Function mvol_init_write

src/burp/mvol.cpp:794–830

}

void mvol_init_write(BurpGlobals* tdgbl, const char* file_name, int* cnt, UCHAR** ptr)
{
	tdgbl->mvol_volume_count = 1;
	tdgbl->mvol_empty_file = true;

	if (file_name != NULL)
	{
		strncpy(tdgbl->mvol_old_file, file_name, MAX_FILE_NAME_SIZE);
		tdgbl->mvol_old_file[MAX_FILE_NAME_SIZE - 1] = 0;
	}
	else
	{
		tdgbl->mvol_old_file[0] = 0;
	}

	tdgbl->mvol_actual_buffer_size = tdgbl->mvol_io_buffer_size;
	const ULONG temp_buffer_size = tdgbl->mvol_io_buffer_size * tdgbl->gbl_sw_blk_factor;
	tdgbl->mvol_io_memory = BURP_alloc(temp_buffer_size + MAX_HEADER_SIZE * 2);
	tdgbl->mvol_io_ptr = tdgbl->mvol_io_buffer =
		(UCHAR*) FB_ALIGN((U_IPTR) tdgbl->mvol_io_memory, MAX_HEADER_SIZE);
	tdgbl->mvol_io_cnt = tdgbl->mvol_actual_buffer_size;

	while (!write_header(tdgbl->file_desc, temp_buffer_size, false))
	{
		if (tdgbl->action->act_action == ACT_backup_split)
		{
			BURP_error(269, true, tdgbl->action->act_file->fil_name.c_str());
			// msg 269 can't write a header record to file %s
		}
		tdgbl->file_desc = next_volume(tdgbl->file_desc, MODE_WRITE, false);
	}

	tdgbl->mvol_actual_buffer_size = temp_buffer_size;

	*cnt = tdgbl->mvol_io_cnt;
	*ptr = tdgbl->mvol_io_ptr;
}


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