Add PID to fuse_context
diff --git a/include/fuse.h b/include/fuse.h
index 22de11b..3c68a8e 100644
--- a/include/fuse.h
+++ b/include/fuse.h
@@ -136,6 +136,7 @@
     struct fuse *fuse;
     uid_t uid;
     gid_t gid;
+    pid_t pid;
 };
 
 #ifdef __cplusplus