Disable preferences menu if the config can't be written.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/lib/config.cc b/src/lib/config.cc
index d7fd74449..e1d5b958d 100644
--- a/src/lib/config.cc
+++ b/src/lib/config.cc
@@ -1201,3 +1201,15 @@ Config::copy_and_link (boost::filesystem::path new_file) const
 	boost::filesystem::copy_file (config_file(), new_file, boost::filesystem::copy_option::overwrite_if_exists);
 	link (new_file);
 }
+
+bool
+Config::have_write_permission () const
+{
+	FILE* f = fopen_boost (config_file(), "r+");
+	if (!f) {
+		return false;
+	}
+
+	fclose (f);
+	return true;
+}