Reworking file system so that it's easier to implement file operations.

src/xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_device.cc

@@ -10,6 +10,7 @@
 #include <xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_device.h>
 
 #include <xenia/kernel/modules/xboxkrnl/fs/gdfx.h>
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_entry.h>
 
 
 using namespace xe;
@@ -17,62 +18,6 @@ using namespace xe::kernel;
 using namespace xe::kernel::xboxkrnl::fs;
 
 
-namespace {
-
-
-class DiscImageMemoryMapping : public MemoryMapping {
-public:
-  DiscImageMemoryMapping(uint8_t* address, size_t length, xe_mmap_ref mmap) :
-      MemoryMapping(address, length) {
-    mmap_ = xe_mmap_retain(mmap);
-  }
-
-  virtual ~DiscImageMemoryMapping() {
-    xe_mmap_release(mmap_);
-  }
-
-private:
-  xe_mmap_ref mmap_;
-};
-
-
-class DiscImageFileEntry : public FileEntry {
-public:
-  DiscImageFileEntry(Device* device, const char* path,
-                     xe_mmap_ref mmap, GDFXEntry* gdfx_entry) :
-      FileEntry(device, path),
-      gdfx_entry_(gdfx_entry) {
-    mmap_ = xe_mmap_retain(mmap);
-  }
-
-  virtual ~DiscImageFileEntry() {
-    xe_mmap_release(mmap_);
-  }
-
-  virtual MemoryMapping* CreateMemoryMapping(
-      xe_file_mode file_mode, const size_t offset, const size_t length) {
-    if (file_mode & kXEFileModeWrite) {
-      // Only allow reads.
-      return NULL;
-    }
-
-    size_t real_offset = gdfx_entry_->offset + offset;
-    size_t real_length = length ?
-        MIN(length, gdfx_entry_->size) : gdfx_entry_->size;
-    return new DiscImageMemoryMapping(
-        xe_mmap_get_addr(mmap_) + real_offset,
-        real_length,
-        mmap_);
-  }
-
-private:
-  xe_mmap_ref mmap_;
-  GDFXEntry*  gdfx_entry_;
-};
-
-
-}
-
 
 DiscImageDevice::DiscImageDevice(const char* path, const xechar_t* local_path) :
     Device(path) {
@@ -146,11 +91,8 @@ Entry* DiscImageDevice::ResolvePath(const char* path) {
     XEIGNORE(xestrcpya(remaining, XECOUNT(remaining), next_slash + 1));
   }
 
-  if (gdfx_entry->attributes & GDFXEntry::kAttrFolder) {
-    //return new DiscImageDirectoryEntry(mmap_, gdfx_entry);
-    XEASSERTALWAYS();
-    return NULL;
-  } else {
-    return new DiscImageFileEntry(this, path, mmap_, gdfx_entry);
-  }
+  Entry::Type type = gdfx_entry->attributes & GDFXEntry::kAttrFolder ?
+      Entry::kTypeDirectory : Entry::kTypeFile;
+  return new DiscImageEntry(
+      type, this, path, mmap_, gdfx_entry);
 }

