System Calls

2.3 System Calls
System calls provide a means for user or application programs to call upon the services of the operating system.
Generally written in C or C++, although some are written in assembly for optimal performance.


2.4 Types of System Calls

2.4.1 Process Control
2.4.2 File Management
2.4.3 Device Management
2.4.4 Information Maintenance
2.4.5 Communication
2.4.6 Protection

http://www.cs.uic.edu/~jbell/CourseNotes/OperatingSystems/2_Structures.html