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Fri, 08 Nov 2024 10:01:45 -0800 (PST) X-Google-Smtp-Source: AGHT+IFhyluaPVV70eSO6iZo+1ACQh5JSnFU/paTGFP0efep//4xuscJhgzNAkyMzq0Bbn5Afs4T3A== X-Received: by 2002:a05:600c:3514:b0:42e:8d0d:bca5 with SMTP id 5b1f17b1804b1-432b74fdb3cmr30403495e9.2.1731088905123; Fri, 08 Nov 2024 10:01:45 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: manos.pitsidianakis@linaro.org, kwolf@redhat.com, junjie.mao@hotmail.com, zhao1.liu@intel.com, qemu-rust@nondevel.org Subject: [RFC PATCH 01/11] rust: qemu_api: do not disable lints outside bindgen-generated code Date: Fri, 8 Nov 2024 19:01:29 +0100 Message-ID: <20241108180139.117112-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241108180139.117112-1-pbonzini@redhat.com> References: <20241108180139.117112-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.34, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1731089099136116600 Content-Type: text/plain; charset="utf-8" rust/qemu-api/src/lib.rs is disabling lints that cause problems with code generated by bindgen. Instead, include the bindgen code via include!(...) and move the #![allow()] directives into the bindings module. Add MESON_BUILD_ROOT to the devenv, so that it's easy for build.rs to find the include file. Signed-off-by: Paolo Bonzini --- meson.build | 4 +++- rust/qemu-api/.gitignore | 2 +- rust/qemu-api/build.rs | 20 ++++++++++++++------ rust/qemu-api/meson.build | 1 + rust/qemu-api/src/bindings.rs | 29 +++++++++++++++++++++++++++++ rust/qemu-api/src/lib.rs | 22 ---------------------- 6 files changed, 48 insertions(+), 30 deletions(-) create mode 100644 rust/qemu-api/src/bindings.rs diff --git a/meson.build b/meson.build index e0b880e4e13..a7342c6edbd 100644 --- a/meson.build +++ b/meson.build @@ -3,6 +3,8 @@ project('qemu', ['c'], meson_version: '>=3D1.5.0', 'b_staticpic=3Dfalse', 'stdsplit=3Dfalse', 'opti= mization=3D2', 'b_pie=3Dtrue'], version: files('VERSION')) =20 +meson.add_devenv({ 'MESON_BUILD_ROOT' : meson.project_build_root() }) + add_test_setup('quick', exclude_suites: ['slow', 'thorough'], is_default: = true) add_test_setup('slow', exclude_suites: ['thorough'], env: ['G_TEST_SLOW=3D= 1', 'SPEED=3Dslow']) add_test_setup('thorough', env: ['G_TEST_SLOW=3D1', 'SPEED=3Dthorough']) @@ -4089,7 +4091,7 @@ if have_rust bindings_rs =3D rust.bindgen( input: 'rust/wrapper.h', dependencies: common_ss.all_dependencies(), - output: 'bindings.rs', + output: 'bindings.rs.inc', include_directories: include_directories('.', 'include'), bindgen_version: ['>=3D0.60.0'], args: bindgen_args, diff --git a/rust/qemu-api/.gitignore b/rust/qemu-api/.gitignore index b9e7e004c86..2accb8745dc 100644 --- a/rust/qemu-api/.gitignore +++ b/rust/qemu-api/.gitignore @@ -1,2 +1,2 @@ # Ignore generated bindings file overrides. -src/bindings.rs +/src/bindings.rs.inc diff --git a/rust/qemu-api/build.rs b/rust/qemu-api/build.rs index 20f8f718b90..e4eab718553 100644 --- a/rust/qemu-api/build.rs +++ b/rust/qemu-api/build.rs @@ -2,18 +2,26 @@ // Author(s): Manos Pitsidianakis // SPDX-License-Identifier: GPL-2.0-or-later =20 -use std::path::Path; +use std::{env, path::Path}; =20 use version_check as rustc; =20 fn main() { - if !Path::new("src/bindings.rs").exists() { - panic!