src/xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_entry.cc

@@ -0,0 +1,84 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_entry.h>
+
+#include <xenia/kernel/modules/xboxkrnl/fs/gdfx.h>
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_file.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xboxkrnl;
+using namespace xe::kernel::xboxkrnl::fs;
+
+
+namespace {
+
+
+class DiscImageMemoryMapping : public MemoryMapping {
+public:
+  DiscImageMemoryMapping(uint8_t* address, size_t length, xe_mmap_ref mmap) :
+      MemoryMapping(address, length) {
+    mmap_ = xe_mmap_retain(mmap);
+  }
+
+  virtual ~DiscImageMemoryMapping() {
+    xe_mmap_release(mmap_);
+  }
+
+private:
+  xe_mmap_ref mmap_;
+};
+
+
+}
+
+
+DiscImageEntry::DiscImageEntry(Type type, Device* device, const char* path,
+                               xe_mmap_ref mmap, GDFXEntry* gdfx_entry) :
+    gdfx_entry_(gdfx_entry),
+    Entry(type, device, path) {
+  mmap_ = xe_mmap_retain(mmap);
+}
+
+DiscImageEntry::~DiscImageEntry() {
+  xe_mmap_release(mmap_);
+}
+
+MemoryMapping* DiscImageEntry::CreateMemoryMapping(
+    xe_file_mode file_mode, const size_t offset, const size_t length) {
+  if (file_mode & kXEFileModeWrite) {
+    // Only allow reads.
+    return NULL;
+  }
+
+  size_t real_offset = gdfx_entry_->offset + offset;
+  size_t real_length = length ?
+      MIN(length, gdfx_entry_->size) : gdfx_entry_->size;
+  return new DiscImageMemoryMapping(
+      xe_mmap_get_addr(mmap_) + real_offset,
+      real_length,
+      mmap_);
+}
+
+X_STATUS DiscImageEntry::Open(
+    KernelState* kernel_state,
+    /* mode etc */
+    XFile** out_file) {
+  //*out_file = new DiscImageFile...
+  return X_STATUS_NOT_IMPLEMENTED;
+}
+/*    size_t real_offset = gdfx_entry_->offset + byte_offset;
+    size_t real_length = MIN(buffer_length, gdfx_entry_->size - byte_offset);
+    xe_copy_memory(
+        buffer, buffer_length,
+        xe_mmap_get_addr(mmap_) + real_offset, real_length);
+    *out_bytes_read = real_length;
+    return X_STATUS_SUCCESS;*/

src/xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_entry.h

@@ -0,0 +1,53 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_DISC_IMAGE_ENTRY_H_
+#define XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_DISC_IMAGE_ENTRY_H_
+
+#include <xenia/common.h>
+#include <xenia/core.h>
+
+#include <xenia/kernel/modules/xboxkrnl/fs/entry.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xboxkrnl {
+namespace fs {
+
+class GDFXEntry;
+
+
+class DiscImageEntry : public Entry {
+public:
+  DiscImageEntry(Type type, Device* device, const char* path,
+                 xe_mmap_ref mmap, GDFXEntry* gdfx_entry);
+  virtual ~DiscImageEntry();
+
+  virtual MemoryMapping* CreateMemoryMapping(
+      xe_file_mode file_mode, const size_t offset, const size_t length);
+
+  virtual X_STATUS Open(
+      KernelState* kernel_state,
+      /* mode etc */
+      XFile** out_file);
+
+private:
+  xe_mmap_ref mmap_;
+  GDFXEntry*  gdfx_entry_;
+};
+
+
+}  // namespace fs
+}  // namespace xboxkrnl
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_DISC_IMAGE_ENTRY_H_

src/xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_file.cc

@@ -0,0 +1,27 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_file.h>
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_entry.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xboxkrnl;
+using namespace xe::kernel::xboxkrnl::fs;
+
+
+DiscImageFile::DiscImageFile(KernelState* kernel_state, DiscImageEntry* entry) :
+    entry_(entry),
+    XFile(kernel_state) {
+}
+
+DiscImageFile::~DiscImageFile() {
+}

src/xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_file.h

@@ -0,0 +1,43 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_DISC_IMAGE_FILE_H_
+#define XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_DISC_IMAGE_FILE_H_
+
+#include <xenia/common.h>
+#include <xenia/core.h>
+
+#include <xenia/kernel/modules/xboxkrnl/objects/xfile.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xboxkrnl {
+namespace fs {
+
+class DiscImageEntry;
+
+
+class DiscImageFile : public XFile {
+public:
+  DiscImageFile(KernelState* kernel_state, DiscImageEntry* entry);
+  virtual ~DiscImageFile();
+
+private:
+  DiscImageEntry* entry_;
+};
+
+
+}  // namespace fs
+}  // namespace xboxkrnl
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_DISC_IMAGE_FILE_H_

