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

* What is =debuginfod=?
- Relatively young (@@latex:$\sim$@@2019) project started by Red Hat.
- 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 =.dbgsym= files (but it can do
  more than that).

* How does it work?
- There's a =debuginfod= server (e.g., at
  https://debuginfod.debian.net) that indexes all available debuginfo
  from several distributions (=unstable=, =testing=, =stable=,
  =experimental=, etc.)
#+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 =testing= / =unstable= / =bullseye= supports using
  =debuginfod= when searching for debuginfo.
- Unfortunately, it wasn't possible to include automatic support for
  our service on =bullseye=.
- But don't despair! This is all that the user will have to do:

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

* Demo
- Fasten your seat belts, please.

* Future plans
- Make it an official Debian service (ongoing task with the DSA).
- Index and serve debuginfo from https://snapshot.debian.org.
- Find co-maintainers (current bus factor: 1).

* More information
- https://wiki.debian.org/Debuginfod
- https://sourceware.org/elfutils/Debuginfod.html
- =sergiodj= @ =OFTC=
- @@latex:\href{mailto:sergiodj@debian.org}{sergiodj@debian.org}@@