diff --git a/kernel/sys.c b/kernel/sys.c
index d1fe71e..4162d12 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1637,7 +1637,7 @@
 	mask = xchg(&current->fs->umask, mask & S_IRWXUGO);
 	return mask;
 }
-    
+
 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
 			  unsigned long arg4, unsigned long arg5)
 {
@@ -1742,6 +1742,17 @@
 			error = prctl_set_seccomp(arg2);
 			break;
 
+		case PR_CAPBSET_READ:
+			if (!cap_valid(arg2))
+				return -EINVAL;
+			return !!cap_raised(current->cap_bset, arg2);
+		case PR_CAPBSET_DROP:
+#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
+			return cap_prctl_drop(arg2);
+#else
+			return -EINVAL;
+#endif
+
 		default:
 			error = -EINVAL;
 			break;