usr/src/usr.bin/mail/sigretro.h

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and that due credit is given
 * to the University of California at Berkeley. The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific prior written permission. This software
 * is provided ``as is'' without express or implied warranty.
 *
 *      @(#)sigretro.h  5.2 (Berkeley) %G%
 */

/*
 * Define extra stuff not found in signal.h
 */

#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