config.cc: set exec_file only if arg0 is set

diff --git a/config.cc b/config.cc
index df73e4c..0b2a54c 100644 (file)
--- a/config.cc
+++ b/config.cc
@@ -286,6 +286,7 @@ static bool configParseInternal(struct nsjconf_t* nsjconf, const nsjail::NsJailC
                static std::vector<const char*> argv;
                if (njc.exec_bin().has_arg0()) {
                        argv.push_back(njc.exec_bin().arg0().c_str());
+                       nsjconf->exec_file = njc.exec_bin().path().c_str();
                } else {
                        argv.push_back(njc.exec_bin().path().c_str());
                }
@@ -293,7 +294,6 @@ static bool configParseInternal(struct nsjconf_t* nsjconf, const nsjail::NsJailC
                        argv.push_back(njc.exec_bin().arg(i).c_str());
                }
                argv.push_back(nullptr);
-               nsjconf->exec_file = DUP_IF_SET(njc.exec_bin(), path);
                nsjconf->argv = argv.data();
                nsjconf->use_execveat = njc.exec_bin().exec_fd();
        }