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Diffstat (limited to 'bin/sh/shell.h')
| -rw-r--r-- | bin/sh/shell.h | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/bin/sh/shell.h b/bin/sh/shell.h new file mode 100644 index 0000000..318d56e --- /dev/null +++ b/bin/sh/shell.h @@ -0,0 +1,224 @@ +/* $NetBSD: shell.h,v 1.29 2019/01/22 13:48:28 kre Exp $ */ + +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)shell.h 8.2 (Berkeley) 5/4/95 + */ + +/* + * The follow should be set to reflect the type of system you have: + * JOBS -> 1 if you have Berkeley job control, 0 otherwise. + * define BSD if you are running 4.2 BSD or later. + * define SYSV if you are running under System V. + * define DEBUG=1 to compile in debugging ('set -o debug' to turn on) + * define DEBUG=2 to compile in and enable debugging. + * define DEBUG=3 for DEBUG==2 + enable most standard debug output + * define DEBUG=4 for DEBUG==2 + enable absolutely everything + * define DO_SHAREDVFORK to indicate that vfork(2) shares its address + * with its parent. + * define BOGUS_NOT_COMMAND to allow ! reserved words in weird places + * (traditional ash behaviour.) + * + * When debugging is on, debugging info will be written to ./trace and + * a quit signal will generate a core dump. + */ + +#ifndef SHELL_H +#define SHELL_H +#include <sys/param.h> + +#define JOBS 1 +#ifndef BSD +#define BSD 1 +#endif + +#ifndef DO_SHAREDVFORK +#if defined(__NetBSD_Version__) && __NetBSD_Version__ >= 104000000 +#define DO_SHAREDVFORK +#endif +#endif + +typedef void *pointer; +#ifndef NULL +#define NULL (void *)0 +#endif +#ifndef STATIC +#define STATIC /* empty */ +#endif +#define MKINIT /* empty */ + +#include <sys/cdefs.h> + +extern const char nullstr[1]; /* null string */ + +#ifdef SMALL +#undef DEBUG +#endif + +#ifdef DEBUG + +extern uint64_t DFlags; +extern int ShNest; + +/* + * This is selected as there are 26 letters in ascii - not that that + * matters for anything, just makes it easier to assign a different + * command letter to each debug option. We currently use only 18 + * so this could be reduced, but that is of no real benefit. It can also + * be increased, but that both limits the maximum value tha can be + * used with DBG_EXTRAS(), and causes problems with verbose option naming. + */ +#define DBG_VBOSE_SHIFT 27 +#define DBG_EXTRAS(n) ((DBG_VBOSE_SHIFT * 2) + (n)) + +/* + * Macros to enable tracing, so the mainainer can control + * just how much debug output is dumped to the trace file + * + * In the X forms, "xtra" can be any legal C statement(s) without (bare) commas + * executed if the relevant debug flag is enabled, after any tracing output. + */ +#define CTRACE(when, param) do { \ + if ((DFlags & (when)) != 0) \ + trace param; \ + } while (/*CONSTCOND*/ 0) + +#define CCTRACE(when,cond,param) do { \ + if ((cond) && (DFlags & (when)) != 0) \ + trace param; \ + } while (/*CONSTCOND*/ 0) + +#define CTRACEV(when, param) do { \ + if ((DFlags & (when)) != 0) \ + tracev param; \ + } while (/*CONSTCOND*/ 0) + +#define XTRACE(when, param, xtra) do { \ + if ((DFlags & (when)) != 0) { \ + trace