From 56cd5768b32fd97a7156977dcbbd40715e158e9c Mon Sep 17 00:00:00 2001
From: Sam Hartman <hartmans@debian.org>
Date: Tue, 6 Feb 2024 09:28:03 -0700
Subject: Mitigate /usr-move file loss. (Closes: #1062802)

---
 debian/changelog             |  7 +++++++
 debian/clean                 |  2 ++
 debian/libpam0t64.postrm.in  | 13 +++++++++++++
 debian/libpam0t64.preinst.in | 13 +++++++++++++
 debian/rules                 |  5 +++++
 5 files changed, 40 insertions(+)
 create mode 100644 debian/libpam0t64.postrm.in
 create mode 100644 debian/libpam0t64.preinst.in

diff --git a/debian/changelog b/debian/changelog
index 7adcb914..bce0df4f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+pam (1.5.3-3) experimental; urgency=medium
+
+  [ Helmut Grohne ]
+  * Mitigate /usr-move file loss. (Closes: #1062802)
+
+ -- Helmut Grohne <helmut@subdivi.de>  Sat, 03 Feb 2024 12:18:52 +0100
+
 pam (1.5.3-2) experimental; urgency=medium
 
   * Rename libpam0g to libpamt64 for time_t transition
diff --git a/debian/clean b/debian/clean
index 62f09e76..bd751b64 100644
--- a/debian/clean
+++ b/debian/clean
@@ -1 +1,3 @@
 debian/local/pam_getenv.8
+debian/libpam0t64.preinst
+debian/libpam0t64.postrm
diff --git a/debian/libpam0t64.postrm.in b/debian/libpam0t64.postrm.in
new file mode 100644
index 00000000..90720b6d
--- /dev/null
+++ b/debian/libpam0t64.postrm.in
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -e
+
+if [ "$1" = remove ]; then
+	for file in libpam.so.0 libpam.so.0.85.1 libpam_misc.so.0 libpam_misc.so.0.82.1 libpamc.so.0 libpamc.so.0.82.1; do
+		dpkg-divert --package libpam0t64 --no-rename --remove --divert "/lib/#DEB_HOST_MULTIARCH#/$file.usr-is-merged" "/lib/#DEB_HOST_MULTIARCH#/$file"
+	done
+fi
+
+#DEBHELPER#
+
+exit 0
diff --git a/debian/libpam0t64.preinst.in b/debian/libpam0t64.preinst.in
new file mode 100644
index 00000000..85cffd2f
--- /dev/null
+++ b/debian/libpam0t64.preinst.in
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -e
+
+if [ "$1" = install ]; then
+	for file in libpam.so.0 libpam.so.0.85.1 libpam_misc.so.0 libpam_misc.so.0.82.1 libpamc.so.0 libpamc.so.0.82.1; do
+		dpkg-divert --package libpam0t64 --no-rename --add --divert "/lib/#DEB_HOST_MULTIARCH#/$file.usr-is-merged" "/lib/#DEB_HOST_MULTIARCH#/$file"
+	done
+fi
+
+#DEBHELPER#
+
+exit 0
diff --git a/debian/rules b/debian/rules
index 9e2562b9..c636ff47 100755
--- a/debian/rules
+++ b/debian/rules
@@ -76,3 +76,8 @@ endif
 
 override_dh_installchangelogs:
 	dh_installchangelogs NEWS
+
+debian/%:debian/%.in
+	sed -e 's/#DEB_HOST_MULTIARCH#/$(DEB_HOST_MULTIARCH)/g' $< > $@
+
+execute_before_dh_installdeb:debian/libpam0t64.preinst debian/libpam0t64.postrm
-- 
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