From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: "Joseph S. Myers" <joseph@codesourcery.com>
Cc: linux-api@vger.kernel.org, lkml <linux-kernel@vger.kernel.org>,
Oleg Nesterov <onestero@redhat.com>,
Stephane Eranian <eranian@googlemail.com>,
Michael Kerrisk <mtk.manpages@googlemail.com>,
Roland McGrath <roland@redhat.com>,
Al Viro <viro@ZenIV.linux.org.uk>,
Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: F_SETOWN_EX and F_GETLK64 conflict
Date: Sun, 04 Oct 2009 23:30:22 +0200 [thread overview]
Message-ID: <1254691822.21044.9.camel@laptop> (raw)
In-Reply-To: <Pine.LNX.4.64.0910041229300.20203@digraph.polyomino.org.uk>
On Sun, 2009-10-04 at 12:35 +0000, Joseph S. Myers wrote:
> In asm-generic/fcntl.h, F_SETOWN_EX and F_GETLK64 both have value 12, and
> F_GETOWN_EX and F_SETLK64 both have value 13. I don't see how this is
> going to work correctly. See
> <http://sourceware.org/ml/libc-ports/2009-10/msg00013.html>.
Ugh,.. yeah, non obvious collision that.
How about something like:
---
arch/alpha/include/asm/fcntl.h | 4 ++--
include/asm-generic/fcntl.h | 19 +++++++++++--------
2 files changed, 13 insertions(+), 10 deletions(-)
diff --git a/arch/alpha/include/asm/fcntl.h b/arch/alpha/include/asm/fcntl.h
index e42823e..73126e4 100644
--- a/arch/alpha/include/asm/fcntl.h
+++ b/arch/alpha/include/asm/fcntl.h
@@ -26,8 +26,8 @@
#define F_GETOWN 6 /* for sockets. */
#define F_SETSIG 10 /* for sockets. */
#define F_GETSIG 11 /* for sockets. */
-#define F_SETOWN_EX 12
-#define F_GETOWN_EX 13
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
/* for posix fcntl() and lockf() */
#define F_RDLCK 1
diff --git a/include/asm-generic/fcntl.h b/include/asm-generic/fcntl.h
index 0c3dd86..cd2d789 100644
--- a/include/asm-generic/fcntl.h
+++ b/include/asm-generic/fcntl.h
@@ -73,9 +73,18 @@
#define F_SETSIG 10 /* for sockets. */
#define F_GETSIG 11 /* for sockets. */
#endif
+
+#ifndef CONFIG_64BIT
+#ifndef F_GETLK64
+#define F_GETLK64 12 /* using 'struct flock64' */
+#define F_SETLK64 13
+#define F_SETLKW64 14
+#endif
+#endif
+
#ifndef F_SETOWN_EX
-#define F_SETOWN_EX 12
-#define F_GETOWN_EX 13
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
#endif
#define F_OWNER_TID 0
@@ -139,12 +148,6 @@ struct flock {
#ifndef CONFIG_64BIT
-#ifndef F_GETLK64
-#define F_GETLK64 12 /* using 'struct flock64' */
-#define F_SETLK64 13
-#define F_SETLKW64 14
-#endif
-
#ifndef HAVE_ARCH_STRUCT_FLOCK64
#ifndef __ARCH_FLOCK64_PAD
#define __ARCH_FLOCK64_PAD
next parent reply other threads:[~2009-10-04 21:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.64.0910041229300.20203@digraph.polyomino.org.uk>
2009-10-04 21:30 ` Peter Zijlstra [this message]
2009-10-29 17:03 ` F_SETOWN_EX and F_GETLK64 conflict Andreas Schwab
2009-10-30 3:21 ` Ulrich Drepper
2009-10-30 5:13 ` Stephen Rothwell
2009-10-30 5:29 ` Stephen Rothwell
[not found] ` <20091030162906.fbc1c40b.sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>
2009-11-12 23:32 ` Stephen Rothwell
[not found] ` <20091113103257.1f4f6e12.sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>
2009-11-14 7:01 ` [PATCH] fcntl: use architecture independent values for new fcntl operations Stephen Rothwell
[not found] ` <20091114180131.da95d2a1.sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>
2009-11-14 9:45 ` [PATCH v2] fcntl: Use consistent values for F_[GS]ETOWN_EX Stephen Rothwell
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