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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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19
arch/s390/kernel/signal.c
View file

@ -25,6 +25,7 @@
#include <linux/personality.h>
#include <linux/binfmts.h>
#include <linux/tracehook.h>
#include <linux/syscalls.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
#include <asm/lowcore.h>
@ -53,8 +54,7 @@ typedef struct
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage int
sys_sigsuspend(int history0, int history1, old_sigset_t mask)
SYSCALL_DEFINE3(sigsuspend, int, history0, int, history1, old_sigset_t, mask)
{
mask &= _BLOCKABLE;
spin_lock_irq(&current->sighand->siglock);
@ -70,9 +70,8 @@ sys_sigsuspend(int history0, int history1, old_sigset_t mask)
return -ERESTARTNOHAND;
}
asmlinkage long
sys_sigaction(int sig, const struct old_sigaction __user *act,
struct old_sigaction __user *oact)
SYSCALL_DEFINE3(sigaction, int, sig, const struct old_sigaction __user *, act,
struct old_sigaction __user *, oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
@ -102,15 +101,13 @@ sys_sigaction(int sig, const struct old_sigaction __user *act,
return ret;
}
asmlinkage long
sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
SYSCALL_DEFINE2(sigaltstack, const stack_t __user *, uss,
stack_t __user *, uoss)
{
struct pt_regs *regs = task_pt_regs(current);
return do_sigaltstack(uss, uoss, regs->gprs[15]);
}
/* Returns non-zero on fault. */
static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
{
@ -164,7 +161,7 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
return 0;
}
asmlinkage long sys_sigreturn(void)
SYSCALL_DEFINE0(sigreturn)
{
struct pt_regs *regs = task_pt_regs(current);
sigframe __user *frame = (sigframe __user *)regs->gprs[15];
@ -191,7 +188,7 @@ badframe:
return 0;
}
asmlinkage long sys_rt_sigreturn(void)
SYSCALL_DEFINE0(rt_sigreturn)
{
struct pt_regs *regs = task_pt_regs(current);
rt_sigframe __user *frame = (rt_sigframe __user *)regs->gprs[15];