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Taken from Documentation/process/coding-style.rst Signed-off-by: Finn Behrens <me@kloenk.de>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,135 +1,144 @@ | ||
| // SPDX-License-Identifier: GPL-2.0 | ||
|
|
||
| use std::path::PathBuf; | ||
| use std::env; | ||
| use std::path::PathBuf; | ||
|
|
||
| const INCLUDED_TYPES: &[&str] = &["file_system_type", "mode_t", "umode_t", "ctl_table"]; | ||
| const INCLUDED_TYPES: &[&str] = | ||
| &["file_system_type", "mode_t", "umode_t", "ctl_table"]; | ||
| const INCLUDED_FUNCTIONS: &[&str] = &[ | ||
| "cdev_add", | ||
| "cdev_init", | ||
| "cdev_del", | ||
| "register_filesystem", | ||
| "unregister_filesystem", | ||
| "krealloc", | ||
| "kfree", | ||
| "mount_nodev", | ||
| "kill_litter_super", | ||
| "register_sysctl", | ||
| "unregister_sysctl_table", | ||
| "access_ok", | ||
| "_copy_to_user", | ||
| "_copy_from_user", | ||
| "alloc_chrdev_region", | ||
| "unregister_chrdev_region", | ||
| "wait_for_random_bytes", | ||
| "get_random_bytes", | ||
| "rng_is_initialized", | ||
| "printk", | ||
| "add_device_randomness", | ||
| "cdev_add", | ||
| "cdev_init", | ||
| "cdev_del", | ||
| "register_filesystem", | ||
| "unregister_filesystem", | ||
| "krealloc", | ||
| "kfree", | ||
| "mount_nodev", | ||
| "kill_litter_super", | ||
| "register_sysctl", | ||
| "unregister_sysctl_table", | ||
| "access_ok", | ||
| "_copy_to_user", | ||
| "_copy_from_user", | ||
| "alloc_chrdev_region", | ||
| "unregister_chrdev_region", | ||
| "wait_for_random_bytes", | ||
| "get_random_bytes", | ||
| "rng_is_initialized", | ||
| "printk", | ||
| "add_device_randomness", | ||
| ]; | ||
| const INCLUDED_VARS: &[&str] = &[ | ||
| "EINVAL", | ||
| "ENOMEM", | ||
| "ESPIPE", | ||
| "EFAULT", | ||
| "EAGAIN", | ||
| "__this_module", | ||
| "FS_REQUIRES_DEV", | ||
| "FS_BINARY_MOUNTDATA", | ||
| "FS_HAS_SUBTYPE", | ||
| "FS_USERNS_MOUNT", | ||
| "FS_RENAME_DOES_D_MOVE", | ||
| "BINDINGS_GFP_KERNEL", | ||
| "KERN_INFO", | ||
| "VERIFY_WRITE", | ||
| "LINUX_VERSION_CODE", | ||
| "SEEK_SET", | ||
| "SEEK_CUR", | ||
| "SEEK_END", | ||
| "O_NONBLOCK", | ||
| "param_ops_bool", | ||
| "param_ops_int", | ||
| "EINVAL", | ||
| "ENOMEM", | ||
| "ESPIPE", | ||
| "EFAULT", | ||
| "EAGAIN", | ||
| "__this_module", | ||
| "FS_REQUIRES_DEV", | ||
| "FS_BINARY_MOUNTDATA", | ||
| "FS_HAS_SUBTYPE", | ||
| "FS_USERNS_MOUNT", | ||
| "FS_RENAME_DOES_D_MOVE", | ||
| "BINDINGS_GFP_KERNEL", | ||
| "KERN_INFO", | ||
| "VERIFY_WRITE", | ||
| "LINUX_VERSION_CODE", | ||
| "SEEK_SET", | ||
| "SEEK_CUR", | ||
| "SEEK_END", | ||
| "O_NONBLOCK", | ||
| "param_ops_bool", | ||
| "param_ops_int", | ||
| ]; | ||
| const OPAQUE_TYPES: &[&str] = &[ | ||
| // These need to be opaque because they're both packed and aligned, which rustc | ||
| // doesn't support yet. See https://github.com/rust-lang/rust/issues/59154 | ||
| // and https://github.com/rust-lang/rust-bindgen/issues/1538 | ||
| "desc_struct", | ||
| "xregs_state", | ||
| // These need to be opaque because they're both packed and aligned, which rustc | ||
| // doesn't support yet. See https://github.com/rust-lang/rust/issues/59154 | ||
| // and https://github.com/rust-lang/rust-bindgen/issues/1538 | ||
| "desc_struct", | ||
| "xregs_state", | ||
| ]; | ||
|
|
||
| // Takes the CFLAGS from the kernel Makefile and changes all the include paths to be absolute | ||
| // instead of relative. | ||
| fn prepare_cflags(cflags: &str, kernel_dir: &str) -> Vec<String> { | ||
| let cflag_parts = shlex::split(&cflags).unwrap(); | ||
| let mut cflag_iter = cflag_parts.iter(); | ||
| let mut kernel_args = vec![]; | ||
| while let Some(arg) = cflag_iter.next() { | ||
| // TODO: bindgen complains | ||
| if arg.starts_with("-Wp,-MMD") { | ||
| continue; | ||
| } | ||
| fn prepare_cflags(cflags: &str, kernel_dir: &str) -> Vec<String> | ||
| { | ||
| let cflag_parts = shlex::split(&cflags).unwrap(); | ||
| let mut cflag_iter = cflag_parts.iter(); | ||
| let mut kernel_args = vec![]; | ||
| while let Some(arg) = cflag_iter.next() { | ||
| // TODO: bindgen complains | ||
| if arg.starts_with("-Wp,-MMD") { | ||
| continue; | ||
