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Fri, 08 Nov 2024 10:01:55 -0800 (PST) X-Google-Smtp-Source: AGHT+IEoWfFl7m81wcIo5aOMoYnPF8LluVD0b+f9XkvT+VYIrAT4pTuM0QmDN0pWZqo2PgN5FjXJqw== X-Received: by 2002:a05:600c:5251:b0:431:5f1c:8352 with SMTP id 5b1f17b1804b1-432b74fc842mr30874485e9.5.1731088915106; Fri, 08 Nov 2024 10:01:55 -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 05/11] rust: cargo: store desired warning levels in workspace Cargo.toml Date: Fri, 8 Nov 2024 19:01:33 +0100 Message-ID: <20241108180139.117112-6-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=170.10.133.124; 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_H3=0.001, RCVD_IN_MSPIKE_WL=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: 1731089042855116600 Content-Type: text/plain; charset="utf-8" An extra benefit of workspaces is that they allow to place lint level settings in a single Cargo.toml; the settings are then inherited by packages in the workspace. Correspondingly, teach rustc_build_args.py to get the unexpected_cfgs configuration from the workspace Cargo.toml. Note that it is still possible to allow or deny warnings per crate or module, via the #![] attribute syntax. The rust/qemu-api/src/bindings.rs file is an example. Signed-off-by: Paolo Bonzini --- meson.build | 8 +++++--- rust/Cargo.toml | 8 ++++++++ rust/hw/char/pl011/Cargo.toml | 3 +++ rust/qemu-api-macros/Cargo.toml | 3 +++ rust/qemu-api/Cargo.toml | 5 ++--- rust/qemu-api/meson.build | 2 +- scripts/rust/rustc_args.py | 31 +++++++++++++++++++++++++++---- 7 files changed, 49 insertions(+), 11 deletions(-) diff --git a/meson.build b/meson.build index 7a9a523467b..5726135b324 100644 --- a/meson.build +++ b/meson.build @@ -120,11 +120,13 @@ if have_rust endif =20 if have_rust - rustc_args =3D find_program('scripts/rust/rustc_args.py') + rustc_args =3D [find_program('scripts/rust/rustc_args.py'), + '--workspace', meson.project_source_root() / 'rust'] rustfmt =3D find_program('rustfmt', required: false) =20 - # Prohibit code that is forbidden in Rust 2024 - rustc_lint_args =3D ['-D', 'unsafe_op_in_unsafe_fn'] + rustc_lint_args =3D run_command(rustc_args, + '--lints', files('rust/Cargo.toml'), + capture: true, check: true).stdout().strip().splitlines() =20 # Occasionally, we may need to silence warnings and clippy lints that # were only introduced in newer Rust compiler versions. Do not croak diff --git a/rust/Cargo.toml b/rust/Cargo.toml index 0c94d5037da..0230b92a9fa 100644 --- a/rust/Cargo.toml +++ b/rust/Cargo.toml @@ -5,3 +5,11 @@ members =3D [ "qemu-api", "hw/char/pl011", ] + +[workspace.lints.rust] +unexpected_cfgs =3D { level =3D "warn", check-cfg =3D [ + 'cfg(MESON)', 'cfg(HAVE_GLIB_WITH_ALIGNED_ALLOC)', + 'cfg(has_offset_of)'] } + +# Prohibit code that is forbidden in Rust 2024 +unsafe_op_in_unsafe_fn =3D "deny" diff --git a/rust/hw/char/pl011/Cargo.toml b/rust/hw/char/pl011/Cargo.toml index a373906b9fb..58f3e859f7e 100644 --- a/rust/hw/char/pl011/Cargo.toml +++ b/rust/hw/char/pl011/Cargo.toml @@ -21,3 +21,6 @@ bilge =3D { version =3D "0.2.0" } bilge-impl =3D { version =3D "0.2.0" } qemu_api =3D { path =3D "../../../qemu-api" } qemu_api_macros =3D { path =3D "../../../qemu-api-macros" } + +[lints] +workspace =3D true diff --git a/rust/qemu-api-macros/Cargo.toml b/rust/qemu-api-macros/Cargo.t= oml index