UWP: link ntdll functions using raw-dylib #143592
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rustbot has assigned @Mark-Simulacrum. Use |
rustbot
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O-windows
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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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