mirror of
https://github.com/SerenityOS/serenity
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96 lines
4.4 KiB
C++
96 lines
4.4 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Spencer Dixon <spencercdixon@gmail.com>
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/FileSystem/ProcFS/ProcessDirectoryInode.h>
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#include <Kernel/FileSystem/ProcFS/ProcessPropertyInode.h>
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#include <Kernel/FileSystem/ProcFS/ProcessSubDirectoryInode.h>
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#include <Kernel/Process.h>
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#include <Kernel/ProcessExposed.h>
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namespace Kernel {
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ErrorOr<NonnullLockRefPtr<ProcFSProcessDirectoryInode>> ProcFSProcessDirectoryInode::try_create(ProcFS const& procfs, ProcessID pid)
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{
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return adopt_nonnull_lock_ref_or_enomem(new (nothrow) ProcFSProcessDirectoryInode(procfs, pid));
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}
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ProcFSProcessDirectoryInode::ProcFSProcessDirectoryInode(ProcFS const& procfs, ProcessID pid)
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: ProcFSProcessAssociatedInode(procfs, pid, SegmentedProcFSIndex::build_segmented_index_for_pid_directory(pid))
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{
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}
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ErrorOr<void> ProcFSProcessDirectoryInode::attach(OpenFileDescription&)
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{
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return {};
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}
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InodeMetadata ProcFSProcessDirectoryInode::metadata() const
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{
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MutexLocker locker(m_inode_lock);
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auto process = Process::from_pid_in_same_jail(associated_pid());
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if (!process)
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return {};
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auto traits = process->procfs_traits();
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InodeMetadata metadata;
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metadata.inode = { fsid(), traits->component_index() };
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metadata.mode = S_IFDIR | traits->required_mode();
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metadata.uid = traits->owner_user();
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metadata.gid = traits->owner_group();
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metadata.size = 0;
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metadata.mtime = traits->modified_time();
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return metadata;
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}
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ErrorOr<size_t> ProcFSProcessDirectoryInode::read_bytes_locked(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const
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{
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VERIFY_NOT_REACHED();
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}
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ErrorOr<void> ProcFSProcessDirectoryInode::traverse_as_directory(Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
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{
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MutexLocker locker(procfs().m_lock);
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auto process = Process::from_pid_in_same_jail(associated_pid());
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if (!process)
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return EINVAL;
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return process->procfs_traits()->traverse_as_directory(procfs().fsid(), move(callback));
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}
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ErrorOr<NonnullLockRefPtr<Inode>> ProcFSProcessDirectoryInode::lookup(StringView name)
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{
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MutexLocker locker(procfs().m_lock);
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auto process = Process::from_pid_in_same_jail(associated_pid());
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if (!process)
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return ESRCH;
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if (name == "fd"sv)
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return TRY(ProcFSProcessSubDirectoryInode::try_create(procfs(), SegmentedProcFSIndex::ProcessSubDirectory::OpenFileDescriptions, associated_pid()));
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if (name == "stacks"sv)
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return TRY(ProcFSProcessSubDirectoryInode::try_create(procfs(), SegmentedProcFSIndex::ProcessSubDirectory::Stacks, associated_pid()));
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if (name == "children"sv)
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return TRY(ProcFSProcessSubDirectoryInode::try_create(procfs(), SegmentedProcFSIndex::ProcessSubDirectory::Children, associated_pid()));
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if (name == "unveil"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::Unveil, associated_pid()));
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if (name == "pledge"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::Pledge, associated_pid()));
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if (name == "fds"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::OpenFileDescriptions, associated_pid()));
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if (name == "exe"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::BinaryLink, associated_pid()));
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if (name == "cwd"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::CurrentWorkDirectoryLink, associated_pid()));
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if (name == "perf_events"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::PerformanceEvents, associated_pid()));
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if (name == "vm"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::VirtualMemoryStats, associated_pid()));
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if (name == "cmdline"sv)
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return TRY(ProcFSProcessPropertyInode::try_create_for_pid_property(procfs(), SegmentedProcFSIndex::MainProcessProperty::CommandLine, associated_pid()));
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return ENOENT;
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}
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}
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