patch to sereverloop.c

[William L. Jones]

This is a repost of a patch that I submitted earlier.  It is in unified
diff format this time.  If move the reinstallation of the SIGCHLD 
signal handler from isgchld_handler2 back in the server2 loop.   

AIX and IRIX both will keep calling the  sigchld_handler2 open the return
from sigchld_handler2 if the SIGCHLD signal is reinstalled in 
sigchld_handler2 since both os expact that all children will be reaped   
in the SIGCHLD signal handler.   The causes a infinite loop were the sigchld_handler2 is called until openssh runs out of stack space a core 
dumps on logout when the ssh version 2 protocol is used.

Bill Jones


-------------- next part --------------
--- serverloop.c.orig	Thu Feb  1 14:56:30 2001 +++ serverloop.c	Thu Feb  1 14:57:31 2001 @@ -110,7 +110,6 @@  	int save_errno = errno;  	debug("Received SIGCHLD.");  	child_terminated = 1; -	signal(SIGCHLD, sigchld_handler2);  	errno = save_errno;  }   @@ -664,6 +663,7 @@  			while ((pid = waitpid(-1, &status, WNOHANG)) > 0)  				session_close_by_pid(pid, status);  			child_terminated = 0; +			signal(SIGCHLD, sigchld_handler2);  		}  		channel_after_select(readset, writeset);  		process_input(readset);