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. 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 33 /* values of cmdtype */ 34 #define CMDUNKNOWN -1 /* no entry in table for command */ 35 #define CMDNORMAL 0 /* command is an executable program */ 36 #define CMDBUILTIN 1 /* command is a shell builtin */ 37 #define CMDFUNCTION 2 /* command is a shell function */ 38 39 /* values for typecmd_impl's third parameter */ 40 enum { 41 TYPECMD_SMALLV, /* command -v */ 42 TYPECMD_BIGV, /* command -V */ 43 TYPECMD_TYPE /* type */ 44 }; 45 46 union node; 47 struct cmdentry { 48 int cmdtype; 49 union param { 50 int index; 51 struct funcdef *func; 52 } u; 53 int special; 54 const char *cmdname; 55 }; 56 57 58 /* action to find_command() */ 59 #define DO_ERR 0x01 /* prints errors */ 60 #define DO_NOFUNC 0x02 /* don't return shell functions, for command */ 61 62 void shellexec(char **, char **, const char *, int) __dead2; 63 char *padvance(const char **, const char **, const char *); 64 void find_command(const char *, struct cmdentry *, int, const char *); 65 int find_builtin(const char *, int *); 66 void hashcd(void); 67 void changepath(const char *); 68 void defun(const char *, union node *); 69 int unsetfunc(const char *); 70 int isfunc(const char *); 71 int typecmd_impl(int, char **, int, const char *); 72 void clearcmdentry(void); 73 const void *itercmd(const void *, struct cmdentry *); 74