Bug#1006692: glibc: libc6 postinst: do not re-exec init if DPKG_ROOT is set

[Johannes Schauer Marin Rodrigues <josch@debian.org>]

Source: glibc
Version: 2.33-7
Severity: normal
Tags: patch
User: debian-dpkg@lists.debian.org
Usertags: dpkg-root-support
X-Debbugs-Cc: josch@debian.org

Hi,

when glibc is installed with $DPKG_ROOT set to a non-empty string, then
"systemctl daemon-reexec" or "telinit" should not be executed, similarly
to when the postinst is run inside a chroot. I filed a MR [1] and put
the patch at the end of this mail.

Thanks!

cheers, josch

[1] https://salsa.debian.org/glibc-team/glibc/-/merge_requests/5


--- a/debian/debhelper.in/libc.postinst
+++ b/debian/debhelper.in/libc.postinst
@@ -157,6 +157,9 @@ then
     if ischroot 2>/dev/null; then
         # Don't bother trying to re-exec init from a chroot:
         TELINIT=no
+    elif [ -n "${DPKG_ROOT:-}" ]; then
+        # Do not re-exec init if we are operating on a chroot from outside:
+        TELINIT=no
     elif [ -d /run/systemd/system ]; then
         # Restart systemd on upgrade, but carefully.
         # The restart is wanted because of LP: #1942276 and Bug: #993821