Messages in this thread | | | Date | Tue, 10 May 2005 16:47:17 +1000 | From | Anton Blanchard <> | Subject | Re: [PATCH]: Don't force O_LARGEFILE for 32 bit processes on ia64 - 2.6.12-rc3 |
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Hi,
> 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.
A 32 bit application should not be using the native open routine.
Sounds like you have a 64bit emulator running 32bit applications. The other 64bit architectures need to be audited to make sure the PER_LINUX32 flag is safe to use here.
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