70 lines
1.3 KiB
C++
70 lines
1.3 KiB
C++
#pragma once
|
|
#include "fs/VFS.h"
|
|
#include <luna/Buffer.h>
|
|
#include <luna/String.h>
|
|
|
|
class MasterPTY;
|
|
|
|
class SlavePTY : public VFS::DeviceInode
|
|
{
|
|
public:
|
|
SlavePTY() = default;
|
|
|
|
VFS::InodeType type() const override
|
|
{
|
|
return VFS::InodeType::CharacterDevice;
|
|
}
|
|
|
|
Result<u64> query_shared_memory(off_t, usize) override
|
|
{
|
|
return err(ENOTSUP);
|
|
}
|
|
|
|
VFS::FileSystem* fs() const override
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
Result<usize> read(u8* buf, usize offset, usize length) const override;
|
|
|
|
Result<usize> write(const u8* buf, usize offset, usize length) override;
|
|
|
|
Result<u64> ioctl(int request, void* arg) override;
|
|
|
|
Result<u64> isatty() const override
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
Result<void> truncate(usize) override
|
|
{
|
|
// POSIX says truncate is for regular files, but doesn't tell us what error to return for non-regular files.
|
|
return err(EINVAL);
|
|
}
|
|
|
|
bool will_block_if_read() const override
|
|
{
|
|
return m_buffer.is_empty();
|
|
}
|
|
|
|
void did_link() override
|
|
{
|
|
m_metadata.nlinks++;
|
|
}
|
|
|
|
void did_unlink() override
|
|
{
|
|
m_metadata.nlinks--;
|
|
}
|
|
|
|
virtual ~SlavePTY() = default;
|
|
|
|
private:
|
|
mutable Buffer m_buffer;
|
|
|
|
MasterPTY* m_master;
|
|
String m_name;
|
|
|
|
friend class MasterPTY;
|
|
};
|