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/*-
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)exec.h	8.3 (Berkeley) 6/8/95
 * $FreeBSD: release/9.1.0/bin/sh/exec.h 231790 2012-02-15 22:45:57Z jilles $
 */

/* values of cmdtype */
#define CMDUNKNOWN -1		/* no entry in table for command */
#define CMDNORMAL 0		/* command is an executable program */
#define CMDBUILTIN 1		/* command is a shell builtin */
#define CMDFUNCTION 2		/* command is a shell function */

/* values for typecmd_impl's third parameter */
enum {
	TYPECMD_SMALLV,		/* command -v */
	TYPECMD_BIGV,		/* command -V */
	TYPECMD_TYPE		/* type */
};

union node;
struct cmdentry {
	int cmdtype;
	union param {
		int index;
		struct funcdef *func;
	} u;
	int special;
};


/* action to find_command() */
#define DO_ERR		0x01	/* prints errors */
#define DO_NOFUNC	0x02	/* don't return shell functions, for command */

extern const char *pathopt;	/* set by padvance */
extern int exerrno;		/* last exec error */

void shellexec(char **, char **, const char *, int) __dead2;
char *padvance(const char **, const char *);
void find_command(const char *, struct cmdentry *, int, const char *);
int find_builtin(const char *, int *);
void hashcd(void);
void changepath(const char *);
void defun(const char *, union node *);
int unsetfunc(const char *);
int typecmd_impl(int, char **, int, const char *);
void clearcmdentry(void);

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