UAPI: fix endianness conditionals in M32R's asm/stat.h
authorDavid Howells <dhowells@redhat.com>
Wed, 13 Mar 2013 21:59:48 +0000 (14:59 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 13 Mar 2013 22:21:49 +0000 (15:21 -0700)
commit415586c9e6d35ca116af714d7d0bea9c9f998ce5
treefe71b4aeed7ba7199419077770c15e65523bd50e
parentca044f9a9ed492f0f7e52df999c10ca6f7cfc5c0
UAPI: fix endianness conditionals in M32R's asm/stat.h

In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be
compared against __BYTE_ORDER in preprocessor conditionals where these are
exposed to userspace (that is they're not inside __KERNEL__ conditionals).

However, in the main kernel the norm is to check for
"defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and
this has incorrectly leaked into the userspace headers.

The definition of struct stat64 in M32R's asm/stat.h is wrong in this way.
 Note that userspace will likely interpret the field order incorrectly as
the big-endian variant on little-endian machines - depending on header
inclusion order.

[!!!] NOTE [!!!]  This patch may adversely change the userspace API.  It might
be better to fix the ordering of st_blocks and __pad4 in struct stat64.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/m32r/include/uapi/asm/stat.h