util: add a function to set umask to 077

Useful to ensure files are written without group/other read rights.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/common/util.cpp b/src/common/util.cpp
index 6f75e5bad..2337f5766 100644
--- a/src/common/util.cpp
+++ b/src/common/util.cpp
@@ -413,4 +413,13 @@ std::string get_nix_version_display_string()
     }
     return false;
   }
+  void set_strict_default_file_permissions(bool strict)
+  {
+#if defined(__MINGW32__) || defined(__MINGW__)
+    // no clue about the odd one out
+#else
+    mode_t mode = strict ? 077 : 0;
+    umask(mode);
+#endif
+  }
 }