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 * $FreeBSD$ 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 */ 43 enum { 44 TYPECMD_SMALLV, /* command -v */ 45 TYPECMD_BIGV, /* command -V */ 46 TYPECMD_TYPE /* type */ 47 }; 48 49 union node; 50 struct cmdentry { 51 int cmdtype; 52 union param { 53 int index; 54 struct funcdef *func; 55 } u; 56 int special; 57 }; 58 59 60 /* action to find_command() */ 61 #define DO_ERR 0x01 /* prints errors */ 62 #define DO_NOFUNC 0x02 /* don't return shell functions, for command */ 63 64 extern const char *pathopt; /* set by padvance */ 65 extern int exerrno; /* last exec error */ 66 67 void shellexec(char **, char **, const char *, int) __dead2; 68 char *padvance(const char **, const char *); 69 void find_command(const char *, struct cmdentry *, int, const char *); 70 int find_builtin(const char *, int *); 71 void hashcd(void); 72 void changepath(const char *); 73 void defun(const char *, union node *); 74 int unsetfunc(const char *); 75 int isfunc(const char *); 76 int typecmd_impl(int, char **, int, const char *); 77 void clearcmdentry(void); 78