[patch 006/100] MIPS: Compat: Zero upper 32-bit of offset_high and offset_low.

Chris Wright
2009-04-23T07:30:58Z

[-- Attachment #1: mips-compat-zero-upper-32-bit-of-offset_high-and-offset_low.patch --]
[-- Type: text/plain, Size: 1132 bytes --]

-stable review patch. If anyone has any objections, please let us know.
---------------------

From: Ralf Baechle <ralf@linux-mips.org>

upstream commit: d6c178e9694e7e0c7ffe0289cf4389a498cac735

Through sys_llseek() arguably should do exactly that it doesn't which
means llseek(2) will fail for o32 processes if offset_low has bit 31 set.

As suggested by Heiko Carstens.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
---
arch/mips/kernel/linux32.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -134,9 +134,9 @@ SYSCALL_DEFINE4(32_ftruncate64, unsigned
return sys_ftruncate(fd, merge_64(a2, a3));
}

-SYSCALL_DEFINE5(32_llseek, unsigned long, fd, unsigned long, offset_high,
- unsigned long, offset_low, loff_t __user *, result,
- unsigned long, origin)
+SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
+ unsigned int, offset_low, loff_t __user *, result,
+ unsigned int, origin)
{
return sys_llseek(fd, offset_high, offset_low, result, origin);
}