From 26689452f5ca201add63b1b1ff0dbcf82d6885e7 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 14 Jan 2009 14:14:36 +0100
Subject: [CVE-2009-0029] s390 specific system call wrappers

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
---
 arch/s390/kernel/sys_s390.c | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

(limited to 'arch/s390/kernel/sys_s390.c')

diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index c34be4568b80..c7ae4b17e0e3 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -29,6 +29,7 @@
 #include <linux/personality.h>
 #include <linux/unistd.h>
 #include <linux/ipc.h>
+#include <linux/syscalls.h>
 #include <asm/uaccess.h>
 #include "entry.h"
 
@@ -74,7 +75,7 @@ struct mmap_arg_struct {
 	unsigned long offset;
 };
 
-asmlinkage long sys_mmap2(struct mmap_arg_struct __user  *arg)
+SYSCALL_DEFINE1(mmap2, struct mmap_arg_struct __user *, arg)
 {
 	struct mmap_arg_struct a;
 	int error = -EFAULT;
@@ -86,7 +87,7 @@ out:
 	return error;
 }
 
-asmlinkage long old_mmap(struct mmap_arg_struct __user *arg)
+SYSCALL_DEFINE1(s390_old_mmap, struct mmap_arg_struct __user *, arg)
 {
 	struct mmap_arg_struct a;
 	long error = -EFAULT;
@@ -108,8 +109,8 @@ out:
  *
  * This is really horribly ugly.
  */
-asmlinkage long sys_ipc(uint call, int first, unsigned long second,
-				  unsigned long third, void __user *ptr)
+SYSCALL_DEFINE5(ipc, uint, call, int, first, unsigned long, second,
+		unsigned long, third, void __user *, ptr)
 {
         struct ipc_kludge tmp;
 	int ret;
@@ -175,7 +176,7 @@ asmlinkage long sys_ipc(uint call, int first, unsigned long second,
 }
 
 #ifdef CONFIG_64BIT
-asmlinkage long s390x_newuname(struct new_utsname __user *name)
+SYSCALL_DEFINE1(s390_newuname, struct new_utsname __user *, name)
 {
 	int ret = sys_newuname(name);
 
@@ -186,7 +187,7 @@ asmlinkage long s390x_newuname(struct new_utsname __user *name)
 	return ret;
 }
 
-asmlinkage long s390x_personality(unsigned long personality)
+SYSCALL_DEFINE1(s390_personality, unsigned long, personality)
 {
 	int ret;
 
@@ -205,15 +206,13 @@ asmlinkage long s390x_personality(unsigned long personality)
  */
 #ifndef CONFIG_64BIT
 
-asmlinkage long
-s390_fadvise64(int fd, u32 offset_high, u32 offset_low, size_t len, int advice)
+SYSCALL_DEFINE5(s390_fadvise64, int, fd, u32, offset_high, u32, offset_low,
+		size_t, len, int, advice)
 {
 	return sys_fadvise64(fd, (u64) offset_high << 32 | offset_low,
 			len, advice);
 }
 
-#endif
-
 struct fadvise64_64_args {
 	int fd;
 	long long offset;
@@ -221,8 +220,7 @@ struct fadvise64_64_args {
 	int advice;
 };
 
-asmlinkage long
-s390_fadvise64_64(struct fadvise64_64_args __user *args)
+SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, args)
 {
 	struct fadvise64_64_args a;
 
@@ -231,7 +229,6 @@ s390_fadvise64_64(struct fadvise64_64_args __user *args)
 	return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
 }
 
-#ifndef CONFIG_64BIT
 /*
  * This is a wrapper to call sys_fallocate(). For 31 bit s390 the last
  * 64 bit argument "len" is split into the upper and lower 32 bits. The
@@ -244,9 +241,19 @@ s390_fadvise64_64(struct fadvise64_64_args __user *args)
  * to
  *   %r2: fd, %r3: mode, %r4/%r5: offset, 96(%r15)-103(%r15): len
  */
-asmlinkage long s390_fallocate(int fd, int mode, loff_t offset,
+SYSCALL_DEFINE(s390_fallocate)(int fd, int mode, loff_t offset,
 			       u32 len_high, u32 len_low)
 {
 	return sys_fallocate(fd, mode, offset, ((u64)len_high << 32) | len_low);
 }
+#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
+asmlinkage long SyS_s390_fallocate(long fd, long mode, loff_t offset,
+				   long len_high, long len_low)
+{
+	return SYSC_s390_fallocate((int) fd, (int) mode, offset,
+				   (u32) len_high, (u32) len_low);
+}
+SYSCALL_ALIAS(sys_s390_fallocate, SyS_s390_fallocate);
+#endif
+
 #endif
-- 
cgit