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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Assertions.h>
#include <AK/HashMap.h>
#include <AK/Singleton.h>
#include <AK/StringBuilder.h>
#include <AK/StringView.h>
#include <Kernel/FileSystem/FileSystem.h>
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/Net/LocalSocket.h>
#include <Kernel/VM/MemoryManager.h>
#include <LibC/errno_numbers.h>
namespace Kernel {
static u32 s_lastFileSystemID;
static AK::Singleton<HashMap<u32, FS*>> s_fs_map;
static HashMap<u32, FS*>& all_fses()
{
return *s_fs_map;
}
FS::FS()
: m_fsid(++s_lastFileSystemID)
{
all_fses().set(m_fsid, this);
}
FS::~FS()
{
all_fses().remove(m_fsid);
}
FS* FS::from_fsid(u32 id)
{
auto it = all_fses().find(id);
if (it != all_fses().end())
return (*it).value;
return nullptr;
}
FS::DirectoryEntryView::DirectoryEntryView(const StringView& n, InodeIdentifier i, u8 ft)
: name(n)
, inode(i)
, file_type(ft)
{
}
void FS::sync()
{
Inode::sync();
NonnullRefPtrVector<FS, 32> fses;
{
InterruptDisabler disabler;
for (auto& it : all_fses())
fses.append(*it.value);
}
for (auto& fs : fses)
fs.flush_writes();
}
void FS::lock_all()
{
for (auto& it : all_fses()) {
it.value->m_lock.lock();
}
}
void FS::set_block_size(size_t block_size)
{
ASSERT(block_size > 0);
if (block_size == m_block_size)
return;
m_block_size = block_size;
}
}
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