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authorHeiko Carstens <heiko.carstens@de.ibm.com>2014-01-29 23:05:47 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-30 01:22:40 +0100
commit49382d93852f1ba4a4fbbce20d094f600cc8aff8 (patch)
tree79fc2040f78bb89b1ea90ed3ce9c7351644f7487 /arch/s390
parentfs/compat: fix lookup_dcookie() parameter handling (diff)
downloadlinux-49382d93852f1ba4a4fbbce20d094f600cc8aff8.tar.xz
linux-49382d93852f1ba4a4fbbce20d094f600cc8aff8.zip
s390/compat: change parameter types from unsigned long to compat_ulong_t
Change parameter types of s390's compat ipc syscall from unsigned long to compat_ulong_t to enforce zero extension of these parameters. This is not really a bug, since s390_ipc compat syscall is only a wrapper to the generic compat_sys_ipc() syscall, which performs correct zero and sign extension. This was introduced with commit 56e41d3c5aa8 ("merge compat sys_ipc instances"). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ingo Molnar <mingo@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kernel/compat_linux.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index e030d2bdec1b..db02052bd137 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -286,8 +286,8 @@ asmlinkage long sys32_getegid16(void)
}
#ifdef CONFIG_SYSVIPC
-COMPAT_SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, unsigned long, second,
- unsigned long, third, compat_uptr_t, ptr)
+COMPAT_SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, compat_ulong_t, second,
+ compat_ulong_t, third, compat_uptr_t, ptr)
{
if (call >> 16) /* hack for backward compatibility */
return -EINVAL;