a cosmological pedestrian
At the beginning of February I attended devconf.cz in Brno and the days before I had a hack week with Jakub Hrozek on cmocka. cmocka is a unit testing framework for C with support for mock objects. We already rewrote the test runner last year and it was time to finish it and add support for several different message output formats. You are able to...
Development / Linux / RedHat / Samba
Today I’ve released a new version of uid_wrapper (1.1.0) with full threading support. Robin Hack a colleague of mine spent a lot of time improving the code and writing tests for it. It now survives funny things like forking in a thread. We also added two missing functions and fixed several bugs. uid_wrapper is a tool to help you writing tests for your application. If...
Development / KDE / Linux / Samba
I’ve released a new preloadable wrapper named resolv_wrapper which can be used for nameserver redirection or DNS response faking. It can be used in testing environment to route DNS queries to a real nameserver separate from resolv.conf or fake one with simple config file. We tested it on Linux, FreeBSD and Solaris. It should work on other UNIX flavors too. You can download resolv_wrapper here.
Development / KDE / Linux / Samba
Next week is the LinuxCon Europe in Düsseldorf, Germany. I will be there and give a talk about cwrap, a set of tools to make client/server testing easy on a single machine. Testing network applications correctly is hard. This talk will demonstrate how to create a fully isolated network environment for client and server testing on a single host, complete with synthetic account information, hostname...
Development / KDE / Linux / Samba
As you might know I’m working (hacking) on Samba. Samba has a DNS implementation to easier integrate all the AD features. The problem is we would like to talk to the DNS server but /etc/resolv.conf points to a nameserver so your machine is correctly working in your network environment. For this Samba in our dns resolver library we implemented a way to setup a dns_hosts_file...
Development / KDE / Linux / Samba
by Jakub Hrozek and Andreas Schneider The LD_PRELOAD trick! Preloading is a feature of the dynamic linker (ld). It is a available on most Unix system and allows to load a user specified, shared library before all other shared libraries which are linked to an executable. Library pre-loading is most commonly used when you need a custom version of a library function to be called....
Development / KDE / Linux / Samba
Maybe you already heard of the cwrap project. A set of tools to create a fully isolated network environment to test client/server components on a single host. socket_wrapper is a part of cwrap and I released version 1.1.0 today. In this release I worked together with Michael Adam and we implemented some nice new features like support for IP_PKTINFO for binding on UDP sockets, bindresvport()...
Development / KDE / Linux / RedHat / Samba
Together with Jakub Hrozek I wrote an article about cwrap which is a set of tools to test your full software stack on a single machine. The article is open to the public now. Read the article …
Last Friday I’ve released cmocka 0.4.0. It has several bugfixes and at least two new features. One is support for groups. This means you can define a setup and teardown function for a group of unit tests. I think some people have been waiting for this. You can find an example here. It is simple and easy to use. The other small feature is a...
After the Update to Fedora 20 I forgot to update the linker to Gold. Today I released that linking Samba is horribly slow. Time to change the linker to Gold again: Fedora: ll /etc/alternatives/ld /usr/sbin/alternatives –set ld /usr/bin/ld.gold openSUSE: ll /etc/alternatives/ld /usr/sbin/update-alternatives –set ld /usr/bin/ld.gold To still build a special project with ld.bfd use: LDFLAGS=”-fuse-ld=bfd”