1 Rotation around the front-to-back axis is called roll. 2  Rotation around the side-to-side axis is called pitch. 3  Rotation around the vertical axis is called yaw.  The Ailerons Control Roll. On the outer rear edge of each wing, the two ailerons move in opposite directions, up and down, decreasing lift on one wing while increasing it on the other.
A System call is a mechanism used by an application for requesting a service from the operating system. Examples of the services provided by the operating system are allocation and deallocation of memory, reporting of current date and time etc.
How to Add Your Own System Calls. 1  Create a directory under the /usr/src/linux/ directory to hold your code. 2  Put any include files in /usr/include/sys/ and /usr/include/linux/. 3  Add the relocatable module produced by the link of your new kernel code to the ARCHIVES and the subdirectory to the SUBDIRS lines of the top level Makefile.