From: Arun Sharma <arun.sharma@intel.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "David S. Miller" <davem@redhat.com>, linux-arch@vger.kernel.org
Subject: Re: sys getdents64 needs compat wrapper ?
Date: Mon, 14 Jun 2004 11:15:53 -0700 [thread overview]
Message-ID: <40CDEB59.3040203@intel.com> (raw)
In-Reply-To: <200406111709.35146.arnd@arndb.de>
On 6/11/2004 8:09 AM, Arnd Bergmann wrote:
>
>>+ if (dirent) {
>>+ if ((__put_user(offset, (u32 __user *)&dirent->d_off))
>>+ || (__put_user(offset >> 32, ((u32 __user *)&dirent->d_off) + 1)))
>>+ goto efault;
>>+ }
>
>
> I just realized your code is broken on big-endian architectures, so
> we should either get back to __copy_to_user or find the optimal solution
> now.
>
> How about a {__,}{get,put}_user_unaligned() that gets defined per
> architecture in one of these two ways:
We'll go for the optimal solution now. We'll provide an <asm-generic/uaccess.h> that does __copy_to_user and a <asm-ia64/uaccess.h> that's optimized for ia64. Archs which don't care about alignment can override appropriately.
Should have the patch tested by tomorrow.
-Arun
next prev parent reply other threads:[~2004-06-14 18:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-20 21:06 =?iso-8859-1?Q?Re:_sys_getdents64_needs_compat_wrapper_??= Arnd Bergmann
2004-06-05 0:16 ` =?iso-8859-1?Q?Re:_sys_getdents64_needs_compat_wrapper_??= Arun Sharma
2004-06-05 0:28 ` sys getdents64 needs compat wrapper ? David S. Miller
2004-06-07 21:13 ` Arun Sharma
2004-06-07 21:58 ` David S. Miller
2004-06-11 15:09 ` Arnd Bergmann
2004-06-14 18:15 ` Arun Sharma [this message]
2004-06-17 22:28 ` Arun Sharma
2004-06-17 23:36 ` Arnd Bergmann
2004-06-18 0:56 ` Arun Sharma
2004-06-18 17:05 ` Arun Sharma
2004-06-20 21:50 ` Arnd Bergmann
2004-06-22 18:21 ` Arun Sharma
-- strict thread matches above, loose matches on Subject: below --
2004-06-05 14:52 =?iso-8859-1?Q?Re:_Re:_Re:_sys_getdents64_needs_compat_wrapper_??= Arnd Bergmann
2004-06-05 18:41 ` sys getdents64 needs compat wrapper ? Andrew Morton
2004-06-05 19:31 ` David S. Miller
2004-05-20 18:32 sys_getdents64 " Arun Sharma
2004-05-20 20:58 ` David S. Miller
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