src/xenia/kernel/modules/xboxkrnl/fs/devices/host_path_device.cc

@@ -0,0 +1,65 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/host_path_device.h>
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/host_path_entry.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xboxkrnl::fs;
+
+
+HostPathDevice::HostPathDevice(const char* path, const xechar_t* local_path) :
+    Device(path) {
+  local_path_ = xestrdup(local_path);
+}
+
+HostPathDevice::~HostPathDevice() {
+  xe_free(local_path_);
+}
+
+Entry* HostPathDevice::ResolvePath(const char* path) {
+  // The filesystem will have stripped our prefix off already, so the path will
+  // be in the form:
+  // some\PATH.foo
+
+  XELOGFS("HostPathDevice::ResolvePath(%s)", path);
+
+#if XE_WCHAR
+  xechar_t rel_path[XE_MAX_PATH];
+  XEIGNORE(xestrwiden(rel_path, XECOUNT(rel_path), path));
+#else
+  const xechar_t* rel_path = path;
+#endif
+
+  xechar_t full_path[XE_MAX_PATH];
+  xe_path_join(local_path_, rel_path, full_path, XECOUNT(full_path));
+
+  // Swap around path separators.
+  if (XE_PATH_SEPARATOR != '\\') {
+    for (size_t n = 0; n < XECOUNT(full_path); n++) {
+      if (full_path[n] == 0) {
+        break;
+      }
+      if (full_path[n] == '\\') {
+        full_path[n] = XE_PATH_SEPARATOR;
+      }
+    }
+  }
+
+  // TODO(benvanik): get file info
+  // TODO(benvanik): fail if does not exit
+  // TODO(benvanik): switch based on type
+
+  Entry::Type type = Entry::kTypeFile;
+  HostPathEntry* entry = new HostPathEntry(type, this, path, full_path);
+  return entry;
+}

src/xenia/kernel/modules/xboxkrnl/fs/devices/host_path_device.h

@@ -7,8 +7,8 @@
  ******************************************************************************
  */
 
-#ifndef XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_LOCAL_DIRECTORY_DEVICE_H_
-#define XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_LOCAL_DIRECTORY_DEVICE_H_
+#ifndef XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_DEVICE_H_
+#define XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_DEVICE_H_
 
 #include <xenia/common.h>
 #include <xenia/core.h>
@@ -22,10 +22,10 @@ namespace xboxkrnl {
 namespace fs {
 
 
-class LocalDirectoryDevice : public Device {
+class HostPathDevice : public Device {
 public:
-  LocalDirectoryDevice(const char* path, const xechar_t* local_path);
-  virtual ~LocalDirectoryDevice();
+  HostPathDevice(const char* path, const xechar_t* local_path);
+  virtual ~HostPathDevice();
 
   virtual Entry* ResolvePath(const char* path);
 
@@ -40,4 +40,4 @@ private:
 }  // namespace xe
 
 
-#endif  // XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_LOCAL_DIRECTORY_DEVICE_H_
+#endif  // XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_DEVICE_H_

