exec.h revision 17987 
1/*-
2 * Copyright (c) 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *	@(#)exec.h	8.3 (Berkeley) 6/8/95
37 *	$Id: exec.h,v 1.2 1994/09/24 02:57:33 davidg Exp $
38 */
39
40/* values of cmdtype */
41#define CMDUNKNOWN -1		/* no entry in table for command */
42#define CMDNORMAL 0		/* command is an executable program */
43#define CMDBUILTIN 1		/* command is a shell builtin */
44#define CMDFUNCTION 2		/* command is a shell function */
45
46
47struct cmdentry {
48	int cmdtype;
49	union param {
50		int index;
51		union node *func;
52	} u;
53};
54
55
56extern char *pathopt;		/* set by padvance */
57
58void shellexec __P((char **, char **, char *, int));
59char *padvance __P((char **, char *));
60int hashcmd __P((int, char **));
61void find_command __P((char *, struct cmdentry *, int, char *));
62int find_builtin __P((char *));
63void hashcd __P((void));
64void changepath __P((char *));
65void deletefuncs __P((void));
66void getcmdentry __P((char *, struct cmdentry *));
67void addcmdentry __P((char *, struct cmdentry *));
68void defun __P((char *, union node *));
69int unsetfunc __P((char *));
70