This is a note to let you know that I've just added the patch titled
compat: use sys_sendfile64() implementation for sendfile syscall
to the 3.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
compat-use-sys_sendfile64-implementation-for-sendfile-syscall.patch
and it can be found in the queue-3.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 1631fcea8399da5e80a80084b3b8c5bfd99d21e7 Mon Sep 17 00:00:00 2001
From: Chris Metcalf <[email protected]>
Date: Mon, 26 Mar 2012 16:26:12 -0400
Subject: compat: use sys_sendfile64() implementation for sendfile syscall
From: Chris Metcalf <[email protected]>
commit 1631fcea8399da5e80a80084b3b8c5bfd99d21e7 upstream.
<asm-generic/unistd.h> was set up to use sys_sendfile() for the 32-bit
compat API instead of sys_sendfile64(), but in fact the right thing to
do is to use sys_sendfile64() in all cases. The 32-bit sendfile64() API
in glibc uses the sendfile64 syscall, so it has to be capable of doing
full 64-bit operations. But the sys_sendfile() kernel implementation
has a MAX_NON_LFS test in it which explicitly limits the offset to 2^32.
So, we need to use the sys_sendfile64() implementation in the kernel
for this case.
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Chris Metcalf <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
include/asm-generic/unistd.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -218,7 +218,7 @@ __SC_COMP(__NR_pwritev, sys_pwritev, com
/* fs/sendfile.c */
#define __NR3264_sendfile 71
-__SC_3264(__NR3264_sendfile, sys_sendfile64, sys_sendfile)
+__SYSCALL(__NR3264_sendfile, sys_sendfile64)
/* fs/select.c */
#define __NR_pselect6 72
Patches currently in stable-queue which might be from [email protected] are
queue-3.3/compat-use-sys_sendfile64-implementation-for-sendfile-syscall.patch
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