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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
     27 /*	  All Rights Reserved	*/
     28 
     29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     30 /*
     31  *	UNIX shell
     32  */
     33 
     34 #include 		<setjmp.h>
     35 #include		"mode.h"
     36 #include		"name.h"
     37 #include		<sys/param.h>
     38 #ifndef NOFILE
     39 #define	NOFILE 20
     40 #endif
     41 /* temp files and io */
     42 
     43 int				output = 2;
     44 int				ioset;
     45 struct ionod	*iotemp;	/* files to be deleted sometime */
     46 struct ionod	*fiotemp;	/* function files to be deleted sometime */
     47 struct ionod	*iopend;	/* documents waiting to be read at NL */
     48 struct fdsave	fdmap[NOFILE];
     49 
     50 /* substitution */
     51 int				dolc;
     52 unsigned char			**dolv;
     53 struct dolnod	*argfor;
     54 struct argnod	*gchain;
     55 
     56 
     57 /* name tree and words */
     58 int				wdval;
     59 int				wdnum;
     60 int				fndef;
     61 int				nohash;
     62 struct argnod	*wdarg;
     63 int				wdset;
     64 BOOL			reserv;
     65 
     66 /* special names */
     67 unsigned char			*pcsadr;
     68 unsigned char			*pidadr;
     69 unsigned char			*cmdadr;
     70 
     71 /* transput */
     72 int 			tmpout_offset;
     73 unsigned int 		serial;
     74 unsigned 		peekc;
     75 unsigned		peekn;
     76 unsigned char 			*comdiv;
     77 long			flags;
     78 int				rwait;	/* flags read waiting */
     79 
     80 /* error exits from various parts of shell */
     81 jmp_buf			subshell;
     82 jmp_buf			errshell;
     83 
     84 /* fault handling */
     85 BOOL			trapnote;
     86 
     87 /* execflgs */
     88 int				exitval;
     89 int				retval;
     90 BOOL			execbrk;
     91 int				loopcnt;
     92 int				breakcnt;
     93 int 			funcnt;
     94 int				eflag;
     95 /*
     96  * The following flag is set if you try to exit with stopped jobs.
     97  * On the second try the exit will succeed.
     98  */
     99 int			tried_to_exit;
    100 /*
    101  * The following flag is set to true if /usr/ucb is found in the path
    102  * before /usr/bin. This value is checked when executing the echo and test
    103  * built-in commands. If true, the command behaves as in BSD systems.
    104  */
    105 int				ucb_builtins;
    106 
    107 /* The following stuff is from stak.h	*/
    108 
    109 unsigned char 			*stakbas;
    110 unsigned char			*staktop;
    111 unsigned char			*stakbot = 0;
    112 struct blk			*stakbsy;
    113 unsigned char 			*brkend;
    114