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      1 /*	$NetBSD: bltin.h,v 1.16 2021/05/18 21:39:06 kre Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1991, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Kenneth Almquist.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)bltin.h	8.1 (Berkeley) 5/31/93
     35  */
     36 
     37 /*
     38  * This file is included by programs which are optionally built into the
     39  * shell.
     40  *
     41  * We always define SHELL_BUILTIN, to allow other included headers to
     42  * hide some of their symbols if appropriate.
     43  *
     44  * If SHELL is defined, we try to map the standard UNIX library routines
     45  * to ash routines using defines.
     46  */
     47 
     48 #define SHELL_BUILTIN
     49 #include "../shell.h"
     50 #include "../mystring.h"
     51 #ifdef SHELL
     52 #include "../output.h"
     53 #include "../error.h"
     54 #include "../var.h"
     55 #undef stdout
     56 #undef stderr
     57 #undef putc
     58 #undef putchar
     59 #undef fileno
     60 #undef ferror
     61 #undef clearerr
     62 #define FILE struct output
     63 #define stdout out1
     64 #define stderr out2
     65 #ifdef __GNUC__
     66 #define _RETURN_INT(x)	({(x); 0;}) /* map from void foo() to int bar() */
     67 #else
     68 #define _RETURN_INT(x)	((x), 0) /* map from void foo() to int bar() */
     69 #endif
     70 #define fprintf(...)	_RETURN_INT(outfmt(__VA_ARGS__))
     71 #define printf(...)	_RETURN_INT(out1fmt(__VA_ARGS__))
     72 #define putc(c, file)	_RETURN_INT(outc(c, file))
     73 #define putchar(c)	_RETURN_INT(out1c(c))
     74 #define fputs(...)	_RETURN_INT(outstr(__VA_ARGS__))
     75 #define fflush(f)	_RETURN_INT(flushout(f))
     76 #define fileno(f) ((f)->fd)
     77 #define ferror(f) ((f)->flags & OUTPUT_ERR)
     78 #define clearerr(f) ((f)->flags &= ~OUTPUT_ERR)
     79 #define INITARGS(argv)
     80 #define	err sh_err
     81 #define	verr sh_verr
     82 #define	errx sh_errx
     83 #define	verrx sh_verrx
     84 #define	warn sh_warn
     85 #define	vwarn sh_vwarn
     86 #define	warnx sh_warnx
     87 #define	vwarnx sh_vwarnx
     88 #define exit sh_exit
     89 #define setprogname(s)
     90 #define getprogname() commandname
     91 #define setlocate(l,s) 0
     92 
     93 #define getenv(p) bltinlookup((p),0)
     94 
     95 #else /* ! SHELL */
     96 #undef NULL
     97 #include <stdio.h>
     98 #undef main
     99 #define INITARGS(argv)	if ((commandname = argv[0]) == NULL) {fputs("Argc is zero\n", stderr); exit(2);} else
    100 #endif /* ! SHELL */
    101 
    102 pointer stalloc(int);
    103 
    104 int echocmd(int, char **);
    105 
    106 
    107 extern const char *commandname;
    108