Function SysRead

Kernel/src/arch/x86_64/syscalls.cpp:240–262

}

long SysRead(regs64_t* r){
	process_t* proc = Scheduler::GetCurrentProcess();
	if(SC_ARG0(r) >= proc->fileDescriptors.get_length()){
		Log::Warning("Invalid File Descriptor: %d", SC_ARG0(r));
		return -EBADF;
	}
	fs_fd_t* handle = proc->fileDescriptors[SC_ARG0(r)];
	if(!handle){
		Log::Warning("Invalid File Descriptor: %d", SC_ARG0(r));
		return -EBADF;
	}

	uint8_t* buffer = (uint8_t*)SC_ARG1(r);
	uint64_t count = SC_ARG2(r);

	if(!Memory::CheckUsermodePointer(SC_ARG1(r), count, proc->addressSpace)){
		Log::Warning("Invalid Memory Buffer: %x", SC_ARG1(r));
		return -EFAULT;
	}

	ssize_t ret = fs::Read(handle, count, buffer);
	return ret;
}

long SysWrite(regs64_t* r){
	process_t* proc = Scheduler::GetCurrentProcess();