Home | History | Annotate | Line # | Download | only in rbootd 
      1 /*	$NetBSD: defs.h,v 1.13 2025/04/29 15:57:35 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988, 1992 The University of Utah and the Center
      5  *	for Software Science (CSS).
      6  * Copyright (c) 1992, 1993
      7  *	The Regents of the University of California.  All rights reserved.
      8  *
      9  * This code is derived from software contributed to Berkeley by
     10  * the Center for Software Science of the University of Utah Computer
     11  * Science Department.  CSS requests users of this software to return
     12  * to css-dist (at) cs.utah.edu any improvements that they make and grant
     13  * CSS redistribution rights.
     14  *
     15  * Redistribution and use in source and binary forms, with or without
     16  * modification, are permitted provided that the following conditions
     17  * are met:
     18  * 1. Redistributions of source code must retain the above copyright
     19  *    notice, this list of conditions and the following disclaimer.
     20  * 2. Redistributions in binary form must reproduce the above copyright
     21  *    notice, this list of conditions and the following disclaimer in the
     22  *    documentation and/or other materials provided with the distribution.
     23  * 3. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  *	from: @(#)defs.h	8.1 (Berkeley) 6/4/93
     40  *
     41  * From: Utah Hdr: defs.h 3.1 92/07/06
     42  * Author: Jeff Forys, University of Utah CSS
     43  */
     44 
     45 #include "rmp.h"
     46 #include "rmp_var.h"
     47 
     48 /*
     49 **  Common #define's and external variables.  All other files should
     50 **  include this.
     51 */
     52 
     53 /*
     54  *  This may be defined in <sys/param.h>, if not, it's defined here.
     55  */
     56 #ifndef	MAXHOSTNAMELEN
     57 #define	MAXHOSTNAMELEN 64
     58 #endif
     59 
     60 /*
     61  *  SIGUSR1 and SIGUSR2 are defined in <signal.h> for 4.3BSD systems.
     62  */
     63 #ifndef SIGUSR1
     64 #define	SIGUSR1 SIGEMT
     65 #endif
     66 #ifndef SIGUSR2
     67 #define	SIGUSR2 SIGFPE
     68 #endif
     69 
     70 /*
     71  *  These can be faster & more efficient than strcmp()/strncmp()...
     72  */
     73 #define	STREQN(s1,s2)		((*s1 == *s2) && (strcmp(s1,s2) == 0))
     74 #define	STRNEQN(s1,s2,n)	((*s1 == *s2) && (strncmp(s1,s2,n) == 0))
     75 
     76 /*
     77  *  Configuration file limitations.
     78  */
     79 #define	C_MAXFILE	16		/* max number of boot-able files */
     80 #define	C_LINELEN	1024		/* max length of line */
     81 
     82 /*
     83  *  Direction of packet (used as argument to DispPkt).
     84  */
     85 #define	DIR_RCVD	0
     86 #define	DIR_SENT	1
     87 #define	DIR_NONE	2
     88 
     89 /*
     90  *  These need not be functions, so...
     91  */
     92 #define	FreeStr(str)	free(str)
     93 #define	FreeClient(cli)	free(cli)
     94 #define	GenSessID()	(++SessionID ? SessionID: ++SessionID)
     95 
     96 /*
     97  *  Converting an Ethernet address to a string is done in many routines.
     98  *  Using `rmp.hp_hdr.saddr' works because this field is *never* changed;
     99  *  it will *always* contain the source address of the packet.
    100  */
    101 #define	EnetStr(rptr)	GetEtherAddr(&(rptr)->rmp.hp_hdr.saddr[0])
    102 
    103 /*
    104  *  Every machine we can boot will have one of these allocated for it
    105  *  (unless there are no restrictions on who we can boot).
    106  */
    107 typedef struct client_s {
    108 	u_int8_t		addr[RMP_ADDRLEN];	/* addr of machine */
    109 	char			*files[C_MAXFILE];	/* boot-able files */
    110 	struct client_s		*next;			/* ptr to next */
    111 } CLIENT;
    112 
    113 /*
    114  *  Every active connection has one of these allocated for it.
    115  */
    116 typedef struct rmpconn_s {
    117 	struct rmp_packet	rmp;			/* RMP packet */
    118 	int			rmplen;			/* length of packet */
    119 	struct timeval		tstamp;			/* last time active */
    120 	int			bootfd;			/* open boot file */
    121 	struct rmpconn_s	*next;			/* ptr to next */
    122 } RMPCONN;
    123 
    124 /*
    125  *  All these variables are defined in "conf.c".
    126  */
    127 extern	char	MyHost[MAXHOSTNAMELEN+1]; /* this hosts' name */
    128 extern	int	DebugFlg;		/* set true if debugging */
    129 extern	int	BootAny;		/* set true if we can boot anyone */
    130 
    131 extern	const char *ConfigFile;		/* configuration file */
    132 extern	const char *DfltConfig;		/* default configuration file */
    133 extern	const char *DbgFile;		/* debug output file */
    134 extern	const char *PidFile;		/* file containing pid of server */
    135 extern	const char *BootDir;		/* directory w/boot files */
    136 
    137 extern	FILE	*DbgFp;			/* debug file pointer */
    138 extern	char	*IntfName;		/* interface we are attached to */
    139 
    140 extern	u_int16_t SessionID;		/* generated session ID */
    141 
    142 extern	char	*BootFiles[];		/* list of boot files */
    143 
    144 extern	CLIENT	*Clients;		/* list of addrs we'll accept */
    145 extern	RMPCONN	*RmpConns;		/* list of active connections */
    146 
    147 extern	u_int8_t RmpMcastAddr[];	/* RMP multicast address */
    148 
    149 void	 AddConn(RMPCONN *);
    150 int	 BootDone(RMPCONN *);
    151 void	 BpfClose(void);
    152 char	*BpfGetIntfName(char **);
    153 int	 BpfOpen(void);
    154 int	 BpfRead(RMPCONN *, int);
    155 int	 BpfWrite(RMPCONN *);
    156 void	 DebugOff(int);
    157 void	 DebugOn(int);
    158 void	 DispPkt(RMPCONN *, int);
    159 void	 DoTimeout(void);
    160 void	 DspFlnm(u_int, char *);
    161 void	 Exit(int) __dead;
    162 CLIENT	*FindClient(RMPCONN *);
    163 RMPCONN	*FindConn(RMPCONN *);
    164 void	 FreeClients(void);
    165 void	 FreeConn(RMPCONN *);
    166 void	 FreeConns(void);
    167 int	 GetBootFiles(void);
    168 char	*GetEtherAddr(u_int8_t *);
    169 CLIENT	*NewClient(u_int8_t *);
    170 RMPCONN	*NewConn(RMPCONN *);
    171 char	*NewStr(char *);
    172 u_int8_t *ParseAddr(char *);
    173 int	 ParseConfig(void);
    174 void	 ProcessPacket(RMPCONN *, CLIENT *);
    175 void	 ReConfig(int);
    176 void	 RemoveConn(RMPCONN *);
    177 int	 SendBootRepl(struct rmp_packet *, RMPCONN *, char *[]);
    178 int	 SendFileNo(struct rmp_packet *, RMPCONN *, char *[]);
    179 int	 SendPacket(RMPCONN *);
    180 int	 SendReadRepl(RMPCONN *);
    181 int	 SendServerID(RMPCONN *);
    182