Bug#1017590: marked as done (glibc 2.34 broke getpwnam calls under fakechroot)
Your message dated Thu, 25 Aug 2022 12:19:17 +0000
with message-id <E1oRBpN-00FIFZ-Aa@fasolo.debian.org>
and subject line Bug#1017590: fixed in fakechroot 2.20.1+ds-6
has caused the Debian Bug report #1017590,
regarding glibc 2.34 broke getpwnam calls under fakechroot
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1017590: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1017590
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
Source: glibc
Version: 2.34-1
Severity: normal
X-Debbugs-Cc: josch@debian.org
Control: affects -1 + fakechroot mmdebstrap
Hi,
ultimately this probably needs to be fixed in fakechroot but I need some
help solving this problem from somebody who understands glibc.
Since the upload of glibc 2.34, getpwnam (and friends) under fakechroot
are not wrapped anymore. This means that instead of accessing
/etc/passwd from the chroot, the version from the host will be accessed,
leading to incorrect behaviour.
Since mmdebstrap uses fakechroot, this problem affects mmdebstrap as
well and breaks its autopkgtest.
There was a similar problem in the past. See
https://bugs.debian.org/993946 which in the end was fixed by letting
fakechroot wrap __nss_files_fopen.
I bisected glibc from git between 2.33 and 2.34 and found out, that this
fix broke again in this commit:
https://sourceware.org/git/?p=glibc.git;a=commit;h=6212bb67f4695962748a5981e1b9fea105af74f6
Do you have any idea why this commit is responsible and what fakechroot
could do to fix it? Attached the script I used to setup a minimal chroot
to bisect glibc git (this is for future-me in case I need to do this
ever again in the future).
Thanks!
cheers, josch
#!/bin/sh
set -e
rm -rf /install ./*
/glibc/configure --prefix=/usr && make -j
wget -c http://snapshot.debian.org/archive/debian/20211216T150239Z/pool/main/f/fakechroot/fakechroot_2.20.1%2Bds-2_all.deb
wget -c http://snapshot.debian.org/archive/debian/20211216T150239Z/pool/main/f/fakechroot/libfakechroot_2.20.1%2Bds-2_amd64.deb
mkdir -p /install/bin /install/lib /install/lib64 /install/dev /install/usr/lib
ln -s ../lib/ld.so /install/lib64/ld-linux-x86-64.so.2
ln -s ../../lib64 /install/usr/lib/x86_64-linux-gnu
ln -s ../bin /install/usr/bin
cp /bin/dash /install/bin/sh
cp ./elf/ldconfig /install/bin/
cp /usr/bin/seq /usr/bin/env /bin/bash /usr/bin/tr /usr/bin/basename /usr/bin/getopt /usr/sbin/chroot /bin/echo /install/bin/
cp -a /lib/x86_64-linux-gnu/libtinfo.so.6.2 /install/lib64
ln -s libtinfo.so.6.2 /install/lib64/libtinfo.so.6
cp ./elf/ld.so /install/lib
find -name '*.so' -or -name '*.so.*' | xargs -I'{}' cp '{}' /install/lib64
dpkg-deb --fsys-tarfile fakechroot_2.20.1+ds-2_all.deb | tar -C /install --keep-directory-symlink -x
dpkg-deb --fsys-tarfile libfakechroot_2.20.1+ds-2_amd64.deb | tar -C /install --keep-directory-symlink -x
cp /fakechroot/test/src/test-nss_files_fopen /install/bin/
cp -a /install /chroot
mv /chroot /install/chroot
echo "user:x:1337:1337:user:/home/user:/bin/bash" > /install/chroot/etc/passwd
chroot /install fakechroot --lib /usr/lib/x86_64-linux-gnu/fakechroot/libfakechroot.so /bin/chroot /chroot /bin/test-nss_files_fopen user
--- End Message ---
--- Begin Message ---
Source: fakechroot
Source-Version: 2.20.1+ds-6
Done: Johannes Schauer Marin Rodrigues <josch@debian.org>
We believe that the bug you reported is fixed in the latest version of
fakechroot, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 1017590@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Johannes Schauer Marin Rodrigues <josch@debian.org> (supplier of updated fakechroot package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Thu, 25 Aug 2022 13:59:58 +0200
Source: fakechroot
Architecture: source
Version: 2.20.1+ds-6
Distribution: unstable
Urgency: medium
Maintainer: Johannes Schauer Marin Rodrigues <josch@debian.org>
Changed-By: Johannes Schauer Marin Rodrigues <josch@debian.org>
Closes: 1017590
Changes:
fakechroot (2.20.1+ds-6) unstable; urgency=medium
.
* mmdebstrap autopkgtest succeeds on salsa and debi, so getpwent and friends
work correctly again (closes: #1017590)
Checksums-Sha1:
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34df27a4f01683844c4166f1311a7b9ab368c092 18260 fakechroot_2.20.1+ds-6.debian.tar.xz
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c0889c88186687c6edc1f3eb8c24bb3feefeb076f6ab0d4564eacd5b71ed945e 18260 fakechroot_2.20.1+ds-6.debian.tar.xz
Files:
066120f5d262a114310dcbae1060427d 2224 utils optional fakechroot_2.20.1+ds-6.dsc
7d5036215e7ba434fdf4fc3bce9a49c8 18260 utils optional fakechroot_2.20.1+ds-6.debian.tar.xz
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--- End Message ---
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