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 8.3 (Berkeley) 6/8/95 37 * $Id: exec.h,v 1.6 1997/02/22 13:58:25 peter Exp $ 38 */ 39 40 /* values of cmdtype */ 41 #define CMDUNKNOWN -1 /* no entry in table for command */ 42 #define CMDNORMAL 0 /* command is an executable program */ 43 #define CMDBUILTIN 1 /* command is a shell builtin */ 44 #define CMDFUNCTION 2 /* command is a shell function */ 45 46 47 struct cmdentry { 48 int cmdtype; 49 union param { 50 int index; 51 union node *func; 52 } u; 53 }; 54 55 56 extern char *pathopt; /* set by padvance */ 57 extern int exerrno; /* last exec error */ 58 59 void shellexec __P((char **, char **, char *, int)); 60 char *padvance __P((char **, char *)); 61 int hashcmd __P((int, char **)); 62 void find_command __P((char *, struct cmdentry *, int, char *)); 63 int find_builtin __P((char *)); 64 void hashcd __P((void)); 65 void changepath __P((const char *)); 66 void deletefuncs __P((void)); 67 void getcmdentry __P((char *, struct cmdentry *)); 68 void addcmdentry __P((char *, struct cmdentry *)); 69 void defun __P((char *, union node *)); 70 int unsetfunc __P((char *)); 71 int typecmd __P((int, char **)); 72