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 struct cmdentry { 50 int cmdtype; 51 union param { 52 int index; 53 union node *func; 54 } u; 55 int special; 56 }; 57 58 59 extern char *pathopt; /* set by padvance */ 60 extern int exerrno; /* last exec error */ 61 62 void shellexec(char **, char **, char *, int); 63 char *padvance(char **, char *); 64 int hashcmd(int, char **); 65 void find_command(char *, struct cmdentry *, int, char *); 66 int find_builtin(char *, int *); 67 void hashcd(void); 68 void changepath(const char *); 69 void deletefuncs(void); 70 void addcmdentry(char *, struct cmdentry *); 71 void defun(char *, union node *); 72 int unsetfunc(char *); 73 int typecmd_impl(int, char **, int); 74 int typecmd(int, char **); 75 void clearcmdentry(int); 76