Index: kern/kern_sig.c
===================================================================
RCS file: /home/dcvs/src/sys/kern/kern_sig.c,v
retrieving revision 1.20
diff -r1.20 kern_sig.c
138a139,140
> #define SA_CKPT         0x80            /* checkpoint process */
> 
171a174,207
> 	SA_IGNORE,              /* SIGTHR */
> 	SA_CKPT,                /* SIGCKPT */ 
> 	SA_KILL|SA_CKPT,        /* SIGCKPTEXIT */  
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 	SA_IGNORE,
> 
885a922,936
> /*
>  * temporary hack to allow checkpoint code to continue to
>  * be in a module for the moment
>  */
> typedef void (proc_func) (struct proc *);
> static proc_func *ckpt_func = NULL;
> proc_func *register_ckpt_func(proc_func *); 
> 
> proc_func *register_ckpt_func(proc_func *cf) 
> {
> 	proc_func *cftmp = ckpt_func;
> 	ckpt_func = cf;
> 	return cftmp;
> }
> 
935a987
> 	
949a1002,1009
> 
> 	if (prop & SA_CKPT && action == SIG_DFL) {
> 		SIGDELSET(p->p_siglist, sig);		
> 		if (ckpt_func) 
> 			ckpt_func(p);
> 		if (prop & SA_KILL) 
> 			SIGADDSET(p->p_siglist, SIGKILL);		
> 	}
Index: sys/signal.h
===================================================================
RCS file: /home/dcvs/src/sys/sys/signal.h,v
retrieving revision 1.3
diff -r1.3 signal.h
105a106,110
> #if __BSD_VISIBLE
> #define SIGTHR          32      /* Thread interrupt (FreeBSD-5 reserved) */
> #define SIGCKPT         33      /* checkpoint and continue */
> #define SIGCKPTEXIT     34      /* checkpoint and exit */
> #endif
217c222
< #define NSIG		32	/* number of old signals (counting 0) */
---
> #define NSIG		64	/* size of sigptbl */