[pacman-dev] Fwd: What is passed to a hook's Action?

[Andrew Gregory]

On 04/29/16 at 03:46pm, Eric Schultz wrote:
> I've looked at the docs for alpm-hooks. I even tried looking at the code
> but I'm not a C programmer so a lot didn't make sense to me.
> 
> What I'm wondering is what gets passed to the command in Exec of a hook?
> And how is it passed? Are there variables we can put on the command line to
> be passed as parameters? Does everything come through stdin? Or nothing at
> all?
> 
> Looking at andrewgregory's pachooks github repository, info-install.hook in
> particular, I get the impression things are passed via stdin. But I'm
> looking for some official docs or word from the developers to go on.


alpm-hooks(5) says explicitly how targets are passed to hooks:

 NeedsTargets
     Causes the list of matched trigger targets to be passed to the
     running hook on stdin.

If you don't use NeedsTargets, nothing gets passed to the hook.

apg