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Message-Id: <200906151530.10299.arnd@arndb.de>
Date: Mon, 15 Jun 2009 15:30:09 +0200
From: Arnd Bergmann <arnd@...db.de>
To: liqin.chen@...plusct.com
Cc: Andrew Morton <akpm@...ux-foundation.org>,
linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
torvalds@...ux-foundation.org
Subject: [PATCH] asm-generic: add EMAXERRNO
Some architectures want to flag error returns from a syscall based on
the return value. The range from zero to -511 is for errors that
we can return to user space, so add a #define for this to
include/asm-generic/errno.h.
Reported-by: Chen Liquin <liqin.chen@...plusct.com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
include/asm-generic/errno.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
On Monday 15 June 2009, liqin.chen@...plusct.com wrote:
> Maybe I can don't use EMAXERRNO in score code. But I think define a
> maximum error number in asm-generic/errno.h is better.
>
How about this one?
diff --git a/include/asm-generic/errno.h b/include/asm-generic/errno.h
index e8852c0..16bb31d 100644
--- a/include/asm-generic/errno.h
+++ b/include/asm-generic/errno.h
@@ -106,4 +106,8 @@
#define EOWNERDEAD 130 /* Owner died */
#define ENOTRECOVERABLE 131 /* State not recoverable */
+#ifdef __KERNEL__
+#define EMAXERRNO 511 /* maximum errno value we return to user */
+#endif
+
#endif
--
1.6.3.1
--
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