signal: make get_signal() return bool

make get_signal() 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]>
josf · Aug 22, 2018 · 20ab721 · 20ab721
1 parent f99e9d8
commit 20ab721
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/include/linux/signal.h b/include/linux/signal.h
@@ -265,7 +265,7 @@ extern void set_current_blocked(sigset_t *);
 extern void __set_current_blocked(const sigset_t *);
 extern int show_unhandled_signals;
 
-extern int get_signal(struct ksignal *ksig);
+extern bool get_signal(struct ksignal *ksig);
 extern void signal_setup_done(int failed, struct ksignal *ksig, int stepping);
 extern void exit_signals(struct task_struct *tsk);
 extern void kernel_sigaction(int, __sighandler_t);

diff --git a/kernel/signal.c b/kernel/signal.c
@@ -2287,7 +2287,7 @@ static int ptrace_signal(int signr, siginfo_t *info)
 	return signr;
 }
 
-int get_signal(struct ksignal *ksig)
+bool get_signal(struct ksignal *ksig)
 {
 	struct sighand_struct *sighand = current->sighand;
 	struct signal_struct *signal = current->signal;
@@ -2297,7 +2297,7 @@ int get_signal(struct ksignal *ksig)
 		task_work_run();
 
 	if (unlikely(uprobe_deny_signal()))
-		return 0;
+		return false;
 
 	/*
 	 * Do this once, we can't return to user-mode if freezing() == T.