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Research and limitation of system call based on Linux platform

The Linux platform is applied more and more widely in all kinds of fields, especially in backstage server end. In addition, the development of embedded Linux is forwarded. Behind all these applications, security, stability, simplicity and efficiency are the key features to success. Under Linux, the rules of system call achieve and consolidate these features. This paper emphasizes the rules of system calls, illustrates the specific method to design and achieve a new system call and provides an instance of a system call from user space. At the end, this paper gives a further discussion on the positive and negative aspects to achieve system call and summarizes the advantages and disadvantages to add system call.