96 lines
2.6 KiB
Plaintext
96 lines
2.6 KiB
Plaintext
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#!/bin/sh
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set -e
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is_fs() {
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local fs_type
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fs_type="$(stat --file-system --format=%T "$2" 2> /dev/null)"
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if [ "$fs_type" = "$1" ]; then return 0; fi
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return 1
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}
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is_merged() {
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local directories="/bin /sbin /lib"
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for dir in $directories; do
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[ -e "$dir" ] || continue
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[ "$(readlink -f "$dir")" = "/usr$dir" ] || return 1
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done
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# Avoid an exact match, as the target might vary depending on the tool
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# building the image. For example, systemd-nspawn links /lib64 to
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# /usr/lib/aarch64-linux-gnu on arm64, while on amd64 debootstrap links it to
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# /usr/lib64 and doesn't create it at all on arm64.
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# See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1019575
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local arch_directories="/lib64 /lib32 /libo32 /libx32"
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for dir in $arch_directories; do
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[ -e "$dir" ] || continue
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case "$(readlink -f "$dir")" in
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"/usr/lib"*) ;;
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*) return 1;;
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esac
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done
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return 0
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}
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maybe_convert() {
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# do not try to run the program if the system has already been converted
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if is_merged; then return; fi
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if is_fs nfs / || is_fs nfs /usr; then
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cat << 'END' >&2
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Warning: NFS detected, /usr/lib/usrmerge/convert-usrmerge will not be run
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automatically. See #842145 for details.
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END
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return 1
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fi
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/usr/lib/usrmerge/convert-usrmerge || return $?
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if which update-shells > /dev/null; then
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update-shells
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fi
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/usr/lib/usrmerge/convert-etc-shells || return $?
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}
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cleanup_biarch_dirs() {
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dpkg --compare-versions "$2" lt "36~" || return 0
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# bootstrapping or earlier conversions may have created empty biarch
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# directories and links. glibc 2.35-4 or later will create them if needed,
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# so clean up the unused (and unowned) ones
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local arch_directories="/lib64 /lib32 /libo32 /libx32"
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for dir in $arch_directories; do
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[ -e "$dir" ] || continue
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if ! dpkg-query -S $dir >/dev/null 2>&1; then
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rm -v $dir
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if [ -e /usr$dir ] && ! dpkg-query -S /usr$dir >/dev/null 2>&1 ; then
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rmdir --ignore-fail-on-non-empty -v /usr$dir
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fi
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fi
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done
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}
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case "$1" in
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configure)
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# Skip the conversion for buildds.
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# Note that such systems will be *UNSUPPORTED* in the future.
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if [ -e /etc/unsupported-skip-usrmerge-conversion ] && \
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grep -q 'this system will not be supported in the future' \
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/etc/unsupported-skip-usrmerge-conversion; then
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echo "W: /etc/unsupported-skip-usrmerge-conversion exists." >&2
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else
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maybe_convert "$@" || { echo "E: usrmerge failed." >&2; exit 1; }
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cleanup_biarch_dirs
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fi
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;;
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esac
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# Automatically added by dh_installdeb/13.11.4
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dpkg-maintscript-helper rm_conffile /etc/dpkg/dpkg.cfg.d/usrmerge 19\~ usrmerge -- "$@"
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# End automatically added section
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