Kernel: More work towards POSIX SHM, also add ftruncate().

1 files changed, 10 insertions, 0 deletions

diff --git a/Kernel/FileSystem/FileDescriptor.h b/Kernel/FileSystem/FileDescriptor.h
index fb0a4b6f31..65361712bc 100644
--- a/Kernel/FileSystem/FileDescriptor.h
+++ b/Kernel/FileSystem/FileDescriptor.h
@@ -15,6 +15,7 @@ class MasterPTY;
 class Process;
 class Region;
 class CharacterDevice;
+class SharedMemory;
 
 class FileDescriptor : public Retainable<FileDescriptor> {
 public:
@@ -85,6 +86,11 @@ public:
     bool is_fifo() const { return m_fifo; }
     FIFO::Direction fifo_direction() { return m_fifo_direction; }
 
+    bool is_file() const;
+    bool is_shared_memory() const { return m_shared_memory; }
+    SharedMemory* shared_memory() { return m_shared_memory.ptr(); }
+    const SharedMemory* shared_memory() const { return m_shared_memory.ptr(); }
+
     ByteBuffer& generator_cache() { return m_generator_cache; }
 
     void set_original_inode(Badge<VFS>, Retained<Inode>&& inode) { m_inode = move(inode); }
@@ -92,6 +98,8 @@ public:
     SocketRole socket_role() const { return m_socket_role; }
     void set_socket_role(SocketRole);
 
+    KResult truncate(off_t);
+
 private:
     friend class VFS;
     FileDescriptor(RetainPtr<Socket>&&, SocketRole);
@@ -115,6 +123,8 @@ private:
     RetainPtr<FIFO> m_fifo;
     FIFO::Direction m_fifo_direction { FIFO::Neither };
 
+    RetainPtr<SharedMemory> m_shared_memory;
+
     bool m_closed { false };
 };