[PATCH v1 15/20] signal: make unhandled_signal() return bool

[Christian Brauner]

unhandled_signal() already behaves like a boolean function. Let's actually
declare it as such too.
All callers treat it as such too.

Signed-off-by: Christian Brauner <christ...@brauner.io>
---
v0->v1:
* patch introduced
---
 include/linux/signal.h |  2 +-
 kernel/signal.c        | 11 +++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/include/linux/signal.h b/include/linux/signal.h
index a9bc7e1b077e..1145d7061ed9 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -284,7 +284,7 @@ static inline void disallow_signal(int sig)
 
 extern struct kmem_cache *sighand_cachep;
 
-int unhandled_signal(struct task_struct *tsk, int sig);
+extern bool unhandled_signal(struct task_struct *tsk, int sig);
 
 /*
  * In POSIX a signal is sent either to a specific thread (Linux task)
diff --git a/kernel/signal.c b/kernel/signal.c
index 623039987546..c382ac346a81 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -508,13 +508,16 @@ flush_signal_handlers(struct task_struct *t, int 
force_default)
        }
 }
 
-int unhandled_signal(struct task_struct *tsk, int sig)
+bool unhandled_signal(struct task_struct *tsk, int sig)
 {
-       void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;
+       void __user *handler = tsk->sighand->action[sig - 1].sa.sa_handler;
+
        if (is_global_init(tsk))
-               return 1;
+               return true;
+
        if (handler != SIG_IGN && handler != SIG_DFL)
-               return 0;
+               return false;
+
        /* if ptraced, let the tracer determine */
        return !tsk->ptrace;
 }
-- 
2.17.0