2.9BSD/usr/src/ucb/Mail/sigretro.h

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#

/*
 * Define extra stuff not found in signal.h
 * Sccs id @(#)sigretro.h	1.2	3/22/82
 */

#ifndef SIGRETRO

#define	SIGRETRO				/* Can use this for cond code */

#ifndef SIG_HOLD

#define	SIG_HOLD	(int (*)()) 3		/* Phony action to hold sig */
#define	BADSIG		(int (*)()) -1		/* Return value on error */

#endif SIG_HOLD

#endif SIGRETRO