Re: [yocto] O_RDONLY ... missed bits/fcntl.h not as expected

Arno Steffens Mon, 12 Mar 2018 04:35:39 -0700

You are right, the bits/fcntl-32.h at the very end has a

#include <bits/fcntl-linux.h>

But, all lines in <bits/fcntl.h> are greyed (not active), except these I noted as bold (below). So it not become active.

I would assume __arm__ should be set by someone.

It seems it is not a problem for the compiler, but for the Eclipse viewer to show the code.

That is the problem here. I try to set ARCH=arm at various places in eclipse. but id doesn't have an effect.

Mhh.

Gesendet: Montag, 12. März 2018 um 11:39 Uhr
Von: "Burton, Ross" <ross.bur...@intel.com>
An: "Arno Steffens" <s...@gmx.li>
Cc: Yocto-mailing-list <yocto@yoctoproject.org>
Betreff: Re: Re: [yocto] O_RDONLY ... missed bits/fcntl.h not as expected

Have you looked at the content of bits/fcntl-32.h?

On 12 March 2018 at 10:32, Arno Steffens <s...@gmx.li> wrote:

Sure, sorry if this wasn't clear.

For me the chain is

<fcntl.h> includes <bits/fcntl.h> (see below) and this doesn't include <bits/fcntl-linux.h>.

This is my SDK sysroot for cortexa9-hf.

Arno

/*
* Copyright (C) 2005-2011 by Wind River Systems, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/

#if defined (__arm__)
#define __MHWORDSIZE           32
#elif defined (__aarch64__) && defined ( __LP64__)
#define __MHWORDSIZE           64
#elif defined (__aarch64__)
#define __MHWORDSIZE           32
#else
#include <bits/wordsize.h>
#if defined (__WORDSIZE)
#define __MHWORDSIZE           __WORDSIZE
#else
#error "__WORDSIZE is not defined"
#endif
#endif

#if __MHWORDSIZE == 32

#ifdef _MIPS_SIM

#if _MIPS_SIM == _ABIO32
#include <bits/fcntl-32.h>
#elif _MIPS_SIM == _ABIN32
#include <bits/fcntl-n32.h>
#else
#error "Unknown _MIPS_SIM"
#endif

#else /* _MIPS_SIM is not defined */
#include <bits/fcntl-32.h>
#endif

#elif __MHWORDSIZE == 64
#include <bits/fcntl-64.h>
#else
#error "Unknown __WORDSIZE detected"
#endif /* matches #if __WORDSIZE == 32 */

Gesendet: Montag, 12. März 2018 um 11:00 Uhr
Von: "Burton, Ross" <ross.bur...@intel.com>
An: "Arno Steffens" <s...@gmx.li>
Cc: Yocto-mailing-list <yocto@yoctoproject.org>
Betreff: Re: [yocto] O_RDONLY ... missed bits/fcntl.h not as expected

Can you explain what the actual problem is?

For me the include you'd use in programs <fcntl.h> includes <bits/fcntl.h> which includes <bits/fcntl-linux.h> which defines O_RDONLY.

Ross

On 12 March 2018 at 07:32, Arno Steffens <s...@gmx.li> wrote:
I looked for
#define O_RDONLY 00
#define O_WRONLY 01
#define O_RDWR 02
and found it in : bits/fcntl-linux.h. According to this file it should not be included, but bits/fcntl.h.
And it requires something like that:

A minimal <bits/fcntl.h> contains just:
struct flock {...}
#ifdef __USE_LARGEFILE64
struct flock64 {...}
#endif
#include <bits/fcntl-linux.h>

But this doesn't finally include the fcntl-linux.h as expected. Am I doing something wrong?
Regards
Arno

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Re: [yocto] O_RDONLY ... missed bits/fcntl.h not as expected

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