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[CVE-2009-0029] s390 specific system call wrappers

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Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens
2009-01-14 14:14:36 +01:00
parent 2b66421995
commit 26689452f5
6 changed files with 50 additions and 44 deletions
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35
arch/s390/kernel/sys_s390.c
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@@ -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