Add extra checks in for file handle lookup

src/dirinfo.hpp

@@ -18,6 +18,7 @@
 
 #pragma once
 
+#include "assert.hpp"
 #include "fh.hpp"
 
 #include "base_types.h"

src/fuse_ftruncate.cpp

@@ -55,6 +55,9 @@ FUSE::ftruncate(const fuse_req_ctx_t *ctx_,
                               });
     }
 
+  if(fh == 0)
+    return -ENOENT;
+
   FileInfo *fi = FileInfo::from_fh(fh);
 
   return ::_ftruncate(fi->fd,size_);

src/fuse_futimens.cpp

@@ -57,6 +57,9 @@ FUSE::futimens(const fuse_req_ctx_t  *ctx_,
                               });
     }
 
+  if(fh == 0)
+    return -ENOENT;
+
   FileInfo *fi = FileInfo::from_fh(fh);
 
   return ::_futimens(fi->fd,ts_);