Bug#806936: /usr/share/debootstrap/functions: use tar -h in extract_dpkg_deb_data

[Yves-Alexis Perez <corsac@debian.org>]

Package: debootstrap
Version: 1.0.75
Severity: normal
File: /usr/share/debootstrap/functions

Hi,

dpkg behavior is to preserve as hard as it can the current layout of the
filesystem wrt. symlink to directories: it will try not to replace a
symlink by a folder or even the opposite.

In debootstrap early stages, dpkg is not used (because not yet installed
in the target), but a custom implementatin using dpkg-deb|tar or ar is
used. Unfortunately, this implementation doesn't follow dpkg behavior,
and will happily replace a symlink by a dir.

I'm using debootstrap in a custom way where I need to create some
symlinks beforehand (for example some multiarches dirs like lib -> lib64
in / and /usr), it works fine with dpkg, but not with debootstrap early
extract.

Would it be possible to replace the tar call in extract_dpkg_deb_data
with tar -hxf so it will follow symlinks instead of replacing them?

Regards,
-- 
Yves-Alexis


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 'oldstable'), (450, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages debootstrap depends on:
ii  wget  1.17-1

Versions of packages debootstrap recommends:
ii  debian-archive-keyring  2014.3
ii  gnupg                   1.4.19-6

debootstrap suggests no packages.

-- no debconf information