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Currently bindgen has special logic to recognise `size_t` and `ssize_t` and map them to Rust `usize` and `isize`. Similarly, `ptrdiff_t` is mapped to `isize`. However this falls short for `__kernel_size_t`, `__kernel_ssize_t` and `__kernel_ptrdiff_t`. To ensure that they are mapped to usize/isize rather than 32/64 integers depending on platform, blocklist them in bindgen parameters and manually provide their definition. Signed-off-by: Gary Guo <gary@garyguo.net> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Trevor Gross <tmgross@umich.edu> Link: https://lore.kernel.org/r/20240913213041.395655-3-gary@garyguo.net [ Formatted comment. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
36 lines
1.3 KiB
Text
36 lines
1.3 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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# We want to map these types to `isize`/`usize` manually, instead of
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# define them as `int`/`long` depending on platform bitwidth.
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--blocklist-type __kernel_s?size_t
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--blocklist-type __kernel_ptrdiff_t
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--opaque-type xregs_state
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--opaque-type desc_struct
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--opaque-type arch_lbr_state
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--opaque-type local_apic
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# Packed type cannot transitively contain a `#[repr(align)]` type.
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--opaque-type alt_instr
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--opaque-type x86_msi_data
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--opaque-type x86_msi_addr_lo
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# `try` is a reserved keyword since Rust 2018; solved in `bindgen` v0.59.2,
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# commit 2aed6b021680 ("context: Escape the try keyword properly").
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--opaque-type kunit_try_catch
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# If SMP is disabled, `arch_spinlock_t` is defined as a ZST which triggers a Rust
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# warning. We don't need to peek into it anyway.
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--opaque-type spinlock
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# `seccomp`'s comment gets understood as a doctest
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--no-doc-comments
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# These functions use the `__preserve_most` calling convention, which neither bindgen
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# nor Rust currently understand, and which Clang currently declares to be unstable.
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--blocklist-function __list_.*_report
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# These constants are sometimes not recognized by bindgen depending on config.
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# We use const helpers to aid bindgen, to avoid conflicts when constants are
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# recognized, block generation of the non-helper constants.
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--blocklist-item ARCH_SLAB_MINALIGN
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