1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 35 /* values of cmdtype */ 36 #define CMDUNKNOWN -1 /* no entry in table for command */ 37 #define CMDNORMAL 0 /* command is an executable program */ 38 #define CMDBUILTIN 1 /* command is a shell builtin */ 39 #define CMDFUNCTION 2 /* command is a shell function */ 40 41 /* values for typecmd_impl's third parameter */ 42 enum { 43 TYPECMD_SMALLV, /* command -v */ 44 TYPECMD_BIGV, /* command -V */ 45 TYPECMD_TYPE /* type */ 46 }; 47 48 union node; 49 struct cmdentry { 50 int cmdtype; 51 union param { 52 int index; 53 struct funcdef *func; 54 } u; 55 int special; 56 const char *cmdname; 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 void shellexec(char **, char **, const char *, int) __dead2; 65 char *padvance(const char **, const char **, const char *); 66 void find_command(const char *, struct cmdentry *, int, const char *); 67 int find_builtin(const char *, int *); 68 void hashcd(void); 69 void changepath(const char *); 70 void defun(const char *, union node *); 71 int unsetfunc(const char *); 72 int isfunc(const char *); 73 int typecmd_impl(int, char **, int, const char *); 74 void clearcmdentry(void); 75 const void *itercmd(const void *, struct cmdentry *); 76