a8f7377106b..5a27b52ee6e 100644 --- a/rust/qemu-api-macros/Cargo.toml +++ b/rust/qemu-api-macros/Cargo.toml @@ -20,3 +20,6 @@ proc-macro =3D true proc-macro2 =3D "1" quote =3D "1" syn =3D { version =3D "2", features =3D ["extra-traits"] } + +[lints] +workspace =3D true diff --git a/rust/qemu-api/Cargo.toml b/rust/qemu-api/Cargo.toml index cc716d75d46..669f288d1cb 100644 --- a/rust/qemu-api/Cargo.toml +++ b/rust/qemu-api/Cargo.toml @@ -23,6 +23,5 @@ version_check =3D "~0.9" default =3D [] allocator =3D [] =20 -[lints.rust] -unexpected_cfgs =3D { level =3D "warn", check-cfg =3D ['cfg(MESON)', 'cfg(= HAVE_GLIB_WITH_ALIGNED_ALLOC)', - 'cfg(has_offset_of)'] } +[lints] +workspace =3D true diff --git a/rust/qemu-api/meson.build b/rust/qemu-api/meson.build index 4ba5607d66b..8013911a348 100644 --- a/rust/qemu-api/meson.build +++ b/rust/qemu-api/meson.build @@ -5,7 +5,7 @@ if rustc.version().version_compare('>=3D1.77.0') endif =20 _qemu_api_cfg +=3D run_command(rustc_args, - '--config-headers', config_host_h, '--features', '--lints', files('Cargo= .toml'), + '--config-headers', config_host_h, '--features', files('Cargo.toml'), capture: true, check: true).stdout().strip().splitlines() =20 _qemu_api_rs =3D static_library( diff --git a/scripts/rust/rustc_args.py b/scripts/rust/rustc_args.py index 9b9778a1cac..26733439ed4 100644 --- a/scripts/rust/rustc_args.py +++ b/scripts/rust/rustc_args.py @@ -38,12 +38,19 @@ =20 class CargoTOML: tomldata: Mapping[Any, Any] + workspace_data: Mapping[Any, Any] check_cfg: Set[str] =20 - def __init__(self, path: str): + def __init__(self, path: str, workspace: Optional[str]): with open(path, 'rb') as f: self.tomldata =3D tomllib.load(f) =20 + if workspace is not None: + with open(workspace, 'rb') as f: + self.workspace_data =3D tomllib.load(f) + if "workspace" not in self.workspace_data: + self.workspace_data["workspace"] =3D {} + self.check_cfg =3D set(self.find_check_cfg()) =20 def find_check_cfg(self) -> Iterable[str]: @@ -54,10 +61,12 @@ def find_check_cfg(self) -> Iterable[str]: =20 @property def lints(self) -> Mapping[Any, Any]: - return self.get_table("lints") + return self.get_table("lints", True) =20 - def get_table(self, key: str) -> Mapping[Any, Any]: + def get_table(self, key: str, can_be_workspace: bool =3D False) -> Map= ping[Any, Any]: table =3D self.tomldata.get(key, {}) + if can_be_workspace and table.get("workspace", False) is True: + table =3D self.workspace_data["workspace"].get(key, {}) =20 return table =20 @@ -136,6 +145,16 @@ def main() -> None: action=3D"store", dest=3D"cargo_toml", help=3D"path to Cargo.toml file", + nargs=3D'?', + ) + parser.add_argument( + "--workspace", + metavar=3D"DIR", + action=3D"store", + dest=3D"workspace", + help=3D"path to root of the workspace", + required=3DFalse, + default=3DNone, ) parser.add_argument( "--features", @@ -168,7 +187,11 @@ def main() -> None: logging.debug("args: %s", args) =20 rustc_version =3D tuple((int(x) for x in args.rustc_version.split('.')= [0:2])) - cargo_toml =3D CargoTOML(args.cargo_toml) + if args.workspace: + workspace_cargo_toml =3D Path(args.workspace, "Cargo.toml").resolv= e() + cargo_toml =3D CargoTOML(args.cargo_toml, str(workspace_cargo_toml= )) + else: + cargo_toml =3D CargoTOML(args.cargo_toml, None) =20 if args.lints: for tok in generate_lint_flags(cargo_toml): --=20 2.47.0