Re: etcupdate created empty files = system unbootable

From: Miroslav Lachman <000.fbsd_at_quip.cz>
Date: Sat, 29 Apr 2023 07:10:53 UTC 
On 29/04/2023 04:05, Tomoaki AOKI wrote:
> On Thu, 27 Apr 2023 11:21:06 +0200
> Miroslav Lachman <000.fbsd@quip.cz> wrote:

[..]

>> Question number 1: How etcupdate can go so horribly wrong to put empty
>> files in /etc/ and make system unbootable?
>>
>> Question number 2: What's the right way to fix this with etcupdate now?
>>
>> # etcupdate
>> Failed to build new tree.
>>
>> I don't know if I am alone but I definitely have more problems with
>> etcupdate in a few years of usage instead on mergemaster. I don't
>> remember so many errors, unhandled automatic updates or syntax errors in
>> important files with mergmeaster in about 15 years.
>>
>> Kind regards
>> Miroslav Lachman
> 
> Just a hint to Question number 2.
> 
> /usr/sbin/etcupdate is a sh script, not a binary file.
> And error message "Failed to build new tree." is at line 255
> (in function extract_tree()).
> 
> This is emitted when function build_tree() failed.
> It could happen on some situation, but maybe likely happen when
> working directory of etcupdate (/var/db/etcupdate by default)
> is out of space, or missingly ran etcupdate with non-root user.

"Failed to build new tree." was my error - /usr/src and /usr/obj was not 
mounted after partial rescue boot. [1]
But even if src and obj was mounted and etcupdate does not complain 
anymore I was not able to fix files in /etc/ by etcupdate. So the 
question remains - is it even possible to fix broken /etc/ with etcupdate?
I tried it with clean /var/db/etcupdate too but without success. Only 
mergemaster fixed it.


[1] printed error message is not useful at all but log file has the hint:
# cat /var/db/etcupdate/log
 >>> update command: rerun= tarball= preworld=
 >>> Building tree at /var/db/etcupdate/etcupdate-2IsVQLL with make 
-DNO_FILEMON
make: don''t know how to make distrib-dirs. Stop

make: stopped in /usr/src


Kind regards
Miroslav Lachman