#787437 apt-get fails to execute under fakeroot or proot

Package:
apt
Source:
apt
Description:
commandline package manager
Submitter:
Johannes Schauer
Date:
2025-04-26 13:21:01 UTC
Severity:
minor
#787437#5
Date:
2015-06-01 17:51:39 UTC
From:
To:
Hi,

apt-get fails to execute under fakeroot or proot:

$ proot -0 apt-get download 0ad
E: Method gave invalid 400 URI Failure message: Could not get new groups - getgroups (22: Invalid argument)

$ fakeroot apt-get download 0ad
E: Method gave invalid 400 URI Failure message: Could not get new groups - getgroups (22: Invalid argument)
problem should probably go away when setting APT::Sandbox::User to the
empty string. But neither supplying
#787437#10
Date:
2015-06-01 18:57:34 UTC
From:
To:
Hi,

Am 01.06.2015 19:54 schrieb "Johannes Schauer" <josch@debian.org>:
- getgroups (22: Invalid argument)
- getgroups (22: Invalid argument)

thanks for your bug report. This is a relatively new feature, and it seems
we did not test this.

A config value seems the safest.

But it does work with the file?

There is, but it dies not work without a value. You could try setting it to
root, I assume it works to setuid 0 under fakeroot. Although, if fakeroot
does not replace some of the group calls we use, it might not work either.
#787437#15
Date:
2015-06-01 19:24:48 UTC
From:
To:
Hi,

Quoting Julian Andres Klode (2015-06-01 20:57:34)

yes, with a config file it works so there doesn't seem to be another part of
apt other than DropPrivileges() in apt-pkg/contrib/fileutl.cc that has this
regression.

Thanks!

cheers, josch
#787437#20
Date:
2025-04-26 13:17:34 UTC
From:
To:
Hi!

Commit https://salsa.debian.org/apt-team/apt/-/commit/ebca2f25 affects
the behviour of apt under proot. However I don't know enough about proot
and about code changed in the commit. Therefore I don't know if commit
ebca2f25 is a proper fix for this ticket, and I can't close this ticket.

Ticket fixed by commit ebca2f25:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=806475



Successful reproduction in commit d5e7aa2a preceding the commit in
question (apt built from sources):

acerion@debian:~/ticket/pre_fix$ grep PRETTY_NAME /etc/os-release
PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
acerion@debian:~/ticket/pre_fix$ apt --version
apt 1.1.1 (amd64)
acerion@debian:~/ticket/pre_fix$ proot -0 apt-get download 0ad
E: Method gave invalid 400 URI Failure message: Could not switch group, user _apt is still in group 24
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (112)
acerion@debian:~/ticket/pre_fix$



Unsuccessful reproduction in commit ebca2f25 (apt built from sources):

acerion@debian:~/ticket/post_fix$ grep PRETTY_NAME /etc/os-release
PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
acerion@debian:~/ticket/post_fix$ apt --version
apt 1.1.1 (amd64)
acerion@debian:~/ticket/post_fix$ proot -0 apt-get download 0ad
Get:1 http://archive.debian.org/debian stretch/main amd64 0ad amd64 0.0.21-2 [5,230 kB]
Fetched 5,230 kB in 0s (8,460 kB/s)
acerion@debian:~/ticket/post_fix$



Kamil