This is an automated email from the git hooks/post-receive script. guillem pushed a commit to branch main in repository dpkg.
View the commit online: https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=57e084a52e1ede33b7914c3e0357311ac370a186 commit 57e084a52e1ede33b7914c3e0357311ac370a186 Author: Guillem Jover <guil...@debian.org> AuthorDate: Mon Feb 7 18:18:03 2022 +0100 debian: Warn in postinst about merged-/usr-via-aliased-dirs breakage dpkg does not, and has never supported this filesystem layout even less so the way it has been deployed as it bypasses dpkg entirely. It can cause file loss, file overwrites, unexpected query results, among other things, while being very insidious to detect if one is not aware. Adding support for it would be rather infeasible and gets in the way of features that have been on the works for some time now. --- debian/dpkg.postinst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/debian/dpkg.postinst b/debian/dpkg.postinst index efa879c20..f19ddaff1 100644 --- a/debian/dpkg.postinst +++ b/debian/dpkg.postinst @@ -3,10 +3,24 @@ set -e +PROGNAME=dpkg + . /usr/share/dpkg/sh/dpkg-error.sh setup_colors +check_merged_usr_via_aliased_dirs() +{ + for d in /bin /sbin /lib /lib32 /libo32 /libx32 /lib64; do + linkname="$(readlink $DPKG_ROOT$d || true)" + if [ "$linkname" = "usr$d" ] || [ "$linkname" = "/usr$d" ]; then + warning "System unsupported due to merged-usr-via-aliased-dirs." + warning "See <https://wiki.debian.org/Teams/Dpkg/FAQ#broken-usrmerge>." + break + fi + done +} + # Version 1.21.0 had bogus handling of DPKG_ADMINDIR in update-alternatives, # and misplaced them, fix them up. fixup_misplaced_alternatives() @@ -55,6 +69,8 @@ fixup_misplaced_alternatives() case "$1" in configure) fixup_misplaced_alternatives + + check_merged_usr_via_aliased_dirs ;; abort-upgrade|abort-deconfigure|abort-remove) ;; -- Dpkg.Org's dpkg
