Commit 45a794bf authored by Willy Tarreau's avatar Willy Tarreau Committed by Paul E. McKenney
Browse files

tools/nolibc/errno: extract errno.h from sys.h 



This allows us to provide a minimal errno.h to ease porting applications
that use it.

Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 8d304a37

tools/include/nolibc/errno.h

0 → 100644
+27 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */

/*

 * Minimal errno definitions for NOLIBC

 * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>

 */



#ifndef _NOLIBC_ERRNO_H

#define _NOLIBC_ERRNO_H



#include <asm/errno.h>



/* this way it will be removed if unused */

static int errno;



#ifndef NOLIBC_IGNORE_ERRNO

#define SET_ERRNO(v) do { errno = (v); } while (0)

#else

#define SET_ERRNO(v) do { } while (0)

#endif





/* errno codes all ensure that they will not conflict with a valid pointer

 * because they all correspond to the highest addressable memory page.

 */

#define MAX_ERRNO 4095



#endif /* _NOLIBC_ERRNO_H */

tools/include/nolibc/stdio.h

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 


#include "std.h"

#include "arch.h"

#include "errno.h"

#include "types.h"

#include "sys.h"

#include "stdlib.h"

tools/include/nolibc/sys.h

+1 −16
Original line number Diff line number Diff line
@@ -14,29 +14,14 @@ 
#include <asm/unistd.h>

#include <asm/signal.h>  // for SIGCHLD

#include <asm/ioctls.h>

#include <asm/errno.h>

#include <linux/fs.h>

#include <linux/loop.h>

#include <linux/time.h>



#include "arch.h"

#include "errno.h"

#include "types.h"



/* this way it will be removed if unused */

static int errno;



#ifndef NOLIBC_IGNORE_ERRNO

#define SET_ERRNO(v) do { errno = (v); } while (0)

#else

#define SET_ERRNO(v) do { } while (0)

#endif





/* errno codes all ensure that they will not conflict with a valid pointer

 * because they all correspond to the highest addressable memory page.

 */

#define MAX_ERRNO 4095





/* Functions in this file only describe syscalls. They're declared static so

 * that the compiler usually decides to inline them while still being allowed