] */ 130 extern char MyHost[]; /* this hosts' name */ 131 extern int MyPid; /* this processes' ID */ 132 extern int DebugFlg; /* set true if debugging */ 133 extern int BootAny; /* set true if we can boot anyone */ 134 135 extern char *ConfigFile; /* configuration file */ 136 extern char *DfltConfig; /* default configuration file */ 137 extern char *DbgFile; /* debug output file */ 138 extern char *PidFile; /* file containing pid of server */ 139 extern char *BootDir; /* directory w/boot files */ 140 141 extern FILE *DbgFp; /* debug file pointer */ 142 extern char *IntfName; /* interface we are attached to */ 143 144 extern u_short SessionID; /* generated session ID */ 145 146 extern char *BootFiles[]; /* list of boot files */ 147 148 extern CLIENT *Clients; /* list of addrs we'll accept */ 149 extern RMPCONN *RmpConns; /* list of active connections */ 150 151 extern char RmpMcastAddr[]; /* RMP multicast address */ 152 153 void AddConn __P((RMPCONN *)); 154 int BootDone __P((RMPCONN *)); 155 void BpfClose __P((void)); 156 char *BpfGetIntfName __P((char **)); 157 int BpfOpen __P((void)); 158 int BpfRead __P((RMPCONN *, int)); 159 int BpfWrite __P((RMPCONN *)); 160 void DebugOff __P((int)); 161 void DebugOn __P((int)); 162 void DispPkt __P((RMPCONN *, int)); 163 void DoTimeout __P((void)); 164 void DspFlnm __P((u_int, char *)); 165 void Exit __P((int)); 166 CLIENT *FindClient __P((RMPCONN *)); 167 RMPCONN *FindConn __P((RMPCONN *)); 168 void FreeClients __P((void)); 169 void FreeConn __P((RMPCONN *)); 170 void FreeConns __P((void)); 171 int GetBootFiles __P((void)); 172 char *GetEtherAddr __P((u_char *)); 173 CLIENT *NewClient __P((u_char *)); 174 RMPCONN *NewConn __P((RMPCONN *)); 175 char *NewStr __P((char *)); 176 u_char *ParseAddr __P((char *)); 177 int ParseConfig __P((void)); 178 void ProcessPacket __P((RMPCONN *, CLIENT *)); 179 void ReConfig __P((int)); 180 void RemoveConn __P((RMPCONN *)); 181 int SendBootRepl __P((struct rmp_packet *, RMPCONN *, char *[])); 182 int SendFileNo __P((struct rmp_packet *, RMPCONN *, char *[])); 183 int SendPacket __P((RMPCONN *)); 184 int SendReadRepl __P((RMPCONN *)); 185 int SendServerID __P((RMPCONN *)); 186