1 /* $NetBSD: exec.h,v 1.27 2018/06/22 11:04:55 kre 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 45 struct cmdentry { 46 short cmdtype; 47 short lno_frel; /* for functions: Line numbers count from 1 */ 48 int lineno; /* for functions: Abs line number of defn */ 49 union param { 50 int index; 51 int (*bltin)(int, char**); 52 struct funcdef *func; 53 } u; 54 }; 55 56 57 /* action to find_command() */ 58 #define DO_ERR 0x01 /* prints errors */ 59 #define DO_ABS 0x02 /* checks absolute paths */ 60 #define DO_NOFUNC 0x04 /* don't return shell functions, for command */ 61 #define DO_ALTPATH 0x08 /* using alternate path */ 62 #define DO_ALTBLTIN 0x20 /* %builtin in alt. path */ 63 64 extern const char *pathopt; /* set by padvance */ 65 66 void shellexec(char **, char **, const char *, int, int) __dead; 67 char *padvance(const char **, const char *, int); 68 void find_command(char *, struct cmdentry *, int, const char *); 69 int (*find_builtin(char *))(int, char **); 70 int (*find_splbltin(char *))(int, char **); 71 void hashcd(void); 72 void changepath(const char *); 73 void deletefuncs(void); 74 void getcmdentry(char *, struct cmdentry *); 75 union node; 76 void defun(char *, union node *, int); 77 int unsetfunc(char *); 78 void hash_special_builtins(void); 79