BSD 4_3_Net_1 release

[unix-history] / slattach / slattach.c

/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Adams.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1988 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)slattach.c  4.3 (Berkeley) 6/30/88";
#endif /* not lint */

#include <stdio.h>
#include <sys/param.h>
#include <sgtty.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#include <netdb.h>
#include <fcntl.h>

#define DEFAULT_BAUD    9600
int     slipdisc = SLIPDISC;

char    devname[32];
char    hostname[MAXHOSTNAMELEN];

main(argc, argv)
       int argc;
       char *argv[];
{
       register int fd;
       register char *dev = argv[1];
       struct sgttyb sgtty;
       int     speed;

       if (argc < 2 || argc > 3) {
               fprintf(stderr, "usage: %s ttyname [baudrate]\n", argv[0]);
               exit(1);
       }
       speed = argc == 3 ? findspeed(atoi(argv[2])) : findspeed(DEFAULT_BAUD);
       if (speed == 0) {
               fprintf(stderr, "unknown speed %s", argv[2]);
               exit(1);
       }
       if (strncmp("/dev/", dev, 5)) {
               (void)sprintf(devname, "/dev/%s", dev);
               dev = devname;
       }
       if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0) {
               perror(dev);
               exit(1);
       }
       sgtty.sg_flags = RAW | ANYP;
       sgtty.sg_ispeed = sgtty.sg_ospeed = speed;
       if (ioctl(fd, TIOCSETP, &sgtty) < 0) {
               perror("ioctl(TIOCSETP)");
               exit(1);
       }
       if (ioctl(fd, TIOCSETD, &slipdisc) < 0) {
               perror("ioctl(TIOCSETD)");
               exit(1);
       }

       if (fork() > 0)
               exit(0);
       for (;;)
               sigpause(0L);
}

struct sg_spds {
       int sp_val, sp_name;
}       spds[] = {
#ifdef B50
       { 50, B50 },
#endif
#ifdef B75
       { 75, B75 },
#endif
#ifdef B110
       { 110, B110 },
#endif
#ifdef B150
       { 150, B150 },
#endif
#ifdef B200
       { 200, B200 },
#endif
#ifdef B300
       { 300, B300 },
#endif
#ifdef B600
       { 600, B600 },
#endif
#ifdef B1200
       { 1200, B1200 },
#endif
#ifdef B1800
       { 1800, B1800 },
#endif
#ifdef B2000
       { 2000, B2000 },
#endif
#ifdef B2400
       { 2400, B2400 },
#endif
#ifdef B3600
       { 3600, B3600 },
#endif
#ifdef B4800
       { 4800, B4800 },
#endif
#ifdef B7200
       { 7200, B7200 },
#endif
#ifdef B9600
       { 9600, B9600 },
#endif
#ifdef EXTA
       { 19200, EXTA },
#endif
#ifdef EXTB
       { 38400, EXTB },
#endif
       { 0, 0 }
};

findspeed(speed)
       register int speed;
{
       register struct sg_spds *sp;

       sp = spds;
       while (sp->sp_val && sp->sp_val != speed)
               sp++;
       return (sp->sp_name);
}