Commit 4e383a66 authored by Willy Tarreau's avatar Willy Tarreau Committed by Paul E. McKenney
Browse files

tools/nolibc/stdio: add a minimal set of stdio functions 



This only provides getchar(), putchar(), and puts().

Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 5f493178

tools/include/nolibc/nolibc.h

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@@ -88,6 +88,7 @@ 
#include "types.h"

#include "sys.h"

#include "ctype.h"

#include "stdio.h"

#include "stdlib.h"

#include "string.h"

tools/include/nolibc/stdio.h

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/* SPDX-License-Identifier: LGPL-2.1 OR MIT */

/*

 * minimal stdio function definitions for NOLIBC

 * Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>

 */



#ifndef _NOLIBC_STDIO_H

#define _NOLIBC_STDIO_H



#include "std.h"

#include "arch.h"

#include "types.h"

#include "sys.h"

#include "stdlib.h"

#include "string.h"



#ifndef EOF

#define EOF (-1)

#endif



static __attribute__((unused))

int getchar(void)

{

	unsigned char ch;



	if (read(0, &ch, 1) <= 0)

		return EOF;

	return ch;

}



static __attribute__((unused))

int putchar(int c)

{

	unsigned char ch = c;



	if (write(1, &ch, 1) <= 0)

		return EOF;

	return ch;

}



static __attribute__((unused))

int puts(const char *s)

{

	size_t len = strlen(s);

	ssize_t ret;



	while (len > 0) {

		ret = write(1, s, len);

		if (ret <= 0)

			return EOF;

		s += ret;

		len -= ret;

	}

	return putchar('\n');

}



#endif /* _NOLIBC_STDIO_H */