RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-10-31 00:42:44 +00:00
Code Issues Activity Actions

Kernel: Move ProcFS related overrides in Process to ProcessProcFSTraits

Browse source 
This allows us to 1) let go of the Process when an inode is ref'ing for
ProcFSExposedComponent related reasons, and 2) change our ref/unref
implementation.
This commit is contained in:
sin-ack 2021-08-14 12:43:34 +00:00 • committed by Andreas Kling
parent 748938ea59
commit 2830a0ecda
7 changed files with 143 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

72
Kernel/ProcessProcFSTraits.cpp Normal file
View file

@ -0,0 +1,72 @@
/*
* Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/ProcFS.h>
#include <Kernel/Process.h>
namespace Kernel {
uid_t Process::ProcessProcFSTraits::owner_user() const
{
auto process = m_process.strong_ref();
if (!process)
return 0;
return process->uid();
}
gid_t 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;
auto maybe_inode = ProcFSProcessDirectoryInode::try_create(procfs_instance, process->pid());
if (maybe_inode.is_error())
return maybe_inode.error();
return maybe_inode.release_value();
}
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()) }, 0 });
callback({ "..", { fsid, ProcFSComponentRegistry::the().root_directory().component_index() }, 0 });
callback({ "fd", { fsid, SegmentedProcFSIndex::build_segmented_index_for_sub_directory(process->pid(), SegmentedProcFSIndex::ProcessSubDirectory::FileDescriptions) }, 0 });
callback({ "stacks", { fsid, SegmentedProcFSIndex::build_segmented_index_for_sub_directory(process->pid(), SegmentedProcFSIndex::ProcessSubDirectory::Stacks) }, 0 });
callback({ "unveil", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::Unveil) }, 0 });
callback({ "pledge", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::Pledge) }, 0 });
callback({ "fds", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::FileDescriptions) }, 0 });
callback({ "exe", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::BinaryLink) }, 0 });
callback({ "cwd", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::CurrentWorkDirectoryLink) }, 0 });
callback({ "perf_events", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::PerformanceEvents) }, 0 });
callback({ "vm", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::VirtualMemoryStats) }, 0 });
callback({ "root", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(process->pid(), SegmentedProcFSIndex::MainProcessProperty::RootLink) }, 0 });
return KSuccess;
}
}