UWP: link ntdll functions using raw-dylib #143592
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rustbot has assigned @Mark-Simulacrum. Use |
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ChrisDenton
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Jul 7, 2025
| Status as u32 | ||
| cfg_if::cfg_if! { | ||
| if #[cfg(target_vendor = "uwp")] { | ||
| windows_targets::link_raw_dylib!("ntdll.dll" "system" fn NtCreateFile(filehandle : *mut HANDLE, desiredaccess : FILE_ACCESS_RIGHTS, objectattributes : *const OBJECT_ATTRIBUTES, iostatusblock : *mut IO_STATUS_BLOCK, allocationsize : *const i64, fileattributes : FILE_FLAGS_AND_ATTRIBUTES, shareaccess : FILE_SHARE_MODE, createdisposition : NTCREATEFILE_CREATE_DISPOSITION, createoptions : NTCREATEFILE_CREATE_OPTIONS, eabuffer : *const core::ffi::c_void, ealength : u32) -> NTSTATUS); |
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Note that these definitions are just copy/pasted from the generated deps (see https://github.com/rust-lang/rust/blob/2412f8921ce39b986664e27c71b07f0ae24ac100/library/std/src/sys/pal/windows/c/windows_sys.rs).
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Can definition here desync with generated ones?
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That's always possible but in practice these bindings shouldn't change noticeably. In any case it's a pre-existing issue and in the near-ish future I hope to just be using the same thing for all targets unless they need delayed loading (i.e win7).
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@bors r+ |
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…acrum UWP: link ntdll functions using raw-dylib Lazy loading isn't necessary so there's no need for the added complexity and overhead. However, it may be that people using UWP rust libraries don't have the necessary import libraries linked by Visual Studio so this uses raw-dylib, which allows linking to DLL functions without having an import library. This is a somewhat temporary situation as raw-dylib is intended to eventually be the default for all imports. When that happens, this special case can be removed. Closes rust-lang#143530
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Rollup of 16 pull requests Successful merges: - #142885 (core: Add `BorrowedCursor::with_unfilled_buf`) - #143217 (Port #[link_ordinal] to the new attribute parsing infrastructure) - #143355 (wrapping shift: remove first bitmask and table) - #143448 (remote-test-client: Exit code `128 + <signal-number>` instead of `3`) - #143592 (UWP: link ntdll functions using raw-dylib) - #143681 (bootstrap/miri: avoid rebuilds for test builds) - #143710 (Updates to random number generation APIs) - #143724 (Tidy cleanup) - #143820 (Fixed a core crate compilation failure when enabling the `optimize_for_size` feature on some targets) - #143850 (Compiletest: Simplify {Html,Json}DocCk directive handling) - #143855 (Port `#[omit_gdb_pretty_printer_section]` to the new attribute parsing) - #143868 (warn on align on fields to avoid breaking changes) - #143875 (update issue number for `const_trait_impl`) - #143881 (Use zero for initialized Once state) - #143887 (Run bootstrap tests sooner in the `x test` pipeline) - #143893 (Don't require `eh_personality` lang item on targets that have a personality) Failed merges: - #143878 (Port `#[pointee]` to the new attribute parsing infrastructure) - #143891 (Port `#[coverage]` to the new attribute system) r? `@ghost` `@rustbot` modify labels: rollup
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Lazy loading isn't necessary so there's no need for the added complexity and overhead. However, it may be that people using UWP rust libraries don't have the necessary import libraries linked by Visual Studio so this uses raw-dylib, which allows linking to DLL functions without having an import library. This is a somewhat temporary situation as raw-dylib is intended to eventually be the default for all imports. When that happens, this special case can be removed.
Closes #143530