From: Daniel Xu <dxu@xxxxxxxxx> This script is used to detect whether a kernel module is written in Rust. It will later be used to disable BTF generation on Rust modules as BTF does not yet support Rust. Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> Co-developed-by: Alex Gaynor <alex.gaynor@xxxxxxxxx> Signed-off-by: Alex Gaynor <alex.gaynor@xxxxxxxxx> Co-developed-by: Wedson Almeida Filho <wedsonaf@xxxxxxxxxx> Signed-off-by: Wedson Almeida Filho <wedsonaf@xxxxxxxxxx> Signed-off-by: Daniel Xu <dxu@xxxxxxxxx> Co-developed-by: Miguel Ojeda <ojeda@xxxxxxxxxx> Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx> --- scripts/is_rust_module.sh | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100755 scripts/is_rust_module.sh diff --git a/scripts/is_rust_module.sh b/scripts/is_rust_module.sh new file mode 100755 index 000000000000..28b3831a7593 --- /dev/null +++ b/scripts/is_rust_module.sh @@ -0,0 +1,16 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# is_rust_module.sh module.ko +# +# Returns `0` if `module.ko` is a Rust module, `1` otherwise. + +set -e + +# Using the `16_` prefix ensures other symbols with the same substring +# are not picked up (even if it would be unlikely). The last part is +# used just in case LLVM decides to use the `.` suffix. +# +# In the future, checking for the `.comment` section may be another +# option, see https://github.com/rust-lang/rust/pull/97550. +${NM} "$*" | grep -qE '^[0-9a-fA-F]+ r _R[^[:space:]]+16___IS_RUST_MODULE[^[:space:]]*$' -- 2.37.3
