signal: make sig_ignored() return bool

sig_ignored() already behaves like a boolean function.  Let's actually
declare it as such too.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Christian Brauner <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Eric W. Biederman <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Morris <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephen Smalley <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/kernel/signal.c b/kernel/signal.c
index 6e92adddd6670c07899e55dc8b50e6d1d256a5ab..bcd4272639ca8ee08b7d3001d6633d181fd560f4 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -85,7 +85,7 @@ static bool sig_task_ignored(struct task_struct *t, int sig, bool force)
        return sig_handler_ignored(handler, sig);
 }
 
-static int sig_ignored(struct task_struct *t, int sig, bool force)
+static bool sig_ignored(struct task_struct *t, int sig, bool force)
 {
        /*
         * Blocked signals are never ignored, since the
@@ -93,7 +93,7 @@ static int sig_ignored(struct task_struct *t, int sig, bool force)
         * unblocked.
         */
        if (sigismember(&t->blocked, sig) || sigismember(&t->real_blocked, sig))
-               return 0;
+               return false;
 
        /*
         * Tracers may want to know about even ignored signal unless it
@@ -101,7 +101,7 @@ static int sig_ignored(struct task_struct *t, int sig, bool force)
         * by SIGNAL_UNKILLABLE task.
         */
        if (t->ptrace && sig != SIGKILL)
-               return 0;
+               return false;
 
        return sig_task_ignored(t, sig, force);
 }