Sagar Kadam: Porting Unix libc to Xen PV

This is a guest blog post by Sagar Kadam, one of our Google Summer of Code students. Sagar’s GSoC project is called Porting Unix libc to Xen PV. Please welcome Sagar into the community.

Hello all; I am Sagar Kadam from NYU Poly where I am pursuing my MS degree in Computer Sciences. This is my first year in GSoC: for that matter my first ever experience of working with any open-source project. My university is situated in the city of New York, a city that never sleeps (which many claim is because of bedbugs). My hobbies involve biking and cooking.

This summer I am porting Unix libc to the Xen para-virtualization platform of mini-os, with support of my mentor Ian Jackson. As of now the project uses newlib for all the C library functions. But newlib needs to be replaced with a cleaner and more functional POSIX compliant C library. Also, the new C library should make porting embedded applications such as qemu(-dm) to Xen much easier.

I have started with OpenBSD project’s C library implementation and am writing functionality for some basic syscalls. The syscalls which are required on priority (like write, read, etc) will be implemented first. These calls use hypercalls to communicate with Xen. Some small applications will be written/ported to test that these are functional (or how much). I will then move on to further syscalls. The target of the project is to make the libc implementation as complete as possible and porting a few embedded applications.

The code can be found at ragas/Porting-libc for anybody to read and comment and will be contributed to Xen.
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About Lars Kurth

Lars Kurth is a highly effective, passionate community manager with strong experience of working with open source communities (Symbian, Symbian DevCo, Eclipse, GNU) and currently is community manager for Lars has 9 years of experience building and leading engineering teams and a track record of executing several change programs impacting 1000 users. Lars has 16 years of industry experience in the tools and mobile sector working at ARM, Symbian Ltd, Symbian Foundation and Nokia. Lars has strong analytical, communication, influencing and presentation skills, good knowledge of marketing and product management and extensive background in C/C , Java and software development practices which he learned working as community manager, product manager, chief architect, engineering manager and software developer. If you want to know more, check out Personally, Lars has a wide range of interests such as literature, theatre, cinema, cooking and gardening. He is particularly fascinated by orchids and carnivorous plants and has built a rather large collection of plants from all over the world. His love for plants extends into a passion for travel, in particular to see plants grow in their native habitats.