( - "No generated C bindings found! Either build them manually wit= h bindgen or with meson \ - (`ninja bindings.rs`) and copy them to src/bindings.rs, or bu= ild through meson." - ); + // Placing bindings.rs.inc in the source directory is supported + // but not documented or encouraged. + let path =3D env::var("MESON_BUILD_ROOT") + .unwrap_or_else(|_| format!("{}/src", env!("CARGO_MANIFEST_DIR"))); + + let file =3D format!("{}/bindings.rs.inc", path); + if !Path::new(&file).exists() { + panic!(concat!( + "No generated C bindings found! If you want to run `cargo`, st= art a subshell\n", + "with `meson devenv`, or point MESON_BUILD_ROOT to the top of = the build tree." + )); } =20 + println!("cargo:rustc-env=3DBINDINGS_RS_INC=3D{}", file); + // Check for available rustc features if rustc::is_min_version("1.77.0").unwrap_or(false) { println!("cargo:rustc-cfg=3Dhas_offset_of"); diff --git a/rust/qemu-api/meson.build b/rust/qemu-api/meson.build index 6f637af7b1b..e3870e901e3 100644 --- a/rust/qemu-api/meson.build +++ b/rust/qemu-api/meson.build @@ -9,6 +9,7 @@ _qemu_api_rs =3D static_library( structured_sources( [ 'src/lib.rs', + 'src/bindings.rs', 'src/c_str.rs', 'src/definitions.rs', 'src/device_class.rs', diff --git a/rust/qemu-api/src/bindings.rs b/rust/qemu-api/src/bindings.rs new file mode 100644 index 00000000000..1dac310594d --- /dev/null +++ b/rust/qemu-api/src/bindings.rs @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#![allow( + dead_code, + improper_ctypes_definitions, + improper_ctypes, + non_camel_case_types, + non_snake_case, + non_upper_case_globals, + unsafe_op_in_unsafe_fn, + clippy::missing_const_for_fn, + clippy::too_many_arguments, + clippy::approx_constant, + clippy::use_self, + clippy::useless_transmute, + clippy::missing_safety_doc +)] + +#[cfg(MESON)] +include!("bindings.rs.inc"); + +#[cfg(not(MESON))] +include!(env!("BINDINGS_RS_INC")); + +unsafe impl Send for Property {} +unsafe impl Sync for Property {} +unsafe impl Sync for TypeInfo {} +unsafe impl Sync for VMStateDescription {} +unsafe impl Sync for VMStateField {} +unsafe impl Sync for VMStateInfo {} diff --git a/rust/qemu-api/src/lib.rs b/rust/qemu-api/src/lib.rs index aa8d16ec94b..440aff3817d 100644 --- a/rust/qemu-api/src/lib.rs +++ b/rust/qemu-api/src/lib.rs @@ -4,31 +4,9 @@ =20 #![cfg_attr(not(MESON), doc =3D include_str!("../README.md"))] =20 -#[allow( - dead_code, - improper_ctypes_definitions, - improper_ctypes, - non_camel_case_types, - non_snake_case, - non_upper_case_globals, - unsafe_op_in_unsafe_fn, - clippy::missing_const_for_fn, - clippy::too_many_arguments, - clippy::approx_constant, - clippy::use_self, - clippy::useless_transmute, - clippy::missing_safety_doc, -)] #[rustfmt::skip] pub mod bindings; =20 -unsafe impl Send for bindings::Property {} -unsafe impl Sync for bindings::Property {} -unsafe impl Sync for bindings::TypeInfo {} -unsafe impl Sync for bindings::VMStateDescription {} -unsafe impl Sync for bindings::VMStateField {} -unsafe impl Sync for bindings::VMStateInfo {} - pub mod c_str; pub mod definitions; pub mod device_class; --=20 2.47.0