src/xenia/kernel/modules/xboxkrnl/fs/devices/host_path_entry.cc

@@ -0,0 +1,71 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/host_path_entry.h>
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/host_path_file.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xboxkrnl;
+using namespace xe::kernel::xboxkrnl::fs;
+
+
+namespace {
+
+
+class HostPathMemoryMapping : public MemoryMapping {
+public:
+  HostPathMemoryMapping(uint8_t* address, size_t length, xe_mmap_ref mmap) :
+      MemoryMapping(address, length) {
+    mmap_ = xe_mmap_retain(mmap);
+  }
+  virtual ~HostPathMemoryMapping() {
+    xe_mmap_release(mmap_);
+  }
+private:
+  xe_mmap_ref mmap_;
+};
+
+
+}
+
+
+HostPathEntry::HostPathEntry(Type type, Device* device, const char* path,
+                     const xechar_t* local_path) :
+    Entry(type, device, path) {
+  local_path_ = xestrdup(local_path);
+}
+
+HostPathEntry::~HostPathEntry() {
+  xe_free(local_path_);
+}
+
+MemoryMapping* HostPathEntry::CreateMemoryMapping(
+    xe_file_mode file_mode, const size_t offset, const size_t length) {
+  xe_mmap_ref mmap = xe_mmap_open(file_mode, local_path_, offset, length);
+  if (!mmap) {
+    return NULL;
+  }
+
+  HostPathMemoryMapping* lfmm = new HostPathMemoryMapping(
+      (uint8_t*)xe_mmap_get_addr(mmap), xe_mmap_get_length(mmap),
+      mmap);
+  xe_mmap_release(mmap);
+
+  return lfmm;
+}
+
+X_STATUS HostPathEntry::Open(
+    KernelState* kernel_state,
+    XFile** out_file) {
+  //*out_file = new DiscImageFile...
+  return X_STATUS_NOT_IMPLEMENTED;
+}

src/xenia/kernel/modules/xboxkrnl/fs/devices/host_path_entry.h

@@ -0,0 +1,51 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_ENTRY_H_
+#define XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_ENTRY_H_
+
+#include <xenia/common.h>
+#include <xenia/core.h>
+
+#include <xenia/kernel/modules/xboxkrnl/fs/entry.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xboxkrnl {
+namespace fs {
+
+
+class HostPathEntry : public Entry {
+public:
+  HostPathEntry(Type type, Device* device, const char* path,
+            const xechar_t* local_path);
+  virtual ~HostPathEntry();
+
+  const xechar_t* local_path() { return local_path_; }
+
+  virtual MemoryMapping* CreateMemoryMapping(
+      xe_file_mode file_mode, const size_t offset, const size_t length);
+
+  virtual X_STATUS Open(
+      KernelState* kernel_state,
+      XFile** out_file);
+
+private:
+  xechar_t*   local_path_;
+};
+
+
+}  // namespace fs
+}  // namespace xboxkrnl
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_ENTRY_H_

src/xenia/kernel/modules/xboxkrnl/fs/devices/host_path_file.cc

@@ -0,0 +1,27 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/host_path_file.h>
+
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/host_path_entry.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xboxkrnl;
+using namespace xe::kernel::xboxkrnl::fs;
+
+
+HostPathFile::HostPathFile(KernelState* kernel_state, HostPathEntry* entry) :
+    entry_(entry),
+    XFile(kernel_state) {
+}
+
+HostPathFile::~HostPathFile() {
+}

src/xenia/kernel/modules/xboxkrnl/fs/devices/host_path_file.h

@@ -0,0 +1,43 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_FILE_H_
+#define XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_FILE_H_
+
+#include <xenia/common.h>
+#include <xenia/core.h>
+
+#include <xenia/kernel/modules/xboxkrnl/objects/xfile.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xboxkrnl {
+namespace fs {
+
+class HostPathEntry;
+
+
+class HostPathFile : public XFile {
+public:
+  HostPathFile(KernelState* kernel_state, HostPathEntry* entry);
+  virtual ~HostPathFile();
+
+private:
+  HostPathEntry* entry_;
+};
+
+
+}  // namespace fs
+}  // namespace xboxkrnl
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_MODULES_XBOXKRNL_FS_DEVICES_HOST_PATH_FILE_H_