param; \ + xtra; \ + } \ + } while (/*CONSTCOND*/ 0) + +#define VTRACE(when, param) do { \ + if ((DFlags & \ + (when)<<DBG_VBOSE_SHIFT) != 0) \ + trace param; \ + } while (/*CONSTCOND*/ 0) + +#define CVTRACE(when,cond,param) do { \ + if ((cond) && (DFlags & \ + (when)<<DBG_VBOSE_SHIFT) != 0) \ + trace param; \ + } while (/*CONSTCOND*/ 0) + +#define VTRACEV(when, param) do { \ + if ((DFlags & \ + (when)<<DBG_VBOSE_SHIFT) != 0) \ + tracev param; \ + } while (/*CONSTCOND*/ 0) + +#define VXTRACE(when, param, xtra) do { \ + if ((DFlags & \ + (when)<<DBG_VBOSE_SHIFT) != 0) {\ + trace param; \ + xtra; \ + } \ + } while (/*CONSTCOND*/ 0) + +#define SHELL_FORKED() ShNest++ +#define VFORK_BLOCK { const int _ShNest = ShNest; +#define VFORK_END } +#define VFORK_UNDO() ShNest = _ShNest + +#define DBG_ALWAYS (1LL << 0) +#define DBG_PARSE (1LL << 1) /* r (read commands) */ +#define DBG_EVAL (1LL << 2) /* e */ +#define DBG_EXPAND (1LL << 3) /* x */ +#define DBG_JOBS (1LL << 4) /* j */ +#define DBG_PROCS (1LL << 5) /* p */ +#define DBG_REDIR (1LL << 6) /* f (fds) */ +#define DBG_CMDS (1LL << 7) /* c */ +#define DBG_ERRS (1LL << 8) /* z (?) */ +#define DBG_WAIT (1LL << 9) /* w */ +#define DBG_TRAP (1LL << 10) /* t */ +#define DBG_VARS (1LL << 11) /* v */ +#define DBG_INPUT (1LL << 12) /* i */ +#define DBG_OUTPUT (1LL << 13) /* o */ +#define DBG_MEM (1LL << 14) /* m */ +#define DBG_ARITH (1LL << 15) /* a */ +#define DBG_HISTORY (1LL << 16) /* h */ +#define DBG_SIG (1LL << 17) /* s */ +#define DBG_MATCH (1LL << 18) /* g (glob) */ +#define DBG_LEXER (1LL << 19) /* l */ + +/* + * reserved extras: b=builtins y=alias + * still free: d k n q u + */ + + /* use VTRACE(DBG_ALWAYS, (...)) to test this one */ +#define DBG_VERBOSE (1LL << DBG_VBOSE_SHIFT) + + /* DBG_EXTRAS 0 .. 9 (max) only - non-alpha options (no VTRACE !!) */ +#define DBG_U0 (1LL << DBG_EXTRAS(0)) /* 0 - ad-hoc extra flags */ +#define DBG_U1 (1LL << DBG_EXTRAS(1)) /* 1 - for short term */ +#define DBG_U2 (1LL << DBG_EXTRAS(2)) /* 2 - extra tracing */ +#define DBG_U3 (1LL << DBG_EXTRAS(3)) /* 3 - when needed */ + /* 4, 5, & 6 currently free */ +#define DBG_LINE (1LL << DBG_EXTRAS(7)) /* @ ($LINENO) */ +#define DBG_PID (1LL << DBG_EXTRAS(8)) /* $ ($$) */ +#define DBG_NEST (1LL << DBG_EXTRAS(9)) /* ^ */ + +/* 26 lower case, 26 upper case, always, verbose, and 10 extras: 64 bits */ + +extern void set_debug(const char *, int); + +#else /* DEBUG */ + +#define CTRACE(when, param) /* conditional normal trace */ +#define CCTRACE(when, cond, param) /* more conditional normal trace */ +#define CTRACEV(when, param) /* conditional varargs trace */ +#define XTRACE(when, param, extra) /* conditional trace, plus more */ +#define VTRACE(when, param) /* conditional verbose trace */ +#define CVTRACE(when, cond, param) /* more conditional verbose trace */ +#define VTRACEV(when, param) /* conditional verbose varargs trace */ +#define VXTRACE(when, param, extra) /* cond verbose trace, plus more */ + +#define SHELL_FORKED() +#define VFORK_BLOCK +#define VFORK_END +#define VFORK_UNDO() + +#endif /* DEBUG */ + +#endif /* SHELL_H */ |