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-rw-r--r--include/linux/signal.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 78bfb26..0a98f5e 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -220,6 +220,12 @@ static inline void init_sigpending(struct sigpending *sig)
INIT_LIST_HEAD(&sig->list);
}
+/* Test if 'sig' is valid signal. Use this instead of testing _NSIG directly */
+static inline int valid_signal(unsigned long sig)
+{
+ return sig <= _NSIG ? 1 : 0;
+}
+
extern int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p);
extern int __group_send_sig_info(int, struct siginfo *, struct task_struct *);
extern long do_sigpending(void __user *, unsigned long);
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