#+OPTIONS: toc:nil date:nil ':t
#+TITLE: Debuginfod on Ubuntu
#+Author: Sergio Durigan Junior @@latex:\\@@ sergiodj@ubuntu.com
#+LANGUAGE: en
#+BEAMER_THEME: Rochester
#+LaTeX_HEADER: \hypersetup{colorlinks=true,urlcolor=blue}
#+LaTeX_HEADER: \lstset{basicstyle=\footnotesize\ttfamily}

* What is =debuginfod=?
- Started by Red Hat in 2019.
- It @@latex:\emph{@@"is a client/server [...] that automatically
  distributes =ELF= / =DWARF= / source-code from servers to clients
  such as debuggers across HTTP"@@latex:}@@.
- The goal is to replace the need for =.ddeb= files (but it can do
  more than that).

* How does it work?
- There's a =debuginfod= server (e.g., at
  https://debuginfod.ubuntu.com) that indexes all available debug
  information from supported Ubuntu releases.
#+BEAMER: \pause
- Debugger-like tools (e.g., =GDB=) link against =libdebuginfod=,
  which provides the client support.
#+BEAMER: \pause
- When the tool needs a certain debuginfo, it will contact the
  =debuginfod= server (specified via the =DEBUGINFOD_URLS= shell
  variable) and put a request for the debuginfo's =Build-ID=.
#+BEAMER: \pause
- If found, the server will then transmit the information over HTTP(S)
  to the client.

* How do I use it?
:PROPERTIES:
:BEAMER_OPT: fragile
:END:
- =GDB= on Jammy and Kinetic support using =debuginfod= to fetch debug
  information.
- From Kinetic onward, there is no need for manual intervention: the
  system will automatically use Ubuntu's =debuginfod= service.
- On Jammy, you can configure your system to use the service by doing:

#+ATTR_LATEX: :options frame=single
#+begin_src bash
export DEBUGINFOD_URLS="https://debuginfod.ubuntu.com"
#+end_src

* Demo
- Fasten your seat belts, please.

* Future plans
- Work on source code indexing (more demo!).
- Index debug information from other producers (snaps, special PPAs).
- Provide =debuginfod=-capable =GDBs= via =-backports= to previous
  supported Ubuntu releases.

* More information
- https://ubuntu.com/server/docs/service-debuginfod
- https://sourceware.org/elfutils/Debuginfod.html
- =sergiodj= @ =libera.chat=
- @@latex:\href{mailto:sergiodj@ubuntu.com}{sergiodj@ubuntu.com}@@