Support HomeBrew Loader (#577)

* Make it possibles to load hb-loader and hb-menu

One issue remains with hb-menu homebrew icons because of SIMD issues
(libjpeg-turbo related) and netloader doesn't work.

* Implement GetApplicationControlData

* Fix shared fonts for NSO/NRO

* Add homebrew NRO romfs support

This readd the NRO support by parsing the ASET header

* Address comments about HomebrewRomFs

* override Dispose in homebrew romfs stream

* Use a struct for file timestamp

* Simplify positional increments in GetApplicationControlData

* Address comments

* improve readability of the memory permission check in SetProcessMemoryPermission

* Fix previous broken check

* Add address space checks in SetProcessMemoryPermission

4 files changed, 43 insertions, 0 deletions

diff --git a/Ryujinx.HLE/FileSystem/FileSystemProvider.cs b/Ryujinx.HLE/FileSystem/FileSystemProvider.cs
index a806c9ee..f5459eec 100644
--- a/Ryujinx.HLE/FileSystem/FileSystemProvider.cs
+++ b/Ryujinx.HLE/FileSystem/FileSystemProvider.cs
@@ -1,5 +1,6 @@
 using Ryujinx.HLE.HOS;
 using Ryujinx.HLE.HOS.Services.FspSrv;
+using Ryujinx.HLE.Utilities;
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -279,5 +280,34 @@ namespace Ryujinx.HLE.FileSystem
 
             throw new InvalidOperationException($"Path {path} is not a child directory of {_rootPath}");
         }
+
+        public FileTimestamp GetFileTimeStampRaw(string name)
+        {
+            CheckIfDescendentOfRootPath(name);
+
+            DateTime creationDateTime   = DateTime.UnixEpoch;
+            DateTime modifiedDateTime   = DateTime.UnixEpoch;
+            DateTime lastAccessDateTime = DateTime.UnixEpoch;
+
+            if (File.Exists(name))
+            {
+                creationDateTime   = File.GetCreationTime(name);
+                modifiedDateTime   = File.GetLastWriteTime(name);
+                lastAccessDateTime = File.GetLastAccessTime(name);
+            }
+            else if (Directory.Exists(name))
+            {
+                creationDateTime   = Directory.GetCreationTime(name);
+                modifiedDateTime   = Directory.GetLastWriteTime(name);
+                lastAccessDateTime = Directory.GetLastAccessTime(name);
+            }
+
+            return new FileTimestamp
+            {
+                CreationDateTime   = creationDateTime,
+                ModifiedDateTime   = modifiedDateTime,
+                LastAccessDateTime = lastAccessDateTime
+            };
+        }
     }
 }
diff --git a/Ryujinx.HLE/FileSystem/IFileSystemProvider.cs b/Ryujinx.HLE/FileSystem/IFileSystemProvider.cs
index 8e2cae64..82cdebd9 100644
--- a/Ryujinx.HLE/FileSystem/IFileSystemProvider.cs
+++ b/Ryujinx.HLE/FileSystem/IFileSystemProvider.cs
@@ -1,5 +1,6 @@
 using Ryujinx.HLE.HOS;
 using Ryujinx.HLE.HOS.Services.FspSrv;
+using System;
 
 namespace Ryujinx.HLE.FileSystem
 {
@@ -36,5 +37,7 @@ namespace Ryujinx.HLE.FileSystem
         long GetFreeSpace(ServiceCtx context);
 
         long GetTotalSpace(ServiceCtx context);
+
+        FileTimestamp GetFileTimeStampRaw(string name);
     }
 }
diff --git a/Ryujinx.HLE/FileSystem/PFsProvider.cs b/Ryujinx.HLE/FileSystem/PFsProvider.cs
index fdddc9b0..69e7a9b8 100644
--- a/Ryujinx.HLE/FileSystem/PFsProvider.cs
+++ b/Ryujinx.HLE/FileSystem/PFsProvider.cs
@@ -143,5 +143,10 @@ namespace Ryujinx.HLE.FileSystem
         {
             throw new NotSupportedException();
         }
+
+        public FileTimestamp GetFileTimeStampRaw(string name)
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/Ryujinx.HLE/FileSystem/RomFsProvider.cs b/Ryujinx.HLE/FileSystem/RomFsProvider.cs
index 86bf2348..f64d99c7 100644
--- a/Ryujinx.HLE/FileSystem/RomFsProvider.cs
+++ b/Ryujinx.HLE/FileSystem/RomFsProvider.cs
@@ -160,5 +160,10 @@ namespace Ryujinx.HLE.FileSystem
         {
             throw new NotSupportedException();
         }
+
+        public FileTimestamp GetFileTimeStampRaw(string name)
+        {
+            throw new NotImplementedException();
+        }
     }
 }