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serenity/Kernel/FileSystem/SysFSComponent.cpp
Brian Gianforcaro bb58a4d943 Kernel: Make all Spinlocks use u8 for storage, remove template
The default template argument is only used in one place, and it
looks like it was probably just an oversight. The rest of the Kernel
code all uses u8 as the type. So lets make that the default and remove
the unused template argument, as there doesn't seem to be a reason to
allow the size to be customizable.
2021-09-05 20:46:02 +02:00

74 lines
1.9 KiB
C++

/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/SysFS.h>
#include <Kernel/FileSystem/SysFSComponent.h>
namespace Kernel {
static Spinlock s_index_lock;
static InodeIndex s_next_inode_index { 0 };
static size_t allocate_inode_index()
{
SpinlockLocker lock(s_index_lock);
s_next_inode_index = s_next_inode_index.value() + 1;
VERIFY(s_next_inode_index > 0);
return s_next_inode_index.value();
}
SysFSComponent::SysFSComponent(StringView name)
: m_name(KString::try_create(name).release_nonnull())
, m_component_index(allocate_inode_index())
{
}
KResult SysFSDirectory::traverse_as_directory(unsigned fsid, Function<bool(FileSystem::DirectoryEntryView const&)> callback) const
{
MutexLocker locker(SysFSComponentRegistry::the().get_lock());
VERIFY(m_parent_directory);
callback({ ".", { fsid, component_index() }, 0 });
callback({ "..", { fsid, m_parent_directory->component_index() }, 0 });
for (auto& component : m_components) {
InodeIdentifier identifier = { fsid, component.component_index() };
callback({ component.name(), identifier, 0 });
}
return KSuccess;
}
RefPtr<SysFSComponent> SysFSDirectory::lookup(StringView name)
{
for (auto& component : m_components) {
if (component.name() == name) {
return component;
}
}
return {};
}
SysFSDirectory::SysFSDirectory(StringView name)
: SysFSComponent(name)
{
}
SysFSDirectory::SysFSDirectory(StringView name, SysFSDirectory const& parent_directory)
: SysFSComponent(name)
, m_parent_directory(parent_directory)
{
}
NonnullRefPtr<SysFSInode> SysFSDirectory::to_inode(SysFS const& sysfs_instance) const
{
return SysFSDirectoryInode::create(sysfs_instance, *this);
}
NonnullRefPtr<SysFSInode> SysFSComponent::to_inode(SysFS const& sysfs_instance) const
{
return SysFSInode::create(sysfs_instance, *this);
}
}