System and method for realizing XFS in Linux system

Abstract

The invention discloses a system and a method for realizing XFS (eXtensions for Financial Services) in a Linux system. The system for realizing the XFS in the Linux system is suitable for residence in a financial terminal device, and comprises an AP (Application Programming) layer, an LFS (Linux Financial Services) manager, an SP (Service Provider) layer and a device driver layer, wherein the AP layer is suitable to register a dbus of a current AP process to a dbus daemon process, call the LFS manager to be connected with the SP layer through an API (Application Programming Interface), and obtain device information corresponding to an SP related to the current AP process from a dbus message; the LFS manager is suitable to locate the SP related to the current AP process in the SP layer through an SPI (Service Provider Interface) according to a call instruction of the AP layer; the SP layer is suitable to access the device driver layer to obtain the device information corresponding to the SP related to the current AP process, store the device information in a shared memory, generate the dbus message, and transmit the dbus message to the dbus daemon process; and the device driver layer is suitable to provide the device information corresponding to the SP related to the current AP process for the SP layer.

Description

technical field [0001] The invention relates to the field of financial technology, in particular to an XFS implementation system and method under a Linux system. Background technique [0002] At present, the vast majority of financial terminal equipment, such as ATM machines, etc., follow the CEN / XFS (Comité Européen de Normalization / eXtensions for Financial Services) specification based on the Windows operating system. The CEN / XFS specification is a financial service extension developed by the European Standardization Committee. The standard is closely related to the Windows system and has a strong operating system binding feature, which cannot be directly migrated to other systems, and the Windows system is less secure for banking business. [0003] As the Linux system is gradually applied to more and more fields, there have been XFS implementation methods based on the Linux system. However, in such methods, C++ callback methods or the underlying inter-process communicatio...

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Problems solved by technology

[0002] At present, the vast majority of financial terminal equipment, such as ATM machines, etc., follow the CEN / XFS (Comité Européen de Normalization / eXtensions for Financial Services) specification based on the Windows operating system. The CEN / XFS specification is a financial service extension developed by the European Standardization Committee. Standard, closely related to the Windows system, has a strong operating system binding feature, and cannot be directly migrated to other systems, and the Windows system is less secure for banking business

[0003] As the Linux system is gradually applied to more and more fields, there have been XFS implementation methods based on the Linux system. However, in such methods, C++ callback methods or the underlying inter-process communication methods of Linux are used for communication. The former It is easy to cause unnecessary coupling between systems, such as the coupling of C++ classes, resulting in serious portability and scalability problems, while the latter will lead to cumbersome development and error-prone problems due to the low level of operation

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