mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-04-26 14:28:49 +00:00
eeaba41d13
Unlike DirectoryEntry (which is used when constructing directories), DirectoryEntryView does not manage storage for file names. Names are just StringViews. This is much more suited to the directory traversal API and makes it easier to implement this in file system classes since they no longer need to create temporary name copies while traversing.
125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
/*
|
|
* 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/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 HashMap<u32, FS*>* s_fs_map;
|
|
|
|
static HashMap<u32, FS*>& all_fses()
|
|
{
|
|
if (!s_fs_map)
|
|
s_fs_map = new HashMap<u32, FS*>();
|
|
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::DirectoryEntry::DirectoryEntry(const char* n, InodeIdentifier i, u8 ft)
|
|
: name_length(strlen(n))
|
|
, inode(i)
|
|
, file_type(ft)
|
|
{
|
|
ASSERT(name_length < (int)sizeof(name));
|
|
memcpy(name, n, name_length);
|
|
name[name_length] = '\0';
|
|
}
|
|
|
|
FS::DirectoryEntry::DirectoryEntry(const char* n, size_t nl, InodeIdentifier i, u8 ft)
|
|
: name_length(nl)
|
|
, inode(i)
|
|
, file_type(ft)
|
|
{
|
|
ASSERT(name_length < (int)sizeof(name));
|
|
memcpy(name, n, nl);
|
|
name[nl] = '\0';
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
}
|