kernel: Move file descriptors into their own separate file

kernel/CMakeLists.txt

@@ -56,6 +56,7 @@ set(SOURCES
     src/fs/MBR.cpp
     src/fs/GPT.cpp
     src/fs/StorageCache.cpp
+    src/fs/OpenFileDescription.cpp
     src/net/UnixSocket.cpp
     src/fs/tmpfs/FileSystem.cpp
     src/fs/tmpfs/Inode.cpp

kernel/src/fs/OpenFileDescription.cpp

@@ -0,0 +1,33 @@
+#include "fs/OpenFileDescription.h"
+#include <bits/open-flags.h>
+
+OpenFileDescription::OpenFileDescription(SharedPtr<VFS::Inode> ino, int fl) : inode(ino), flags(fl)
+{
+    inode->add_handle();
+}
+
+OpenFileDescription::~OpenFileDescription()
+{
+    inode->remove_handle();
+    inode->did_close();
+}
+
+bool FileDescriptor::should_append()
+{
+    return description->flags & O_APPEND;
+}
+
+bool FileDescriptor::should_block()
+{
+    return !(description->flags & O_NONBLOCK);
+}
+
+bool FileDescriptor::is_readable()
+{
+    return description->flags & O_RDONLY;
+}
+
+bool FileDescriptor::is_writable()
+{
+    return description->flags & O_WRONLY;
+}

kernel/src/fs/OpenFileDescription.h

@@ -0,0 +1,36 @@
+#pragma once
+#include "fs/VFS.h"
+#include <luna/SharedPtr.h>
+#include <luna/String.h>
+
+struct OpenFileDescription : public Shareable
+{
+    SharedPtr<VFS::Inode> inode;
+    int flags { 0 };
+    String path;
+
+    OpenFileDescription(SharedPtr<VFS::Inode>, int);
+    ~OpenFileDescription();
+};
+
+struct FileDescriptor
+{
+    SharedPtr<OpenFileDescription> description;
+    usize offset { 0 };
+    int flags { 0 };
+
+    bool should_append();
+    bool should_block();
+    bool is_writable();
+    bool is_readable();
+
+    SharedPtr<VFS::Inode> inode()
+    {
+        return description->inode;
+    }
+
+    int& status_flags()
+    {
+        return description->flags;
+    }
+};

kernel/src/thread/Thread.cpp

@@ -236,34 +236,3 @@ void Thread::send_signal(int signo)
         wake_up();
     }
 }
-
-OpenFileDescription::OpenFileDescription(SharedPtr<VFS::Inode> ino, int fl) : inode(ino), flags(fl)
-{
-    inode->add_handle();
-}
-
-OpenFileDescription::~OpenFileDescription()
-{
-    inode->remove_handle();
-    inode->did_close();
-}
-
-bool FileDescriptor::should_append()
-{
-    return description->flags & O_APPEND;
-}
-
-bool FileDescriptor::should_block()
-{
-    return !(description->flags & O_NONBLOCK);
-}
-
-bool FileDescriptor::is_readable()
-{
-    return description->flags & O_RDONLY;
-}
-
-bool FileDescriptor::is_writable()
-{
-    return description->flags & O_WRONLY;
-}

kernel/src/thread/Thread.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "arch/MMU.h"
+#include "fs/OpenFileDescription.h"
 #include "fs/VFS.h"
 #include "memory/AddressSpace.h"
 #include <bits/signal.h>
@@ -29,37 +30,6 @@ enum class ThreadState
     Dying
 };
 
-struct OpenFileDescription : public Shareable
-{
-    SharedPtr<VFS::Inode> inode;
-    int flags { 0 };
-
-    OpenFileDescription(SharedPtr<VFS::Inode>, int);
-    ~OpenFileDescription();
-};
-
-struct FileDescriptor
-{
-    SharedPtr<OpenFileDescription> description;
-    usize offset { 0 };
-    int flags { 0 };
-
-    bool should_append();
-    bool should_block();
-    bool is_writable();
-    bool is_readable();
-
-    SharedPtr<VFS::Inode> inode()
-    {
-        return description->inode;
-    }
-
-    int& status_flags()
-    {
-        return description->flags;
-    }
-};
-
 static constexpr int FD_MAX = 64;
 
 struct Credentials