From 226ccecd19fb85838a3066ef7c8a51124f80e302 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <steffen.vogel@opal-rt.com>
Date: Tue, 13 Feb 2024 18:06:36 +0000
Subject: [PATCH] Remove usage of std::filesystem

Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>
---
 include/villas/config_class.hpp | 4 ++--
 include/villas/super_node.hpp   | 2 +-
 lib/config.cpp                  | 8 +++++++-
 lib/nodes/fpga.cpp              | 2 +-
 4 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/include/villas/config_class.hpp b/include/villas/config_class.hpp
index a499fcab7..a0b42f268 100644
--- a/include/villas/config_class.hpp
+++ b/include/villas/config_class.hpp
@@ -33,7 +33,7 @@ protected:
   Logger logger;
 
   std::list<std::string> includeDirectories;
-  std::filesystem::path configPath;
+  std::string configPath;
 
   // Check if file exists on local system.
   static bool isLocalFile(const std::string &uri) {
@@ -90,7 +90,7 @@ public:
   json_t *load(const std::string &u, bool resolveIncludes = true,
                bool resolveEnvVars = true);
 
-  std::filesystem::path &getConfigPath() { return configPath; }
+  std::string &getConfigPath() { return configPath; }
 };
 
 } // namespace node
diff --git a/include/villas/super_node.hpp b/include/villas/super_node.hpp
index 709966938..69968ece6 100644
--- a/include/villas/super_node.hpp
+++ b/include/villas/super_node.hpp
@@ -143,7 +143,7 @@ public:
 
   json_t *getConfig() { return config.root; }
 
-  std::filesystem::path &getConfigPath() { return config.getConfigPath(); }
+  std::string &getConfigPath() { return config.getConfigPath(); }
 
   std::string getConfigUri() const { return uri; }
 
diff --git a/lib/config.cpp b/lib/config.cpp
index 45de082d2..f1df13a66 100644
--- a/lib/config.cpp
+++ b/lib/config.cpp
@@ -72,7 +72,13 @@ json_t *Config::load(const std::string &u, bool resolveInc,
 
 FILE *Config::loadFromStdio() {
   logger->info("Reading configuration from standard input");
-  configPath = std::filesystem::current_path();
+
+  auto *cwd = new char[PATH_MAX];
+
+  configPath = getcwd(cwd, PATH_MAX);
+
+  delete[] cwd;
+
   return stdin;
 }
 
diff --git a/lib/nodes/fpga.cpp b/lib/nodes/fpga.cpp
index d85486695..6e0ee2de9 100644
--- a/lib/nodes/fpga.cpp
+++ b/lib/nodes/fpga.cpp
@@ -203,7 +203,7 @@ int FpgaNodeFactory::start(SuperNode *sn) {
   vfioContainer = std::make_shared<kernel::vfio::Container>();
 
   if (cards.empty()) {
-    std::filesystem::path searchPath = sn->getConfigPath().parent_path();
+    std::string searchPath = sn->getConfigPath() + "/..";
     createCards(sn->getConfig(), cards, searchPath);
   }