src/xenia/kernel/modules/xboxkrnl/fs/devices/local_directory_device.cc

@@ -1,115 +0,0 @@
-/**
- ******************************************************************************
- * Xenia : Xbox 360 Emulator Research Project                                 *
- ******************************************************************************
- * Copyright 2013 Ben Vanik. All rights reserved.                             *
- * Released under the BSD license - see LICENSE in the root for more details. *
- ******************************************************************************
- */
-
-#include <xenia/kernel/modules/xboxkrnl/fs/devices/local_directory_device.h>
-
-
-using namespace xe;
-using namespace xe::kernel;
-using namespace xe::kernel::xboxkrnl::fs;
-
-
-namespace {
-
-
-class LocalFileMemoryMapping : public MemoryMapping {
-public:
-  LocalFileMemoryMapping(uint8_t* address, size_t length, xe_mmap_ref mmap) :
-      MemoryMapping(address, length) {
-    mmap_ = xe_mmap_retain(mmap);
-  }
-  virtual ~LocalFileMemoryMapping() {
-    xe_mmap_release(mmap_);
-  }
-private:
-  xe_mmap_ref mmap_;
-};
-
-
-class LocalFileEntry : public FileEntry {
-public:
-  LocalFileEntry(Device* device, const char* path, const xechar_t* local_path) :
-      FileEntry(device, path) {
-    local_path_ = xestrdup(local_path);
-  }
-  virtual ~LocalFileEntry() {
-    xe_free(local_path_);
-  }
-
-  const xechar_t* local_path() { return local_path_; }
-
-  virtual MemoryMapping* CreateMemoryMapping(
-      xe_file_mode file_mode, const size_t offset, const size_t length) {
-    xe_mmap_ref mmap = xe_mmap_open(file_mode, local_path_, offset, length);
-    if (!mmap) {
-      return NULL;
-    }
-
-    LocalFileMemoryMapping* lfmm = new LocalFileMemoryMapping(
-        (uint8_t*)xe_mmap_get_addr(mmap), xe_mmap_get_length(mmap),
-        mmap);
-    xe_mmap_release(mmap);
-
-    return lfmm;
-  }
-
-private:
-  xechar_t*   local_path_;
-};
-
-
-}
-
-
-LocalDirectoryDevice::LocalDirectoryDevice(const char* path,
-                                           const xechar_t* local_path) :
-    Device(path) {
-  local_path_ = xestrdup(local_path);
-}
-
-LocalDirectoryDevice::~LocalDirectoryDevice() {
-  xe_free(local_path_);
-}
-
-Entry* LocalDirectoryDevice::ResolvePath(const char* path) {
-  // The filesystem will have stripped our prefix off already, so the path will
-  // be in the form:
-  // some\PATH.foo
-
-  XELOGFS("LocalDirectoryDevice::ResolvePath(%s)", path);
-
-#if XE_WCHAR
-  xechar_t rel_path[XE_MAX_PATH];
-  XEIGNORE(xestrwiden(rel_path, XECOUNT(rel_path), path));
-#else
-  const xechar_t* rel_path = path;
-#endif
-
-  xechar_t full_path[XE_MAX_PATH];
-  xe_path_join(local_path_, rel_path, full_path, XECOUNT(full_path));
-
-  // Swap around path separators.
-  if (XE_PATH_SEPARATOR != '\\') {
-    for (size_t n = 0; n < XECOUNT(full_path); n++) {
-      if (full_path[n] == 0) {
-        break;
-      }
-      if (full_path[n] == '\\') {
-        full_path[n] = XE_PATH_SEPARATOR;
-      }
-    }
-  }
-
-  // TODO(benvanik): get file info
-  // TODO(benvanik): fail if does not exit
-  // TODO(benvanik): switch based on type
-
-  LocalFileEntry* file_entry = new LocalFileEntry(this, path, full_path);
-  return file_entry;
-}

src/xenia/kernel/modules/xboxkrnl/fs/devices/sources.gypi

@@ -3,7 +3,15 @@
   'sources': [
     'disc_image_device.cc',
     'disc_image_device.h',
-    'local_directory_device.cc',
-    'local_directory_device.h',
+    'disc_image_entry.cc',
+    'disc_image_entry.h',
+    'disc_image_file.cc',
+    'disc_image_file.h',
+    'host_path_device.cc',
+    'host_path_device.h',
+    'host_path_entry.cc',
+    'host_path_entry.h',
+    'host_path_file.cc',
+    'host_path_file.h',
   ],
 }

src/xenia/kernel/modules/xboxkrnl/fs/entry.cc

@@ -15,6 +15,14 @@ using namespace xe::kernel;
 using namespace xe::kernel::xboxkrnl::fs;
 
