Function SysSetFileStatusFlags

Kernel/src/arch/x86_64/syscalls.cpp:2062–2077

//////////////////////// \brief SysSetFileStatusFlags(fd, flags) Set a file handle's mode/status flags \param fd (int) file descriptor \param flags (int) new status flags \return 0 on success, negative error code on failure ////////////////////////

/// \return 0 on success, negative error code on failure
/////////////////////////////
long SysSetFileStatusFlags(regs64_t* r){
	int fd = static_cast<int>(SC_ARG0(r));
	int nFlags = static_cast<int>(SC_ARG1(r));
	fs_fd_t* handle;

	process_t* currentProcess = Scheduler::GetCurrentProcess();
	if(static_cast<unsigned>(fd) > currentProcess->fileDescriptors.get_length() || !(handle = currentProcess->fileDescriptors[fd])){
		return -EBADF;
	}

	int mask = (O_APPEND | O_NONBLOCK); // Only update append or nonblock
	
	handle->mode = (handle->mode & ~mask) | (nFlags & mask);

	return 0;
}

/////////////////////////////
/// \brief SysSelect(nfds, readfds, writefds, exceptfds, timeout) Set a file handle's mode/status flags