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Posting-Version: version B 2.10.1 6/24/83 (MC840302); site ttds.UUCP
Path: utzoo!linus!philabs!cmcl2!seismo!mcvax!enea!ttds!johanw
From: johanw@ttds.UUCP (Johan Wide'n)
Newsgroups: net.bugs.2bsd
Subject: Re: Inexplicable 2.9BSD crashes (more info)
Message-ID: <965@ttds.UUCP>
Date: Fri, 31-May-85 13:10:45 EDT
Article-I.D.: ttds.965
Posted: Fri May 31 13:10:45 1985
Date-Received: Sun, 2-Jun-85 20:15:52 EDT
References: <1154@uwmacc.UUCP>
Reply-To: johanw@ttds.UUCP (Johan Wide'n)
Distribution: net
Organization: The Royal Inst. of Techn., Stockholm
Lines: 93

One thing too watch out for is a bad /etc/init. /etc/init as delivered
to us did not reset several signals before execing other programs.

This bug was pointed out by (ihnp4!inuxc!isrnix!greg)

>Received: by isrnix.UUCP; Wed, 13 Jun 84 18:03:38 EST
>To: BERKELEY!2bsd-people
>Subject: 2.9 problem
>
>
>   I'm having a problem with 2.9 - I am getting spurious signals sent
>to all the processes - the signal is signal 9 (I'm almost sure) and
>init (proc 1) does not get it (although everything else does).  Has
>anyone else seen this?  I have VFORK and MENLO_JCL turned on f.y.i.
>Any ideas?
---------------
>Received: by isrnix.UUCP; Thu, 14 Jun 84 18:11:15 EST
>To: BERKELEY!2bsd-people
>Subject: My earlier message about interrupts.
>
>
>  Found the culprit -
>
> There is a bug in our distributed version of init.c.  In dofork and
>runcom you should add the signal calls
>
>                signal(SIGINT, DIG_DFL);
>                        and
>                signal(SIGTERM, SIG_DFL);
>
>Greg

So: check out your /usr/src/cmd/init.c.
Here is a context diff:
*** init.c.org	Wed May 18 20:54:04 1983
--- init.c	Fri Apr 26 16:13:28 1985
***************
*** 201,206
  
  	pid = fork();
  	if(pid == 0) {
  		open("/", 0);
  		dup(0);
  		dup(0);

--- 201,208 -----
  
  	pid = fork();
  	if(pid == 0) {
+ 		signal(SIGTERM, SIG_DFL);
+ 		signal(SIGINT, SIG_DFL);
  		open("/", 0);
  		dup(0);
  		dup(0);
***************
*** 205,210
  		dup(0);
  		dup(0);
  #ifdef	UCB_AUTOBOOT
  		if ((howto & RB_SINGLE) || (howto & RB_NOFSCK))
  			arg1 = "fastboot";
  		else

--- 207,213 -----
  		dup(0);
  		dup(0);
  #ifdef	UCB_AUTOBOOT
+ 		signal(SIGQUIT, SIG_DFL);
  		if ((howto & RB_SINGLE) || (howto & RB_NOFSCK))
  			arg1 = "fastboot";
  		else
***************
*** 413,418
  	pid = fork();
  	if(pid == 0) {
  		signal(SIGTERM, SIG_DFL);
  		signal(SIGHUP, SIG_IGN);
  		strcpy(tty, dev);
  		strncat(tty, p->line, LINSIZ);

--- 416,425 -----
  	pid = fork();
  	if(pid == 0) {
  		signal(SIGTERM, SIG_DFL);
+ 		signal(SIGINT, SIG_DFL);
+ #ifdef	UCB_AUTOBOOT
+ 		signal(SIGQUIT, SIG_DFL);
+ #endif
  		signal(SIGHUP, SIG_IGN);
  		strcpy(tty, dev);
  		strncat(tty, p->line, LINSIZ);

	johanw@ttds             Johan Widen