[PATCH] Don't force O_LARGEFILE for 32 bit processes on ia64
authorYoav Zach <yoav_zach@yahoo.com>
Thu, 23 Jun 2005 07:09:58 +0000 (00:09 -0700)
committerLinus Torvalds <torvalds@ppc970.osdl.org>
Thu, 23 Jun 2005 16:45:28 +0000 (09:45 -0700)
commitef3daeda7b58f046f94b26637d500354038d39f4
treeacce3fb6a4ef5fa5c4e6962490d6f0db434fbad3
parent44e58a6a0bd604f46be9d808408a1cd880cc9b19
[PATCH] Don't force O_LARGEFILE for 32 bit processes on ia64

In ia64 kernel, the O_LARGEFILE flag is forced when opening a file.  This
is problematic for execution of 32 bit processes, which are not largefile
aware, either by SW emulation or by HW execution.

For such processes, the problem is two-fold:

1) When trying to open a file that is larger than 4G
   the operation should fail, but it's not
2) Writing to offset larger than 4G should fail, but
   it's not

The proposed patch takes advantage of the way 32 bit processes are
identified in ia64 systems.  Such processes have PER_LINUX32 for their
personality.  With the patch, the ia64 kernel will not enforce the
O_LARGEFILE flag if the current process has PER_LINUX32 set.  The behavior
for all other architectures remains unchanged.

Signed-off-by: Yoav Zach <yoav.zach@intel.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fs/open.c
include/asm-ia64/fcntl.h
include/linux/fcntl.h