some more fopen debugging

src/core/hle/libraries/libc/libc_stdio.cpp

@@ -40,7 +40,7 @@ int PS4_SYSV_ABI vsnprintf(char* s, size_t n, const char* format, VaList* arg) {
 int PS4_SYSV_ABI puts(const char* s) { return std::puts(s); }
 
 FILE* PS4_SYSV_ABI fopen(const char* filename, const char* mode) {
-    LOG_ERROR_IF(log_file_libc, "fopen filename={} , mode ={}\n", filename, mode);
+    LOG_INFO_IF(log_file_libc, "fopen filename={} , mode ={}\n", filename, mode);
     auto* h = Common::Singleton<Core::FileSys::HandleTable>::Instance();
     auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
 
@@ -49,10 +49,13 @@ FILE* PS4_SYSV_ABI fopen(const char* filename, const char* mode) {
     file->m_guest_name = filename;
     file->m_host_name = mnt->getHostFile(file->m_guest_name);
     FILE* f = std::fopen(file->m_host_name.c_str(), mode);
+    if (!f) {
+        LOG_ERROR_IF(log_file_libc, "fopen can't open file={}\n", filename);
+    }
     return f;
 }
 int PS4_SYSV_ABI fclose(FILE* stream) {
-    LOG_ERROR_IF(log_file_libc, "fclose\n");
+    LOG_INFO_IF(log_file_libc, "fclose\n");
     if (stream != nullptr) {
         std::fclose(stream);
     }

src/main.cpp

@@ -17,6 +17,7 @@
 #include "emuTimer.h"
 #include "emulator.h"
 #include <core/hle/libraries/libkernel/thread_management.h>
+#include "core/file_sys/fs.h"
 
 int main(int argc, char* argv[]) {
     if (argc == 1) {
@@ -35,6 +36,10 @@ int main(int argc, char* argv[]) {
     // Argument 1 is the path of self file to boot
     const char* const path = argv[1];
 
+    auto* mnt = Common::Singleton<Core::FileSys::MntPoints>::Instance();
+    std::filesystem::path p = std::string(path);
+    mnt->mount(p.parent_path().string(), "/app0");
+
     auto linker = Common::Singleton<Core::Linker>::Instance();
     Core::Libraries::InitHLELibs(&linker->getHLESymbols());
     linker->LoadModule(path);