 
+MemoryMapping::MemoryMapping(uint8_t* address, size_t length) :
+    address_(address), length_(length) {
+}
+
+MemoryMapping::~MemoryMapping() {
+}
+
+
 Entry::Entry(Type type, Device* device, const char* path) :
     type_(type),
     device_(device) {
@@ -27,51 +35,3 @@ Entry::~Entry() {
   xe_free(path_);
   xe_free(name_);
 }
-
-Entry::Type Entry::type() {
-  return type_;
-}
-
-Device* Entry::device() {
-  return device_;
-}
-
-const char* Entry::path() {
-  return path_;
-}
-
-const char* Entry::name() {
-  return name_;
-}
-
-
-MemoryMapping::MemoryMapping(uint8_t* address, size_t length) :
-    address_(address), length_(length) {
-}
-
-MemoryMapping::~MemoryMapping() {
-}
-
-uint8_t* MemoryMapping::address() {
-  return address_;
-}
-
-size_t MemoryMapping::length() {
-  return length_;
-}
-
-
-FileEntry::FileEntry(Device* device, const char* path) :
-    Entry(kTypeFile, device, path) {
-}
-
-FileEntry::~FileEntry() {
-}
-
-
-DirectoryEntry::DirectoryEntry(Device* device, const char* path) :
-    Entry(kTypeDirectory, device, path) {
-}
-
-DirectoryEntry::~DirectoryEntry() {
-}

src/xenia/kernel/modules/xboxkrnl/fs/entry.h

@@ -19,15 +19,27 @@
 namespace xe {
 namespace kernel {
 namespace xboxkrnl {
-
-class XAsyncRequest;
-
+class KernelState;
+class XFile;
 namespace fs {
 
-
 class Device;
 
 
+class MemoryMapping {
+public:
+  MemoryMapping(uint8_t* address, size_t length);
+  virtual ~MemoryMapping();
+
+  uint8_t* address() const { return address_; }
+  size_t length() const { return length_; }
+
+private:
+  uint8_t*    address_;
+  size_t      length_;
+};
+
+
 class Entry {
 public:
   enum Type {
@@ -38,10 +50,17 @@ public:
   Entry(Type type, Device* device, const char* path);
   virtual ~Entry();
 
-  Type type();
-  Device* device();
-  const char* path();
-  const char* name();
+  Type type() const { return type_; }
+  Device* device() const { return device_; }
+  const char* path() const { return path_; }
+  const char* name() const { return name_; }
+
+  virtual MemoryMapping* CreateMemoryMapping(
+      xe_file_mode file_mode, const size_t offset, const size_t length) = 0;
+
+  virtual X_STATUS Open(
+      KernelState* kernel_state,
+      XFile** out_file) = 0;
 
 private:
   Type      type_;
@@ -51,51 +70,6 @@ private:
 };
 
 
-class MemoryMapping {
-public:
-  MemoryMapping(uint8_t* address, size_t length);
-  virtual ~MemoryMapping();
-
-  uint8_t* address();
-  size_t length();
-
-private:
-  uint8_t*    address_;
-  size_t      length_;
-};
-
-
-class FileEntry : public Entry {
-public:
-  FileEntry(Device* device, const char* path);
-  virtual ~FileEntry();
-
-  //virtual void Query() = 0;
-
-  X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
-                size_t* out_bytes_read) {
-    return X_STATUS_NOT_IMPLEMENTED;
-  }
-  X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
-                XAsyncRequest* request) {
-    // queue completion of failure
-    return X_STATUS_NOT_IMPLEMENTED;
-  }
-
-  virtual MemoryMapping* CreateMemoryMapping(
-      xe_file_mode file_mode, const size_t offset, const size_t length) = 0;
-};
-
-
-class DirectoryEntry : public Entry {
-public:
-  DirectoryEntry(Device* device, const char* path);
-  virtual ~DirectoryEntry();
-
-  //virtual void Query() = 0;
-};
-
-
 }  // namespace fs
 }  // namespace xboxkrnl
 }  // namespace kernel

