[CVE-2009-0029] Convert all system calls to return a long
Convert all system calls to return a long. This should be a NOP since all
converted types should have the same size anyway.
With the exception of sys_exit_group which returned void. But that doesn't
matter since the system call doesn't return.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/kernel/exit.c b/kernel/exit.c
index c7740fa..fac9b04 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1182,9 +1182,11 @@
* wait4()-ing process will get the correct exit code - even if this
* thread is not the thread group leader.
*/
-asmlinkage void sys_exit_group(int error_code)
+asmlinkage long sys_exit_group(int error_code)
{
do_group_exit((error_code & 0xff) << 8);
+ /* NOTREACHED */
+ return 0;
}
static struct pid *task_pid_type(struct task_struct *task, enum pid_type type)
diff --git a/kernel/signal.c b/kernel/signal.c
index 3152ac3..856a547 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2559,7 +2559,7 @@
/*
* For backwards compatibility. Functionality superseded by sigaction.
*/
-asmlinkage unsigned long
+asmlinkage long
sys_signal(int sig, __sighandler_t handler)
{
struct k_sigaction new_sa, old_sa;
diff --git a/kernel/timer.c b/kernel/timer.c
index dee3f64..7b8697d 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1129,7 +1129,7 @@
* For backwards compatibility? This can be done in libc so Alpha
* and all newer ports shouldn't need it.
*/
-asmlinkage unsigned long sys_alarm(unsigned int seconds)
+asmlinkage long sys_alarm(unsigned int seconds)
{
return alarm_setitimer(seconds);
}
