| | 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 1.15 2011/06/13 21:03:27 jilles Exp $ |
| | 38 | */ |
| | 39 | |
| | 40 | extern const char *commandname; /* currently executing command */ |
| | 41 | extern int exitstatus; /* exit status of last command */ |
| | 42 | extern int oexitstatus; /* saved exit status */ |
| | 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 | /* flags in argument to evaltree/evalstring */ |
| | 54 | #define EV_EXIT 01 /* exit after evaluating tree */ |
| | 55 | #define EV_TESTED 02 /* exit status is checked; ignore -e flag */ |
| | 56 | #define EV_BACKCMD 04 /* command executing within back quotes */ |
| | 57 | |
| | 58 | void evalstring(char *, int); |
| | 59 | union node; /* BLETCH for ansi C */ |
| | 60 | void evaltree(union node *, int); |
| | 61 | void evalbackcmd(union node *, struct backcmd *); |
| | 62 | |
| | 63 | /* in_function returns nonzero if we are currently evaluating a function */ |
| | 64 | #define in_function() funcnest |
| | 65 | extern int funcnest; |
| | 66 | extern int evalskip; |
| | 67 | |
| | 68 | /* reasons for skipping commands (see comment on breakcmd routine) */ |
| | 69 | #define SKIPBREAK 1 |
| | 70 | #define SKIPCONT 2 |
| | 71 | #define SKIPFUNC 3 |
| | 72 | #define SKIPFILE 4 |
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