src/xenia/kernel/modules/xboxkrnl/fs/filesystem.cc

@@ -10,7 +10,7 @@
 #include <xenia/kernel/modules/xboxkrnl/fs/filesystem.h>
 
 #include <xenia/kernel/modules/xboxkrnl/fs/devices/disc_image_device.h>
-#include <xenia/kernel/modules/xboxkrnl/fs/devices/local_directory_device.h>
+#include <xenia/kernel/modules/xboxkrnl/fs/devices/host_path_device.h>
 
 
 using namespace xe;
@@ -37,9 +37,9 @@ int FileSystem::RegisterDevice(const char* path, Device* device) {
   return 0;
 }
 
-int FileSystem::RegisterLocalDirectoryDevice(
+int FileSystem::RegisterHostPathDevice(
     const char* path, const xechar_t* local_path) {
-  Device* device = new LocalDirectoryDevice(path, local_path);
+  Device* device = new HostPathDevice(path, local_path);
   return RegisterDevice(path, device);
 }
 

src/xenia/kernel/modules/xboxkrnl/fs/filesystem.h

@@ -33,8 +33,7 @@ public:
   ~FileSystem();
 
   int RegisterDevice(const char* path, Device* device);
-  int RegisterLocalDirectoryDevice(const char* path,
-                                   const xechar_t* local_path);
+  int RegisterHostPathDevice(const char* path, const xechar_t* local_path);
   int RegisterDiscImageDevice(const char* path, const xechar_t* local_path);
 
   int CreateSymbolicLink(const char* path, const char* target);

src/xenia/kernel/modules/xboxkrnl/object_table.cc

@@ -174,7 +174,9 @@ X_STATUS ObjectTable::GetObject(X_HANDLE handle, XObject** out_object) {
   }
 
   // Retain the object pointer.
-  object->Retain();
+  if (object) {
+    object->Retain();
+  }
 
   xe_mutex_unlock(table_mutex_);
 

src/xenia/kernel/modules/xboxkrnl/objects/xfile.cc

@@ -10,18 +10,15 @@
 #include <xenia/kernel/modules/xboxkrnl/objects/xfile.h>
 
 #include <xenia/kernel/modules/xboxkrnl/async_request.h>
-#include <xenia/kernel/modules/xboxkrnl/fs/entry.h>
 #include <xenia/kernel/modules/xboxkrnl/objects/xevent.h>
 
 
 using namespace xe;
 using namespace xe::kernel;
 using namespace xe::kernel::xboxkrnl;
-using namespace xe::kernel::xboxkrnl::fs;
 
 
-XFile::XFile(KernelState* kernel_state, FileEntry* entry) :
-    entry_(entry),
+XFile::XFile(KernelState* kernel_state) :
     position_(0),
     XObject(kernel_state, kTypeFile) {
   async_event_ = new XEvent(kernel_state);
@@ -33,7 +30,7 @@ XFile::~XFile() {
   async_event_->Set(0, false);
   async_event_->Delete();
 }
-
+
 X_STATUS XFile::Wait(uint32_t wait_reason, uint32_t processor_mode,
                      uint32_t alertable, uint64_t* opt_timeout) {
   // Wait until some async operation completes.
@@ -46,10 +43,11 @@ X_STATUS XFile::Read(void* buffer, size_t buffer_length, size_t byte_offset,
   if (byte_offset == -1) {
     // Read from current position.
   }
-  X_STATUS result = entry_->Read(buffer, buffer_length, byte_offset, out_bytes_read);
-  if (XSUCCEEDED(result)) {
-    position_ += *out_bytes_read;
-  }
+  // X_STATUS result = entry_->Read(buffer, buffer_length, byte_offset, out_bytes_read);
+  // if (XSUCCEEDED(result)) {
+  //   position_ += *out_bytes_read;
+  // }
+  X_STATUS result = X_STATUS_NOT_IMPLEMENTED;
   return result;
 }
 
