guard against invalid database files

1 files changed, 9 insertions, 1 deletions

diff --git a/src/mbgl/util/io.cpp b/src/mbgl/util/io.cpp
index 76f7c35ade..bb4c3595c3 100644
--- a/src/mbgl/util/io.cpp
+++ b/src/mbgl/util/io.cpp
@@ -4,7 +4,8 @@
 #include <iostream>
 #include <sstream>
 #include <fstream>
-#include <stdexcept>
+
+#include <unistd.h>
 
 namespace mbgl {
 namespace util {
@@ -30,5 +31,12 @@ std::string read_file(const std::string &filename) {
     }
 }
 
+void deleteFile(const std::string& filename) {
+    const int ret = unlink(filename.c_str());
+    if (ret == -1) {
+        throw IOException(errno, "failed to unlink file");
+    }
+}
+
 }
 }