1/* $NetBSD: exec.h,v 1.21 2003/08/07 09:05:31 agc 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 * @(#)exec.h 8.3 (Berkeley) 6/8/95 35 */ 36 37/* values of cmdtype */ 38#define CMDUNKNOWN -1 /* no entry in table for command */ 39#define CMDNORMAL 0 /* command is an executable program */ 40#define CMDFUNCTION 1 /* command is a shell function */ 41#define CMDBUILTIN 2 /* command is a shell builtin */ 42#define CMDSPLBLTIN 3 /* command is a special shell builtin */ 43 44 45struct cmdentry { 46 int cmdtype; 47 union param { 48 int index; 49 int (*bltin)(int, char**); 50 union node *func; 51 } u; 52}; 53 54 55/* action to find_command() */ 56#define DO_ERR 0x01 /* prints errors */ 57#define DO_ABS 0x02 /* checks absolute paths */ 58#define DO_NOFUNC 0x04 /* don't return shell functions, for command */ 59#define DO_ALTPATH 0x08 /* using alternate path */ 60#define DO_ALTBLTIN 0x20 /* %builtin in alt. path */ 61 62extern const char *pathopt; /* set by padvance */ 63 64void shellexec(char **, char **, const char *, int, int) 65 __attribute__((__noreturn__)); 66char *padvance(const char **, const char *); 67int hashcmd(int, char **); 68void find_command(char *, struct cmdentry *, int, const char *); 69int (*find_builtin(char *))(int, char **); 70int (*find_splbltin(char *))(int, char **); 71void hashcd(void); 72void changepath(const char *); 73void deletefuncs(void); 74void getcmdentry(char *, struct cmdentry *); 75void addcmdentry(char *, struct cmdentry *); 76void defun(char *, union node *); 77int unsetfunc(char *); 78int typecmd(int, char **); 79void hash_special_builtins(void); 80