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Kernel: Allow getting a Device from a FileDescription

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Like we already do for other kinds of files.
This commit is contained in:
Sergey Bugaev 2020-01-12 18:28:23 +03:00 • committed by Andreas Kling
parent 35b0f10f20
commit 3393b78623
2 changed files with 16 additions and 0 deletions
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14
Kernel/FileSystem/FileDescription.cpp
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@ -172,6 +172,20 @@ bool FileDescription::is_device() const
return m_file->is_device(); return m_file->is_device();
} }
const Device* FileDescription::device() const
{
if (!is_device())
return nullptr;
return static_cast<const Device*>(m_file.ptr());
}
Device* FileDescription::device()
{
if (!is_device())
return nullptr;
return static_cast<Device*>(m_file.ptr());
}
bool FileDescription::is_tty() const bool FileDescription::is_tty() const
{ {
return m_file->is_tty(); return m_file->is_tty();

2
Kernel/FileSystem/FileDescription.h
View file

@ -71,6 +71,8 @@ public:
const File& file() const { return *m_file; } const File& file() const { return *m_file; }
bool is_device() const; bool is_device() const;
const Device* device() const;
Device* device();
bool is_tty() const; bool is_tty() const;
const TTY* tty() const; const TTY* tty() const;