Le samedi 12 juillet à 10h 39mn 01s (-0700), Jameson Graef Rollins a écrit : > On Fri, Jul 11 2014, jhcha54008 <jhcha54...@free.fr> wrote: > > As stated in http://cmrg.fifthhorseman.net/ticket/80 : in a debirf instance > > built with > > ROOT_BUILD=false, ldconfig and ldd are not the fully functional executables > > but the > > scripts which come with fakechroot. There is no /etc/ld.so.cache. > > > > As a result, softwares which rely on /etc/ld.so.cache (and paths in > > /etc/ld.so.conf.d/* > > files) to find their libraries may break when run in a debirf instance, > > e.g. fakechroot : in a booted debirf instance > > > > # dpkg -l fakechroot > > ||/ Name Version Architecture Description > > +++-===========-=========-=============-=========================================== > > ii fakechroot 2.17.2-1 all gives a fake chroot environment - > > utilities > > # FAKECHROOT_DETECT=1 fakechroot echo > > fakechroot: preload library not found, aborting. > > Just for clarification, the above error comes from running fakechroot on > a booted debirf instance?
Yes > > > diff -Naur a/usr/share/debirf/modules/z1_clean-root > > b/usr/share/debirf/modules/z1_clean-root > > --- a/usr/share/debirf/modules/z1_clean-root 2014-07-09 > > 22:28:14.000000000 +0200 > > +++ b/usr/share/debirf/modules/z1_clean-root 2014-07-09 > > 22:37:49.000000000 +0200 > > @@ -28,3 +28,16 @@ > > > > # setup dynamically updated /etc/mtab > > ln -sf /proc/mounts "$DEBIRF_ROOT/etc/mtab" > > + > > +# remove diversions added by debootstrap > > +# (debootstrap 1.0.60, function install_fakechroot_tools, > > +# file /usr/share/debootstrap/functions lines 1397-1582 ) > > +if [ "$ROOT_BUILD" = 'false' ]; then > > + debirf_exec dpkg-divert --remove /sbin/ldconfig > > + mv -f "$DEBIRF_ROOT/sbin/ldconfig.REAL" "$DEBIRF_ROOT/sbin/ldconfig" > > + debirf_exec dpkg-divert --remove /usr/bin/ldd > > + mv -f "$DEBIRF_ROOT/usr/bin/ldd.REAL" "$DEBIRF_ROOT/usr/bin/ldd" > > +fi > > + > > +# setup ld.so cache > > +/sbin/ldconfig -r "$DEBIRF_ROOT" > > I think it would good to have more comments around these snippets to > describe why all this is necessary. That's right. Here is a first try. How could we make this clear for the reader of the script in some months or years ? diff -Naur a/usr/share/debirf/modules/z1_clean-root b/usr/share/debirf/modules/z1_clean-root --- a/usr/share/debirf/modules/z1_clean-root 2014-07-09 22:28:14.000000000 +0200 +++ b/usr/share/debirf/modules/z1_clean-root 2014-07-14 17:12:20.000000000 +0200 @@ -28,3 +28,20 @@ # setup dynamically updated /etc/mtab ln -sf /proc/mounts "$DEBIRF_ROOT/etc/mtab" + +# ldconfig can't work in a fakechroot environment (see fakechroot(1)) +# So we use the build host ldconfig to setup ld.so cache +/sbin/ldconfig -r "$DEBIRF_ROOT" + +# debootstrap's variant 'fakechroot' replaced ldconfig with a dummy +# version, and ldd with a script devised for a fakechroot environment. +# At this point we restore the original ldconfig and ldd in the final +# debirf image, and remove diversions added by debootstrap +# (see debootstrap 1.0.60, function install_fakechroot_tools, +# file /usr/share/debootstrap/functions lines 1397-1582 ) +if [ "$ROOT_BUILD" = 'false' ]; then + debirf_exec dpkg-divert --remove /sbin/ldconfig + mv -f "$DEBIRF_ROOT/sbin/ldconfig.REAL" "$DEBIRF_ROOT/sbin/ldconfig" + debirf_exec dpkg-divert --remove /usr/bin/ldd + mv -f "$DEBIRF_ROOT/usr/bin/ldd.REAL" "$DEBIRF_ROOT/usr/bin/ldd" +fi > > jamie. Regards, JH Chatenet -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
