FUNCTION: IOReturn IOMasterPort ( mach_port_t bootstrap, mach_port_t* master ) ;
-FUNCTION: CFDictionaryRef IOServiceMatching ( char* name ) ;
-FUNCTION: CFDictionaryRef IOServiceNameMatching ( char* name ) ;
-FUNCTION: CFDictionaryRef IOBSDNameMatching ( char* name ) ;
+FUNCTION: CFDictionaryRef IOServiceMatching ( c-string name ) ;
+FUNCTION: CFDictionaryRef IOServiceNameMatching ( c-string name ) ;
+FUNCTION: CFDictionaryRef IOBSDNameMatching ( c-string name ) ;
FUNCTION: IOReturn IOObjectRetain ( io_object_t o ) ;
FUNCTION: IOReturn IOObjectRelease ( io_object_t o ) ;
FUNCTION: IOReturn IORegistryEntryCreateCFProperties ( io_registry_entry_t entry, CFMutableDictionaryRef properties, CFAllocatorRef allocator, IOOptionBits options ) ;
-FUNCTION: char* mach_error_string ( IOReturn error ) ;
+FUNCTION: c-string mach_error_string ( IOReturn error ) ;
TUPLE: mach-error error-code error-string ;
: <mach-error> ( code -- error )