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 * @(#)eval.h 8.2 (Berkeley) 5/4/95 37 * $FreeBSD: src/bin/sh/eval.h,v 1.7.2.2 2002/08/27 01:36:28 tjr Exp $ 38 * $DragonFly: src/bin/sh/eval.h,v 1.3 2004/03/19 18:39:41 cpressey Exp $ 39 */ 40 41 extern const char *commandname; /* currently executing command */ 42 extern int exitstatus; /* exit status of last command */ 43 extern struct strlist *cmdenviron; /* environment for builtin command */ 44 45 46 struct backcmd { /* result of evalbackcmd */ 47 int fd; /* file descriptor to read from */ 48 char *buf; /* buffer */ 49 int nleft; /* number of chars in buffer */ 50 struct job *jp; /* job structure for command */ 51 }; 52 53 int evalcmd(int, char **); 54 void evalstring(char *); 55 union node; /* BLETCH for ansi C */ 56 void evaltree(union node *, int); 57 void evalbackcmd(union node *, struct backcmd *); 58 int bltincmd(int, char **); 59 int breakcmd(int, char **); 60 int returncmd(int, char **); 61 int falsecmd(int, char **); 62 int truecmd(int, char **); 63 int execcmd(int, char **); 64 int commandcmd(int, char **); 65 66 /* in_function returns nonzero if we are currently evaluating a function */ 67 #define in_function() funcnest 68 extern int funcnest; 69 extern int evalskip; 70 71 /* reasons for skipping commands (see comment on breakcmd routine) */ 72 #define SKIPBREAK 1 73 #define SKIPCONT 2 74 #define SKIPFUNC 3 75 #define SKIPFILE 4 76