| } | ||
|
|
||
| if arg.starts_with("-I") && !arg.starts_with("-I/") { | ||
| kernel_args.push(format!("-I{}/{}", kernel_dir, &arg[2..])); | ||
| } else if arg == "-include" { | ||
| kernel_args.push(arg.to_string()); | ||
| let include_path = cflag_iter.next().unwrap(); | ||
| if include_path.starts_with('/') { | ||
| kernel_args.push(include_path.to_string()); | ||
| } else { | ||
| kernel_args.push(format!("{}/{}", kernel_dir, include_path)); | ||
| } | ||
| } else { | ||
| kernel_args.push(arg.to_string()); | ||
| if arg.starts_with("-I") && !arg.starts_with("-I/") { | ||
| kernel_args.push(format!( | ||
| "-I{}/{}", | ||
| kernel_dir, | ||
| &arg[2..] | ||
| )); | ||
| } else if arg == "-include" { | ||
| kernel_args.push(arg.to_string()); | ||
| let include_path = cflag_iter.next().unwrap(); | ||
| if include_path.starts_with('/') { | ||
| kernel_args.push(include_path.to_string()); | ||
| } else { | ||
| kernel_args.push(format!( | ||
| "{}/{}", | ||
| kernel_dir, include_path | ||
| )); | ||
| } | ||
| } else { | ||
| kernel_args.push(arg.to_string()); | ||
| } | ||
| } | ||
| } | ||
| kernel_args | ||
| kernel_args | ||
| } | ||
|
|
||
| fn main() { | ||
| println!("cargo:rerun-if-env-changed=CC"); | ||
| println!("cargo:rerun-if-env-changed=RUST_BINDGEN_CFLAGS"); | ||
| fn main() | ||
| { | ||
| println!("cargo:rerun-if-env-changed=CC"); | ||
| println!("cargo:rerun-if-env-changed=RUST_BINDGEN_CFLAGS"); | ||
|
|
||
| let kernel_dir = "../../"; | ||
| let cflags = env::var("RUST_BINDGEN_CFLAGS") | ||
| .expect("Must be invoked from kernel makefile"); | ||
| let kernel_dir = "../../"; | ||
| let cflags = env::var("RUST_BINDGEN_CFLAGS") | ||
| .expect("Must be invoked from kernel makefile"); | ||
|
|
||
| let kernel_args = prepare_cflags(&cflags, &kernel_dir); | ||
| let kernel_args = prepare_cflags(&cflags, &kernel_dir); | ||
|
|
||
| let target = env::var("TARGET").unwrap(); | ||
| let target = env::var("TARGET").unwrap(); | ||
|
|
||
| let mut builder = bindgen::Builder::default() | ||
| .use_core() | ||
| .ctypes_prefix("c_types") | ||
| .derive_default(true) | ||
| .size_t_is_usize(true) | ||
| .rustfmt_bindings(true); | ||
| let mut builder = bindgen::Builder::default() | ||
| .use_core() | ||
| .ctypes_prefix("c_types") | ||
| .derive_default(true) | ||
| .size_t_is_usize(true) | ||
| .rustfmt_bindings(true); | ||
|
|
||
| builder = builder.clang_arg(format!("--target={}", target)); | ||
| for arg in kernel_args.iter() { | ||
| builder = builder.clang_arg(arg.clone()); | ||
| } | ||
| builder = builder.clang_arg(format!("--target={}", target)); | ||
| for arg in kernel_args.iter() { | ||
| builder = builder.clang_arg(arg.clone()); | ||
| } | ||
|
|
||
| println!("cargo:rerun-if-changed=src/bindings_helper.h"); | ||
| builder = builder.header("src/bindings_helper.h"); | ||
| println!("cargo:rerun-if-changed=src/bindings_helper.h"); | ||
| builder = builder.header("src/bindings_helper.h"); | ||
|
|
||
| for t in INCLUDED_TYPES { | ||
| builder = builder.whitelist_type(t); | ||
| } | ||
| for f in INCLUDED_FUNCTIONS { | ||
| builder = builder.whitelist_function(f); | ||
| } | ||
| for v in INCLUDED_VARS { | ||
| builder = builder.whitelist_var(v); | ||
| } | ||
| for t in OPAQUE_TYPES { | ||
| builder = builder.opaque_type(t); | ||
| } | ||
| let bindings = builder.generate().expect("Unable to generate bindings"); | ||
| for t in INCLUDED_TYPES { | ||
| builder = builder.whitelist_type(t); | ||
| } | ||
| for f in INCLUDED_FUNCTIONS { | ||
| builder = builder.whitelist_function(f); | ||
| } | ||
| for v in INCLUDED_VARS { | ||
| builder = builder.whitelist_var(v); | ||
| } | ||
| for t in OPAQUE_TYPES { | ||
| builder = builder.opaque_type(t); | ||
| } | ||
| let bindings = builder.generate().expect("Unable to generate bindings"); | ||
|
|
||
| let out_path = PathBuf::from("src/bindings_gen.rs"); | ||
| bindings | ||
| .write_to_file(out_path) | ||
| .expect("Couldn't write bindings!"); | ||
| let out_path = PathBuf::from("src/bindings_gen.rs"); | ||
| bindings.write_to_file(out_path) | ||
| .expect("Couldn't write bindings!"); | ||
| } |
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