usr/src/cmd/sh/defs.c

   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;