From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook --- rust/macros/export.rs | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 rust/macros/export.rs (limited to 'rust/macros/export.rs') diff --git a/rust/macros/export.rs b/rust/macros/export.rs new file mode 100644 index 000000000..6d53521f6 --- /dev/null +++ b/rust/macros/export.rs @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 + +use proc_macro2::TokenStream; +use quote::quote; + +/// Please see [`crate::export`] for documentation. +pub(crate) fn export(f: syn::ItemFn) -> TokenStream { + let name = &f.sig.ident; + + quote! { + // This verifies that the function has the same signature as the declaration generated by + // bindgen. It makes use of the fact that all branches of an if/else must have the same + // type. + const _: () = { + if true { + ::kernel::bindings::#name + } else { + #name + }; + }; + + #[no_mangle] + #f + } +} -- cgit v1.3.1