1 files changed, 17 insertions, 0 deletions

diff --git a/include/linux/signal.h b/include/linux/signal.h
index b63f63eaa39c..5308304993be 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -97,6 +97,23 @@ static inline int sigisemptyset(sigset_t *set)
         }
 }
 
+static inline int sigequalsets(const sigset_t *set1, const sigset_t *set2)
+{
+        switch (_NSIG_WORDS) {
+        case 4:
+                return  (set1->sig[3] == set2->sig[3]) &&
+                        (set1->sig[2] == set2->sig[2]) &&
+                        (set1->sig[1] == set2->sig[1]) &&
+                        (set1->sig[0] == set2->sig[0]);
+        case 2:
+                return  (set1->sig[1] == set2->sig[1]) &&
+                        (set1->sig[0] == set2->sig[0]);
+        case 1:
+                return  set1->sig[0] == set2->sig[0];
+        }
+        return 0;
+}
+
 #define sigmask(sig)    (1UL << ((sig) - 1))
 
 #ifndef __HAVE_ARCH_SIG_SETOPS