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Kernel: Move ProcFS related overrides in Process to ProcessProcFSTraits

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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
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38
Kernel/ProcessSpecificExposed.cpp
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@@ -40,40 +40,10 @@ KResultOr<size_t> Process::procfs_get_thread_stack(ThreadID thread_id, KBufferBu
return KSuccess;
}
InodeIndex Process::component_index() const
{
return SegmentedProcFSIndex::build_segmented_index_for_pid_directory(pid());
}
KResultOr<NonnullRefPtr<Inode>> Process::to_inode(const ProcFS& procfs_instance) const
{
auto maybe_inode = ProcFSProcessDirectoryInode::try_create(procfs_instance, m_protected_values.pid);
if (maybe_inode.is_error())
return maybe_inode.error();
return maybe_inode.release_value();
}
KResult Process::traverse_as_directory(unsigned fsid, Function<bool(FileSystem::DirectoryEntryView const&)> callback) const
{
callback({ ".", { fsid, SegmentedProcFSIndex::build_segmented_index_for_pid_directory(pid()) }, 0 });
callback({ "..", { fsid, ProcFSComponentRegistry::the().root_directory().component_index() }, 0 });
callback({ "fd", { fsid, SegmentedProcFSIndex::build_segmented_index_for_sub_directory(pid(), SegmentedProcFSIndex::ProcessSubDirectory::FileDescriptions) }, 0 });
callback({ "stacks", { fsid, SegmentedProcFSIndex::build_segmented_index_for_sub_directory(pid(), SegmentedProcFSIndex::ProcessSubDirectory::Stacks) }, 0 });
callback({ "unveil", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::Unveil) }, 0 });
callback({ "pledge", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::Pledge) }, 0 });
callback({ "fds", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::FileDescriptions) }, 0 });
callback({ "exe", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::BinaryLink) }, 0 });
callback({ "cwd", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::CurrentWorkDirectoryLink) }, 0 });
callback({ "perf_events", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::PerformanceEvents) }, 0 });
callback({ "vm", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::VirtualMemoryStats) }, 0 });
callback({ "root", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property_in_pid_directory(pid(), SegmentedProcFSIndex::MainProcessProperty::RootLink) }, 0 });
return KSuccess;
}
KResult Process::traverse_stacks_directory(unsigned fsid, Function<bool(FileSystem::DirectoryEntryView const&)> callback) const
{
callback({ ".", { fsid, SegmentedProcFSIndex::build_segmented_index_for_main_property(pid(), SegmentedProcFSIndex::ProcessSubDirectory::Stacks, SegmentedProcFSIndex::MainProcessProperty::Reserved) }, 0 });
callback({ "..", { fsid, component_index() }, 0 });
callback({ "..", { fsid, m_procfs_traits->component_index() }, 0 });
for_each_thread([&](const Thread& thread) {
int tid = thread.tid().value();
@@ -119,8 +89,8 @@ KResultOr<size_t> Process::procfs_get_file_description_link(unsigned fd, KBuffer
KResult Process::traverse_file_descriptions_directory(unsigned fsid, Function<bool(FileSystem::DirectoryEntryView const&)> callback) const
{
callback({ ".", { fsid, component_index() }, 0 });
callback({ "..", { fsid, component_index() }, 0 });
callback({ ".", { fsid, m_procfs_traits->component_index() }, 0 });
callback({ "..", { fsid, m_procfs_traits->component_index() }, 0 });
size_t count = 0;
fds().enumerate([&](auto& file_description_metadata) {
if (!file_description_metadata.is_valid()) {
@@ -309,7 +279,7 @@ mode_t Process::binary_link_required_mode() const
{
if (!executable())
return 0;
return ProcFSExposedComponent::required_mode();
return m_procfs_traits->required_mode();
}
KResult Process::procfs_get_binary_link(KBufferBuilder& builder) const