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Kernel: Put Process unveil state in a SpinlockProtected container

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This makes path resolution safe to perform without holding the big lock.
This commit is contained in:
Andreas Kling 2022-03-07 21:23:08 +01:00
parent 24f02bd421
commit 580d89f093
Notes: sideshowbarker 2024-07-17 17:49:23 +09:00
7 changed files with 87 additions and 67 deletions
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8
Kernel/FileSystem/VirtualFileSystem.cpp
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@ -748,10 +748,10 @@ UnveilNode const& VirtualFileSystem::find_matching_unveiled_path(StringView path
{
auto& current_process = Process::current();
VERIFY(current_process.veil_state() != VeilState::None);
auto& unveil_root = current_process.unveiled_paths();
auto path_parts = KLexicalPath::parts(path);
return unveil_root.traverse_until_last_accessible_node(path_parts.begin(), path_parts.end());
return current_process.unveil_data().with([&](auto const& unveil_data) -> UnveilNode const& {
auto path_parts = KLexicalPath::parts(path);
return unveil_data.paths.traverse_until_last_accessible_node(path_parts.begin(), path_parts.end());
});
}
ErrorOr<void> VirtualFileSystem::validate_path_against_process_veil(Custody const& custody, int options)