2 files changed, 3 insertions, 3 deletions
diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 336599368009..0a5f796e4eaa 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -288,9 +288,9 @@ string readFile(const Path & path, bool drain)
 }
 
 
-void writeFile(const Path & path, const string & s)
+void writeFile(const Path & path, const string & s, mode_t mode)
 {
-    AutoCloseFD fd = open(path.c_str(), O_WRONLY | O_TRUNC | O_CREAT | O_CLOEXEC, 0666);
+    AutoCloseFD fd = open(path.c_str(), O_WRONLY | O_TRUNC | O_CREAT | O_CLOEXEC, mode);
     if (!fd)
         throw SysError(format("opening file ‘%1%’") % path);
     writeFull(fd.get(), s);
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index cfaaf1486e9e..2950f7daa5ec 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -89,7 +89,7 @@ string readFile(int fd);
 string readFile(const Path & path, bool drain = false);
 
 /* Write a string to a file. */
-void writeFile(const Path & path, const string & s);
+void writeFile(const Path & path, const string & s, mode_t mode = 0666);
 
 /* Read a line from a file descriptor. */
 string readLine(int fd);