mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-08 04:15:23 +03:00
97 lines
3.5 KiB
C++
97 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, Spencer Dixon <spencercdixon@gmail.com>
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/FileSystem/ProcFS/ProcessSubDirectoryInode.h>
|
|
#include <Kernel/Process.h>
|
|
#include <Kernel/ProcessExposed.h>
|
|
|
|
namespace Kernel {
|
|
|
|
ErrorOr<NonnullLockRefPtr<ProcFSProcessSubDirectoryInode>> ProcFSProcessSubDirectoryInode::try_create(ProcFS const& procfs, SegmentedProcFSIndex::ProcessSubDirectory sub_directory_type, ProcessID pid)
|
|
{
|
|
return adopt_nonnull_lock_ref_or_enomem(new (nothrow) ProcFSProcessSubDirectoryInode(procfs, sub_directory_type, pid));
|
|
}
|
|
|
|
ProcFSProcessSubDirectoryInode::ProcFSProcessSubDirectoryInode(ProcFS const& procfs, SegmentedProcFSIndex::ProcessSubDirectory sub_directory_type, ProcessID pid)
|
|
: ProcFSProcessAssociatedInode(procfs, pid, SegmentedProcFSIndex::build_segmented_index_for_sub_directory(pid, sub_directory_type))
|
|
, m_sub_directory_type(sub_directory_type)
|
|
{
|
|
}
|
|
|
|
ErrorOr<size_t> ProcFSProcessSubDirectoryInode::read_bytes_locked(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const
|
|
{
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
ErrorOr<void> ProcFSProcessSubDirectoryInode::attach(OpenFileDescription&)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
void ProcFSProcessSubDirectoryInode::did_seek(OpenFileDescription&, off_t)
|
|
{
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
InodeMetadata ProcFSProcessSubDirectoryInode::metadata() const
|
|
{
|
|
MutexLocker locker(m_inode_lock);
|
|
auto process = Process::from_pid_in_same_jail(associated_pid());
|
|
if (!process)
|
|
return {};
|
|
|
|
auto traits = process->procfs_traits();
|
|
InodeMetadata metadata;
|
|
metadata.inode = { fsid(), traits->component_index() };
|
|
metadata.mode = S_IFDIR | traits->required_mode();
|
|
metadata.uid = traits->owner_user();
|
|
metadata.gid = traits->owner_group();
|
|
metadata.size = 0;
|
|
metadata.mtime = traits->modified_time();
|
|
return metadata;
|
|
}
|
|
|
|
ErrorOr<void> ProcFSProcessSubDirectoryInode::traverse_as_directory(Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
|
|
{
|
|
MutexLocker locker(procfs().m_lock);
|
|
auto process = Process::from_pid_in_same_jail(associated_pid());
|
|
if (!process)
|
|
return EINVAL;
|
|
switch (m_sub_directory_type) {
|
|
case SegmentedProcFSIndex::ProcessSubDirectory::OpenFileDescriptions:
|
|
return process->traverse_file_descriptions_directory(procfs().fsid(), move(callback));
|
|
case SegmentedProcFSIndex::ProcessSubDirectory::Stacks:
|
|
return process->traverse_stacks_directory(procfs().fsid(), move(callback));
|
|
case SegmentedProcFSIndex::ProcessSubDirectory::Children:
|
|
return process->traverse_children_directory(procfs().fsid(), move(callback));
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
ErrorOr<NonnullLockRefPtr<Inode>> ProcFSProcessSubDirectoryInode::lookup(StringView name)
|
|
{
|
|
MutexLocker locker(procfs().m_lock);
|
|
auto process = Process::from_pid_in_same_jail(associated_pid());
|
|
if (!process)
|
|
return ESRCH;
|
|
switch (m_sub_directory_type) {
|
|
case SegmentedProcFSIndex::ProcessSubDirectory::OpenFileDescriptions:
|
|
return process->lookup_file_descriptions_directory(procfs(), name);
|
|
case SegmentedProcFSIndex::ProcessSubDirectory::Stacks:
|
|
return process->lookup_stacks_directory(procfs(), name);
|
|
case SegmentedProcFSIndex::ProcessSubDirectory::Children:
|
|
return process->lookup_children_directory(procfs(), name);
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
}
|
|
|
|
}
|