Script started on Tue Oct  1 17:51:56 1996
culebra.uccs.edu> DEC   g dbx DEC/pens
dbx version 3.0.1
Type 'help' for help.

main:  46  int option_exist = 0;
(dbx) r chico 381 318
socket has port #2925
signal Segmentation fault at   [strcpy:110 ,0x403104]	 Source not available
(dbx) where
>  0 strcpy(0xb6d, 0x7fffade4, 0x0, 0x0, 0x0) ["../strcpy.s":110, 0x403104]
   1 main(argc = 3, argv = 0x7fffb684) ["pens.c":129, 0x400a44]
(dbx) l
	 Source not available
(dbx) f 1
main: 129  strcpy(pen.header.sender, getlogin());
(dbx) l
   126  	to.sin_port = htons(toPort_no);
   127  
   128  	/* set pen message field */
>  129  	strcpy(pen.header.sender, getlogin());
   130  	pen.header.sessionID = 1;
   131  	pen.msg_type = 3;
   132  	pen.size = 8;
   133  	pen.x = 2;
   134  	pen.y = 32;
   135  	/*send pen message */
   136  	printf("sizeof(pen)=%d\n", sizeof(pen));
   137  	printf("send pen message:\n\t pen.header.sender = %s\n", pen.header.sender);
(dbx) p get     p getlogin()

DBX Fault: Segmentation fault
Registers on entry:
r0/zero: 0x00000000	r1/at: 0x00000000	r2/v0: 0x00000004	
r3/v1: 0x10028ca0	r4/a0: 0x00000004	r5/a1: 0x0000012d	
r6/a2: 0x0000012d	r7/a3: 0x1008e380	r8/t0: 0x10028c9f	
r9/t1: 0x10028c9c	r10/t2: 0x1002dab8	r11/t3: 0x00000000	
r12/t4: 0x0000012d	r13/t5: 0x00000e1c	r14/t6: 0x1002dab8	
r15/t7: 0x00000001	r16/s0: 0x1008e380	r17/s1: 0x00000002	
r18/s2: 0x00000000	r19/s3: 0x00000035	r20/s4: 0x100320f8	
r21/s5: 0x1000036c	r22/s6: 0x7fffb0d4	r23/s7: 0x00000000	
r24/t8: 0x10028c9c	r25/t9: 0x10028c9c	r26/k0: 0x3d43493a	
r27/k1: 0x255b455c	r28/gp: 0x1001d1c0	r29/sp: 0x7fffa8e0	
r30/s8: 0x00000000	r31/ra: 0x00426fb0	
cannot read in dbx
(dbx) : quit
culebra.uccs.edu> vi ustr.c   s.c
[?1h"usts.c" 87/1703 /* sender for unix domain stream demo */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>

help_msg()
{
   printf("format: usts -[d] unix_sock_path_name_of_server\n");
    printf("		option: d set debug mode\n");
}

main(argc, argv)
int argc;
char *argv[];
{
   int sock;
    struct sockaddr_un to;
    struct sockaddr_un addr;
    int n;
    char toBuf[1024];
    char fromBuf[1024];"usts.c" 87/1703








   
    char toBuf[1024];char fromBuf[1024];
    extern char *optarg;
    extern int	 optind;
    int option_exist = 0;
    int c;
    int debug = 0;
    int length;
    int flag;
    int i;/* process command line args */
    while ((c=getopt(argc,argv,"dn:")) != EOF)
    {
	option_exist = 1;
	switch(c)
	{
case 'd':
debug = 1;if (debug)
		printf("turn on debug mode.\n");break;	    break;

	case '?':
help_msg();exit (1);
	default:
fprintf (stderr, "unrecognized arg >%s<\n", optarg);help_msg();exit (1);
	}
}

to.sun_family = AF_UNIX;
    strcpy(to.sun_path, argv[optind++]);
    printf("The receiver's sun_path is %s\n", to.sun_path);/* create socket from which to read */
    sock = socket(AF_UNIX, SOCK_STREAM, 0);
    if (sock < 0) {
	perror("opening stream socket");
	exit(1);
    }:q
[?1lculebra.uccs.edu> ls
DEC/		hw#1		inetstr.c*	penr.c		testfile
Makefile*	idgr.c		inetstr5.c*	pens.c*		typescript
README		idgr2.c		inetsts.c*	pens5.c*	ua.c*
SPARC/		idgr3.c		inetsts5.c*	phase2r.c	udgr.c
SUN3/		idgs.c*		istr.c*		phase2s.c*	udgr3.c
abreceiver.c	idgs2.c		istr5.c*	realtime.c	udgs.c*
absender.c	idgs3.c		ists.c*		rstr.c*		udgs3.c*
channel.c	idgs3s.c	ists5.c*	rsts.c*		ustr.c
ex2r.c		idgs5.c*	old/		sdgr.c		usts.c*
ex2s.c*		inets*		out		sdgs.c*		utility/
culebra.uccs.edu> CD c  cd DEC
culebra.uccs.edu> ls
core		idgs*		ists*		rstr*		udgs3*
ex2r*		idgs2*		newidgr*	rsts*		ustr*
ex2s*		idgs3*		newidgs*	typescript	usts*
idgr*		inetstr*	penr*		udgr*
idgr2*		inetsts*	pens*		udgr3*
idgr3*		istr*		realtime*	udgs*
culebra.uccs.edu> ustr    cd ..
culebra.uccs.edu> logout
Not login shell.
culebra.uccs.edu> exit

script done on Tue Oct  1 18:01:58 1996