Re: [PATCH v2] scripts: generate_rust_analyzer.py: avoid FD leak

["Gary Guo" <gary@garyguo.net>]

On Tue Jan 27, 2026 at 4:35 PM GMT, Tamir Duberstein wrote:
> Use `pathlib.Path.read_text()` to avoid leaking file descriptors.
>
> Fixes: 8c4555ccc55c ("scripts: add `generate_rust_analyzer.py`")
> Cc: stable@vger.kernel.org
> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
> Reviewed-by: Fiona Behrens <me@kloenk.dev>
> Reviewed-by: Trevor Gross <tmgross@umich.edu>
> Signed-off-by: Tamir Duberstein <tamird@kernel.org>
> ---
> Changes in v2:
> - Use pathlib.Path.read_text. (Levi Zim)
> - Drop errant Tested-by tag. (Miguel Ojeda)
> - Link to v1: https://patch.msgid.link/20260122-rust-analyzer-fd-leak-v1-1-945577813b20@kernel.org
> ---
>  scripts/generate_rust_analyzer.py | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
> index 3b645da90092..152bd3705303 100755
> --- a/scripts/generate_rust_analyzer.py
> +++ b/scripts/generate_rust_analyzer.py
> @@ -190,9 +190,10 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs, core_edit
>  
>      def is_root_crate(build_file, target):
>          try:
> -            return f"{target}.o" in open(build_file).read()
> +            contents = build_file.read_text()

Couldn't this just be

    return f"{target.o}" in build_file.read_text()

?

Best,
Gary

>          except FileNotFoundError:
>              return False
> +        return f"{target}.o" in contents
>  
>      # Then, the rest outside of `rust/`.
>      #
>
> ---
> base-commit: 2af6ad09fc7dfe9b3610100983cccf16998bf34d
> change-id: 20260122-rust-analyzer-fd-leak-b247830d666e
>
> Best regards,
> --  
> Tamir Duberstein <tamird@kernel.org>