From: Cyril Hrubis <chrubis@suse.cz>
To: Jeff Layton <jlayton@redhat.com>,
libc-alpha@sourceware.org, linux-fsdevel@vger.kernel.org,
Michael Kerrisk <mtk.manpages@gmail.com>,
Carlos O'Donell <carlos@redhat.com>,
Yuriy Kolerov <Yuriy.Kolerov@synopsys.com>
Subject: Re: [glibc PATCH] fcntl: put F_OFD_* constants under #ifdef __USE_FILE_OFFSET64
Date: Wed, 17 Aug 2016 23:30:34 +0200 [thread overview]
Message-ID: <20160817213033.GA20169@rei.lan> (raw)
In-Reply-To: <20160817200305.GE21655@vapier.lan>
Hi!
> the trouble is that glibc only does fcntl->fcntl64, it doesn't do any
> other cmd or arg translation. that means users are forced to pick the
> right cmd (FOO or FOO64) that matches the LFS build mode. i.e. they
> can't use FOO w/LFS turned on, and they can't use FOO64 w/LFS turned
> off. otherwise there's a mismatch in the struct flock.
One way to fix that would be to add fcntl32() that does the flock <->
flock64 translation for F_OFD_XXX and calls the generall fcntl()
implementation. Then select between fcntl() and fctnt32() on 32bit
architectures based on _FILE_OFFSET_BITS in the preprocessor in the
fcntl header. That way we wouldn't have to touch the kernel at all.
--
Cyril Hrubis
chrubis@suse.cz
prev parent reply other threads:[~2016-08-17 21:35 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-17 14:47 [glibc PATCH] fcntl: put F_OFD_* constants under #ifdef __USE_FILE_OFFSET64 Jeff Layton
2016-08-17 15:44 ` Joseph Myers
2016-08-17 17:49 ` Jeff Layton
2016-08-17 17:56 ` Joseph Myers
2016-08-17 18:23 ` Jeff Layton
2016-08-17 16:13 ` Mike Frysinger
2016-08-17 17:34 ` Florian Weimer
2016-08-17 17:39 ` Jeff Layton
2016-08-17 18:02 ` Florian Weimer
2016-08-17 18:21 ` Jeff Layton
2016-08-17 18:51 ` Florian Weimer
2016-08-17 19:20 ` Jeff Layton
2016-08-18 8:44 ` Florian Weimer
2016-08-18 8:58 ` Andreas Schwab
2016-08-17 20:52 ` Andreas Schwab
2016-08-18 8:45 ` Florian Weimer
2016-08-17 18:43 ` Mike Frysinger
2016-08-17 19:15 ` Jeff Layton
2016-08-17 19:59 ` Michael Kerrisk (man-pages)
2016-08-17 20:05 ` Jeff Layton
2016-08-17 20:37 ` Mike Frysinger
2016-08-17 20:57 ` Jeff Layton
2016-08-17 21:35 ` Mike Frysinger
2016-08-17 21:48 ` Jeff Layton
2016-08-18 9:00 ` Florian Weimer
2016-08-23 11:03 ` Cyril Hrubis
2016-08-23 11:36 ` Jeff Layton
2016-08-23 11:38 ` Cyril Hrubis
2016-08-23 21:10 ` Michael Kerrisk (man-pages)
2016-11-14 13:45 ` Cyril Hrubis
2016-11-22 18:41 ` Florian Weimer
2016-08-18 8:57 ` Florian Weimer
2016-08-17 20:03 ` Mike Frysinger
2016-08-17 21:30 ` Cyril Hrubis [this message]
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