exec.h revision 1556 
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	8.1 (Berkeley) 5/31/93
37 */
38
39/* values of cmdtype */
40#define CMDUNKNOWN -1		/* no entry in table for command */
41#define CMDNORMAL 0		/* command is an executable program */
42#define CMDBUILTIN 1		/* command is a shell builtin */
43#define CMDFUNCTION 2		/* command is a shell function */
44
45
46struct cmdentry {
47	int cmdtype;
48	union param {
49		int index;
50		union node *func;
51	} u;
52};
53
54
55extern char *pathopt;		/* set by padvance */
56
57#ifdef __STDC__
58void shellexec(char **, char **, char *, int);
59char *padvance(char **, char *);
60void find_command(char *, struct cmdentry *, int);
61int find_builtin(char *);
62void hashcd(void);
63void changepath(char *);
64void defun(char *, union node *);
65int unsetfunc(char *);
66#else
67void shellexec();
68char *padvance();
69void find_command();
70int find_builtin();
71void hashcd();
72void changepath();
73void defun();
74int unsetfunc();
75#endif
76