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Kernel: Make SharedMemory inherit from File.

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This commit is contained in:
Andreas Kling 2019-04-28 22:31:31 +02:00
parent a6d407fec5
commit a104d7cc93
5 changed files with 57 additions and 20 deletions
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29
Kernel/FileSystem/FileDescriptor.cpp
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@ -23,11 +23,6 @@ Retained<FileDescriptor> FileDescriptor::create(RetainPtr<File>&& file)
return adopt(*new FileDescriptor(move(file)));
}
Retained<FileDescriptor> FileDescriptor::create(RetainPtr<SharedMemory>&& shared_memory)
{
return adopt(*new FileDescriptor(move(shared_memory)));
}
Retained<FileDescriptor> FileDescriptor::create(RetainPtr<Socket>&& socket, SocketRole role)
{
return adopt(*new FileDescriptor(move(socket), role));
@ -53,11 +48,6 @@ FileDescriptor::FileDescriptor(RetainPtr<File>&& file)
{
}
FileDescriptor::FileDescriptor(RetainPtr<SharedMemory>&& shared_memory)
: m_shared_memory(move(shared_memory))
{
}
FileDescriptor::FileDescriptor(RetainPtr<Socket>&& socket, SocketRole role)
: m_socket(move(socket))
{
@ -448,3 +438,22 @@ KResult FileDescriptor::truncate(off_t length)
ASSERT(is_shared_memory());
return shared_memory()->truncate(length);
}
bool FileDescriptor::is_shared_memory() const
{
return m_file && m_file->is_shared_memory();
}
SharedMemory* FileDescriptor::shared_memory()
{
if (!is_shared_memory())
return nullptr;
return static_cast<SharedMemory*>(m_file.ptr());
}
const SharedMemory* FileDescriptor::shared_memory() const
{
if (!is_shared_memory())
return nullptr;
return static_cast<const SharedMemory*>(m_file.ptr());
}