@@ -58,5 +56,7 @@ X_STATUS XFile::Read(void* buffer, size_t buffer_length, size_t byte_offset,
   // Also tack on our event so that any waiters wake.
   request->AddWaitEvent(async_event_);
   position_ = byte_offset;
-  return entry_->Read(buffer, buffer_length, byte_offset, request);
+  //return entry_->Read(buffer, buffer_length, byte_offset, request);
+  X_STATUS result = X_STATUS_NOT_IMPLEMENTED;
+  return result;
 }

src/xenia/kernel/modules/xboxkrnl/objects/xfile.h

@@ -21,16 +21,13 @@ namespace xboxkrnl {
 
 class XAsyncRequest;
 class XEvent;
-namespace fs {
-class FileEntry;
-}
 
 
 class XFile : public XObject {
 public:
-  XFile(KernelState* kernel_state, fs::FileEntry* entry);
-  virtual ~XFile();
-
+  XFile(KernelState* kernel_state);
+  virtual ~XFile();
+
   virtual X_STATUS Wait(uint32_t wait_reason, uint32_t processor_mode,
                         uint32_t alertable, uint64_t* opt_timeout);
 
@@ -41,8 +38,10 @@ public:
   X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
                 XAsyncRequest* request);
 
+protected:
+  // open/read/write/etc
+
 private:
-  fs::FileEntry*  entry_;
   XEvent*         async_event_;
 
   // TODO(benvanik): create flags, open state, etc.

src/xenia/kernel/modules/xboxkrnl/objects/xmodule.cc

@@ -68,10 +68,9 @@ X_STATUS XModule::LoadFromFile(const char* path) {
     XELOGE("Invalid file type: %s", path);
     return X_STATUS_NO_SUCH_FILE;
   }
-  fs::FileEntry* fs_file = static_cast<fs::FileEntry*>(fs_entry);
 
   // Map into memory.
-  fs::MemoryMapping* mmap = fs_file->CreateMemoryMapping(kXEFileModeRead, 0, 0);
+  fs::MemoryMapping* mmap = fs_entry->CreateMemoryMapping(kXEFileModeRead, 0, 0);
   if (!mmap) {
     return X_STATUS_UNSUCCESSFUL;
   }

src/xenia/kernel/modules/xboxkrnl/xboxkrnl_io.cc

@@ -77,14 +77,18 @@ SHIM_CALL NtCreateFile_shim(
   // Resolve the file using the virtual file system.
   FileSystem* fs = state->filesystem();
   Entry* entry = fs->ResolvePath(object_name.buffer);
+  XFile* file = NULL;
   if (entry && entry->type() == Entry::kTypeFile) {
-    // Create file handle wrapper.
-    FileEntry* file_entry = (FileEntry*)entry;
-    XFile* file = new XFile(state, file_entry);
+    // Open the file.
+    result = entry->Open(state, &file);
+  } else {
+    result = X_STATUS_NO_SUCH_FILE;
+    info = X_FILE_DOES_NOT_EXIST;
+  }
+
+  if (XSUCCEEDED(result)) {
+    // Handle ref is incremented, so return that.
     handle = file->handle();
-
-    // TODO(benvanik): open/create/etc.
-
     file->Release();
     result  = X_STATUS_SUCCESS;
     info    = X_FILE_OPENED;

src/xenia/kernel/runtime.cc

@@ -84,7 +84,7 @@ int Runtime::LaunchXexFile(const xechar_t* path) {
   parent_path[file_name - path] = 0;
 
   // Register the local directory in the virtual filesystem.
-  result_code = filesystem_->RegisterLocalDirectoryDevice(
+  result_code = filesystem_->RegisterHostPathDevice(
       "\\Device\\Harddisk1\\Partition0", parent_path);
   if (result_code) {
     XELOGE("Unable to mount local directory");