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Kernel: Move TTY-related code to a new subdirectory under Devices

The TTY subsystem is represented with unix devices, so it should be
under the Devices directory like the Audio, Storage, GPU and HID
subsystems.
This commit is contained in:
Liav A 2023-07-08 14:18:32 +03:00 committed by Andrew Kaster
parent c99c065a40
commit b55199c227
31 changed files with 42 additions and 42 deletions

View file

@ -0,0 +1,65 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Singleton.h>
#include <Kernel/API/POSIX/errno.h>
#include <Kernel/Debug.h>
#include <Kernel/Devices/TTY/MasterPTY.h>
#include <Kernel/Devices/TTY/PTYMultiplexer.h>
#include <Kernel/FileSystem/OpenFileDescription.h>
#include <Kernel/Sections.h>
namespace Kernel {
static Singleton<PTYMultiplexer> s_the;
PTYMultiplexer& PTYMultiplexer::the()
{
return *s_the;
}
UNMAP_AFTER_INIT PTYMultiplexer::PTYMultiplexer()
: CharacterDevice(5, 2)
{
m_freelist.with([&](auto& freelist) {
freelist.ensure_capacity(max_pty_pairs);
for (int i = max_pty_pairs; i > 0; --i)
freelist.unchecked_append(i - 1);
});
}
UNMAP_AFTER_INIT PTYMultiplexer::~PTYMultiplexer() = default;
UNMAP_AFTER_INIT void PTYMultiplexer::initialize()
{
MUST(the().after_inserting());
}
ErrorOr<NonnullRefPtr<OpenFileDescription>> PTYMultiplexer::open(int options)
{
return m_freelist.with([&](auto& freelist) -> ErrorOr<NonnullRefPtr<OpenFileDescription>> {
if (freelist.is_empty())
return EBUSY;
auto master_index = freelist.take_last();
auto master = TRY(MasterPTY::try_create(master_index));
dbgln_if(PTMX_DEBUG, "PTYMultiplexer::open: Vending master {}", master->index());
auto description = TRY(OpenFileDescription::try_create(*master));
description->set_rw_mode(options);
description->set_file_flags(options);
return description;
});
}
void PTYMultiplexer::notify_master_destroyed(Badge<MasterPTY>, unsigned index)
{
m_freelist.with([&](auto& freelist) {
freelist.append(index);
dbgln_if(PTMX_DEBUG, "PTYMultiplexer: {} added to freelist", index);
});
}
}