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ProcessProcFSTraits.cpp
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ProcessProcFSTraits.cpp
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/*
* Copyright (c) 2021, sin-ack <[email protected]>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/ProcFS.h>
#include <Kernel/Process.h>
namespace Kernel {
UserID Process::ProcessProcFSTraits::owner_user() const
{
auto process = m_process.strong_ref();
if (!process)
return 0;
return process->uid();
}
GroupID Process::ProcessProcFSTraits::owner_group() const
{
auto process = m_process.strong_ref();
if (!process)
return 0;
return process->gid();
}
InodeIndex Process::ProcessProcFSTraits::component_index() const
{
auto process = m_process.strong_ref();
if (!process)
return {};
return SegmentedProcFSIndex::build_segmented_index_for_pid_directory(process->pid());
}
KResultOr<NonnullRefPtr<Inode>> Process::ProcessProcFSTraits::to_inode(const ProcFS& procfs_instance) const
{
auto process = m_process.strong_ref();
if (!process)
return ESRCH;
return TRY(ProcFSProcessDirectoryInode::try_create(procfs_instance, process->pid()));
}
KResult Process::ProcessProcFSTraits::traverse_as_directory(unsigned fsid, Function<bool(FileSystem::DirectoryEntryView const&)> callback) const
{
auto process = m_process.strong_ref();
if (!process)
return ESRCH;
callback({ ".", { fsid, SegmentedProcFSIndex::build_segmented_index_for_pid_directory(process->pid()) }, DT_DIR });
callback({ "..", { fsid, ProcFSComponentRegistry::the().root_directory().component_index() }, DT_DIR });
callback({ "fd", { fsid, SegmentedProcFSIndex::build_segmented_index_for_sub_directory(process->pid(), SegmentedProcFSIndex::ProcessSubDirectory::OpenFileDescriptions) }, DT_DIR });
callback({ "stacks", { fsid, SegmentedProcFSIndex::build_segmented_index_for_sub_directory(process->pid(), SegmentedProcFSIndex::ProcessSubDirectory::Stacks) }, DT_DIR });
callback({ "unveil", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::Unveil) }, DT_REG });
callback({ "pledge", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::Pledge) }, DT_REG });
callback({ "fds", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::OpenFileDescriptions) }, DT_DIR });
callback({ "exe", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::BinaryLink) }, DT_LNK });
callback({ "cwd", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::CurrentWorkDirectoryLink) }, DT_LNK });
callback({ "perf_events", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::PerformanceEvents) }, DT_REG });
callback({ "vm", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::VirtualMemoryStats) }, DT_REG });
return KSuccess;
}
}