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      1 /*	$NetBSD: options.h,v 1.28 2024/07/12 07:30:30 kre Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1991, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Kenneth Almquist.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)options.h	8.2 (Berkeley) 5/4/95
     35  */
     36 
     37 struct shparam {
     38 	int nparam;		/* # of positional parameters (without $0) */
     39 	unsigned char malloc;	/* if parameter list dynamically allocated */
     40 	unsigned char reset;	/* if getopts has been reset */
     41 	char **p;		/* parameter list */
     42 	char **optnext;		/* next parameter to be processed by getopts */
     43 	char *optptr;		/* used by getopts */
     44 };
     45 
     46 /*
     47  * Note that option default values can be changed at shell startup
     48  * depending upon the environment in which the shell is running.
     49  */
     50 struct optent {
     51 	const char *name;		/* for set -o <name> */
     52 	const char letter;		/* set [+/-]<letter> and $- */
     53 	const char opt_set;		/* mutually exclusive option set */
     54 	unsigned char val;		/* value of <letter>flag */
     55 	unsigned char dflt;		/* default value of flag */
     56 };
     57 
     58 #include "optinit.h"
     59 
     60 extern char *minusc;		/* argument to -c option */
     61 extern char *arg0;		/* $0 */
     62 extern struct shparam shellparam;  /* $@ */
     63 extern char **argptr;		/* argument list for builtin commands */
     64 extern char *optionarg;		/* set by nextopt */
     65 extern char *optptr;		/* used by nextopt */
     66 
     67 void procargs(int, char **);
     68 void optschanged(void);
     69 void setparam(char **);
     70 void freeparam(volatile struct shparam *);
     71 int nextopt(const char *);
     72 void getoptsreset(char *, int);
     73