From bd6d635a4b91d0607212f97f6405720760fd08b8 Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Mon, 6 Nov 2023 22:47:46 +0200
Subject: [PATCH] sceKernelOpen create directories works

---
 src/core/hle/error_codes.h                    |  5 +++--
 .../hle/libraries/libkernel/file_system.cpp   | 20 +++++++++++++++++--
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/core/hle/error_codes.h b/src/core/hle/error_codes.h
index 3629342f..1e11850b 100644
--- a/src/core/hle/error_codes.h
+++ b/src/core/hle/error_codes.h
@@ -22,5 +22,6 @@ constexpr int SCE_VIDEO_OUT_ERROR_SLOT_OCCUPIED = 0x80290010;         // slot al
 constexpr int SCE_VIDEO_OUT_ERROR_FLIP_QUEUE_FULL = 0x80290012;       // flip queue is full
 constexpr int SCE_VIDEO_OUT_ERROR_INVALID_OPTION = 0x8029001A;        // Invalid buffer attribute option
 
-//filesystem
-constexpr int SCE_KERNEL_ERROR_EMFILE = 0x80020018;//limit of max descriptors reached
+// filesystem
+constexpr int SCE_KERNEL_ERROR_ENOTDIR = 0x80020014;  // Specified file is not a directory
+constexpr int SCE_KERNEL_ERROR_EMFILE = 0x80020018;   // limit of max descriptors reached
diff --git a/src/core/hle/libraries/libkernel/file_system.cpp b/src/core/hle/libraries/libkernel/file_system.cpp
index 58c68746..4511e865 100644
--- a/src/core/hle/libraries/libkernel/file_system.cpp
+++ b/src/core/hle/libraries/libkernel/file_system.cpp
@@ -1,5 +1,5 @@
 #include "core/hle/libraries/libkernel/file_system.h"
-
+#include <filesystem>
 #include "common/debug.h"
 #include "common/log.h"
 #include "common/singleton.h"
@@ -28,9 +28,25 @@ int PS4_SYSV_ABI sceKernelOpen(const char* path, int flags, u16 mode) {
         file->isDirectory = true;
         file->m_guest_name = path;
         file->m_host_name = mnt->getHostDirectory(file->m_guest_name);
+        if (!std::filesystem::is_directory(file->m_host_name)) {  // directory doesn't exist
+            if (create) {                                       // if we have a create flag create it
+                if (std::filesystem::create_directories(file->m_host_name)) {
+                    return handle;
+                } else {
+                    return SCE_KERNEL_ERROR_ENOTDIR;
+                }
+                return SCE_KERNEL_ERROR_ENOTDIR;
+            }
+        } else {
+            if (create) {
+                return handle;//directory already exists
+            } else {
+                BREAKPOINT();//here we should handle open directory mode
+            }
+        }
     }
 
-    return 0;
+    return handle;
 }
 
 int PS4_SYSV_ABI posix_open(const char* path, int flags, /* SceKernelMode*/ u16 mode) {