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//! C FFI bindings for [IOKit](https://developer.apple.com/documentation/iokit/).
//!
//! Based on [heim](https://github.com/heim-rs/heim/blob/master/heim-common/src/sys/macos/iokit/io_master_port.rs)
//! and [sysinfo's implementation](https://github.com/GuillaumeGomez/sysinfo/blob/master/src/apple/macos/ffi.rs).
//!
//! Ideally, we can remove this if sysinfo ever gains disk I/O capabilities.
use core_foundation::base::{mach_port_t, CFAllocatorRef};
use core_foundation::dictionary::CFMutableDictionaryRef;
use libc::c_char;
use mach2::kern_return::kern_return_t;
use mach2::port::MACH_PORT_NULL;
#[allow(non_camel_case_types)]
pub type io_object_t = mach_port_t;
#[allow(non_camel_case_types)]
pub type io_iterator_t = io_object_t;
#[allow(non_camel_case_types)]
pub type io_registry_entry_t = io_object_t;
pub type IOOptionBits = u32;
/// See https://github.com/1kc/librazermacos/pull/27#issuecomment-1042368531.
#[allow(non_upper_case_globals)]
pub const kIOMasterPortDefault: mach_port_t = MACH_PORT_NULL;
#[allow(non_upper_case_globals)]
pub const kIOServicePlane: &str = "IOService\0";
#[allow(non_upper_case_globals)]
pub const kIOMediaClass: &str = "IOMedia\0";
// See [here](https://developer.apple.com/documentation/iokit) for more details.
extern "C" {
pub fn IOServiceGetMatchingServices(
mainPort: mach_port_t, matching: CFMutableDictionaryRef, existing: *mut io_iterator_t,
) -> kern_return_t;
pub fn IOServiceMatching(name: *const c_char) -> CFMutableDictionaryRef;
pub fn IOIteratorNext(iterator: io_iterator_t) -> io_object_t;
pub fn IOObjectRelease(obj: io_object_t) -> kern_return_t;
pub fn IORegistryEntryGetParentEntry(
entry: io_registry_entry_t, plane: *const libc::c_char, parent: *mut io_registry_entry_t,
) -> kern_return_t;
// pub fn IOObjectConformsTo(object: io_object_t, className: *const libc::c_char) -> mach2::boolean::boolean_t;
pub fn IORegistryEntryCreateCFProperties(
entry: io_registry_entry_t, properties: *mut CFMutableDictionaryRef,
allocator: CFAllocatorRef, options: IOOptionBits,
) -> kern_return_t;
}
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