From 0c705c10cb06f27ce353f8905c96a771a6505ecd Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Mon, 3 Jun 2024 20:37:44 +0300
Subject: [PATCH] some WIP directory work on sceKernelOpen

---
 src/core/file_sys/fs.cpp                  | 15 +++++++--------
 src/core/libraries/kernel/file_system.cpp | 23 +++++++++++++++++------
 2 files changed, 24 insertions(+), 14 deletions(-)

diff --git a/src/core/file_sys/fs.cpp b/src/core/file_sys/fs.cpp
index dd580e04..54e96f7a 100644
--- a/src/core/file_sys/fs.cpp
+++ b/src/core/file_sys/fs.cpp
@@ -29,16 +29,15 @@ void MntPoints::UnmountAll() {
 
 std::string MntPoints::GetHostDirectory(const std::string& guest_directory) {
     std::scoped_lock lock{m_mutex};
+
     for (auto& pair : m_mnt_pairs) {
-        if (pair.guest_path.starts_with(guest_directory)) {
-            return pair.host_path + guest_directory;
-        }
-    }
-    // hack for relative path , get app0 and assuming it goes from there
-    for (auto& pair : m_mnt_pairs) {
-        if (pair.guest_path.starts_with("/app0")) {
+        // horrible code but it works :D
+        int find = guest_directory.find(pair.guest_path);
+        if (find == 0) {
+            std::string npath =
+                guest_directory.substr(pair.guest_path.size(), guest_directory.size() - 1);
             std::replace(pair.host_path.begin(), pair.host_path.end(), '\\', '/');
-            return pair.host_path + guest_directory;
+            return pair.host_path + npath;
         }
     }
     return "";
diff --git a/src/core/libraries/kernel/file_system.cpp b/src/core/libraries/kernel/file_system.cpp
index 999251bf..1dec459d 100644
--- a/src/core/libraries/kernel/file_system.cpp
+++ b/src/core/libraries/kernel/file_system.cpp
@@ -31,11 +31,23 @@ int PS4_SYSV_ABI sceKernelOpen(const char* path, int flags, u16 mode) {
     bool direct = (flags & ORBIS_KERNEL_O_DIRECT) != 0;
     bool directory = (flags & ORBIS_KERNEL_O_DIRECTORY) != 0;
 
+    u32 handle = h->CreateHandle();
+    auto* file = h->GetFile(handle);
     if (directory) {
-        UNREACHABLE(); // not supported yet
+        file->is_directory = 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
+            UNREACHABLE();                                       // not supported yet
+        } else {
+            if (create) {
+                return handle; // dir already exists
+            } else {
+                // get dirents TODO
+                file->dirents_index = 0;
+            }
+        }
     } else {
-        u32 handle = h->CreateHandle();
-        auto* file = h->GetFile(handle);
         file->m_guest_name = path;
         file->m_host_name = mnt->GetHostFile(file->m_guest_name);
         if (read) {
@@ -49,10 +61,9 @@ int PS4_SYSV_ABI sceKernelOpen(const char* path, int flags, u16 mode) {
             h->DeleteHandle(handle);
             return SCE_KERNEL_ERROR_EACCES;
         }
-        file->is_opened = true;
-        return handle;
     }
-    return -1; // dummy
+    file->is_opened = true;
+    return handle;
 }
 
 int PS4_SYSV_ABI posix_open(const char* path, int flags, /* SceKernelMode*/ u16 mode) {