Subject: Re: Running git(1) from within hooks/post-update

From: Alejandro Colomar <[email-masked]>
Date: Fri, 24 Nov 2023 16:42:16 +0100

On Fri, Nov 24, 2023 at 03:00:22PM +0100, Alejandro Colomar wrote:
> Hi,
> 
> I'm trying to set up a post-update hook to produce a build of the Linux
> man-pages PDF book after every push to my personal server to the 'main'
> branch, so that I can serve man-pages-HEAD.pdf at some URL, for users to
> be able to easily check the manual at git HEAD without having to clone
> the repo.
> 
> I thought of having a git non-bare repo where I build it, so the script
> would be the following (the paths are tmp, because I'm still testing).
> 
> 	$ cat post-update 
> 	#!/bin/sh
> 
> 	test "$1" = "refs/heads/main" || exit 0;
> 
> 	cd ~/tmp/man-pages/;
> 
> 	whoami; pwd; ls -ld .git/;  # This is for debugging.
> 
> 	git fetch srv			#>/dev/null 2>&1;
> 	git reset srv/main --hard	#>/dev/null 2>&1;
> 	git clean -dffx			#>/dev/null 2>&1;
> 	scripts/LinuxManBook/build.sh	>~/tmp/LMB-HEAD.pdf &

The script works fine when called manually.  It seems it's calling it
as a hook that fails.  It seems it's running git(1) from within a
post-update hook that is problematic.  Is that expected, or is it a bug,
and can it be fixed?

> 
> But it's not working.  The git(1) calls are failing, saying it's not a
> git repo, but it clearly is, and I have permissions, so I don't
> understand what's going wrong.  Here's the 'remote:' output of a push to
> that testing server:
> 
> 	remote: alx
> 	remote: /home/alx/tmp/man-pages
> 	remote: drwxr-xr-x 8 alx alx 4096 Nov 24 14:41 .git/
> 	remote: fatal: not a git repository: '.'
> 	remote: fatal: not a git repository: '.'
> 	remote: fatal: not a git repository: '.'
> 	remote: hooks/post-update: 12: ./scripts/LinuxManBook/build.sh: not found
> 
> Can you please help?  :)
> 
> Thanks,
> Alex
> 
> -- 
> <https://www.alejandro-colomar.es/>

-- 
<https://www.alejandro-colomar.es/>