/
IOKit.c
51 lines (40 loc) · 1.46 KB
/
IOKit.c
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#include "IOKit.h"
IOReturn IOKit_getConnection(const char* serviceName, io_connect_t *conn) {
IOReturn ret;
CFMutableDictionaryRef dict = IOServiceMatching(serviceName);
io_service_t dev = IOServiceGetMatchingService(kIOMasterPortDefault, dict);
if (!dev) {
return kIOReturnError;
}
ret = IOServiceOpen(dev, mach_task_self(), 0, conn);
IOObjectRelease(dev);
return ret;
}
IOReturn IOKit_call(const char *serviceName,
uint32_t selector,
const uint64_t *input,
uint32_t inputCnt,
const void *inputStruct,
size_t inputStructCnt,
uint64_t *output,
uint32_t *outputCnt,
void *outputStruct,
size_t *outputStructCnt) {
IOReturn ret;
io_connect_t conn = 0;
ret = IOKit_getConnection(serviceName, &conn);
if (ret != kIOReturnSuccess) {
return ret;
}
ret = IOConnectCallMethod(conn,
selector,
input,
inputCnt,
inputStruct,
inputStructCnt,
output,
outputCnt,
outputStruct,
outputStructCnt);
return ret;
}