exec.h revision 151810 
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 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 *	@(#)exec.h	8.3 (Berkeley) 6/8/95
33 * $FreeBSD: head/bin/sh/exec.h 151810 2005-10-28 18:37:09Z stefanf $
34 */
35
36/* values of cmdtype */
37#define CMDUNKNOWN -1		/* no entry in table for command */
38#define CMDNORMAL 0		/* command is an executable program */
39#define CMDBUILTIN 1		/* command is a shell builtin */
40#define CMDFUNCTION 2		/* command is a shell function */
41
42/* values for typecmd_impl's third parameter */
43enum {
44	TYPECMD_SMALLV,		/* command -v */
45	TYPECMD_BIGV,		/* command -V */
46	TYPECMD_TYPE		/* type */
47};
48
49struct cmdentry {
50	int cmdtype;
51	union param {
52		int index;
53		union node *func;
54	} u;
55};
56
57
58extern char *pathopt;		/* set by padvance */
59extern int exerrno;		/* last exec error */
60
61void shellexec(char **, char **, char *, int);
62char *padvance(char **, char *);
63int hashcmd(int, char **);
64void find_command(char *, struct cmdentry *, int, char *);
65int find_builtin(char *);
66void hashcd(void);
67void changepath(const char *);
68void deletefuncs(void);
69void addcmdentry(char *, struct cmdentry *);
70void defun(char *, union node *);
71int unsetfunc(char *);
72int typecmd_impl(int, char **, int);
73int typecmd(int, char **);
74void clearcmdentry(int);
75